An issue was discovered in drivers/firmware/efi/efi.c in the Linux kernel before 5.4. Incorrect access permissions for the efivar_ssdt ACPI variable could be used by attackers to bypass lockdown or secure boot restrictions, aka CID-1957a85b0032.

The SUSE Linux Enterprise 15 SP1 RT kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2020-10135: Legacy pairing and secure-connections pairing authentication in Bluetooth BR/EDR Core Specification v5.2 and earlier may have allowed an unauthenticated user to complete authentication without pairing credentials via adjacent access. An unauthenticated, adjacent attacker could impersonate a Bluetooth BR/EDR master or slave to pair with a previously paired remote device to successfully complete the authentication procedure without knowing the link key (bnc#1171988).

CVE-2020-0305: In cdev_get of char_dev.c, there is a possible use-after-free due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1174462).

CVE-2019-20908: An issue was discovered in drivers/firmware/efi/efi.c where incorrect access permissions for the efivar_ssdt ACPI variable could be used by attackers to bypass lockdown or secure boot restrictions, aka CID-1957a85b0032 (bnc#1173567).

CVE-2020-10781: zram sysfs resource consumption was fixed (bnc#1173074).

CVE-2020-15780: An issue was discovered in drivers/acpi/acpi_configfs.c where injection of malicious ACPI tables via configfs could be used by attackers to bypass lockdown and secure boot restrictions, aka CID-75b0cea7bf30 (bnc#1173573).

CVE-2020-15393: usbtest_disconnect in drivers/usb/misc/usbtest.c had a memory leak, aka CID-28ebeb8db770 (bnc#1173514).

CVE-2020-12771: btree_gc_coalesce in drivers/md/bcache/btree.c had a deadlock if a coalescing operation fails (bnc#1171732).

CVE-2020-12888: The VFIO PCI driver mishandled attempts to access disabled memory space (bnc#1171868).

CVE-2020-10769: A buffer over-read flaw was found in crypto_authenc_extractkeys in crypto/authenc.c in the IPsec Cryptographic algorithm's module, authenc. When a payload longer than 4 bytes, and is not following 4-byte alignment boundary guidelines, it causes a buffer over-read threat, leading to a system crash. This flaw allowed a local attacker with user privileges to cause a denial of service (bnc#1173265).

CVE-2020-10773: A kernel stack information leak on s390/s390x was fixed (bnc#1172999).

CVE-2020-14416: A race condition in tty->disc_data handling in the slip and slcan line discipline could lead to a use-after-free, aka CID-0ace17d56824. This affects drivers/net/slip/slip.c and drivers/net/can/slcan.c (bnc#1162002).

CVE-2020-10766: Fixed an issue which allowed an attacker with a local account to disable SSBD protection (bnc#1172781).

CVE-2020-10767: Fixed an issue where Indirect Branch Prediction Barrier was disabled in certain circumstances, leaving the system open to a spectre v2 style attack (bnc#1172782).

CVE-2020-10768: Fixed an issue with the prctl() function, where indirect branch speculation could be enabled even though it was diabled before (bnc#1172783).

CVE-2020-13974: Fixed a integer overflow in drivers/tty/vt/keyboard.c, if k_ascii is called several times in a row (bnc#1172775).

CVE-2020-0543: Fixed a side channel attack against special registers which could have resulted in leaking of read values to cores other than the one which called it. This attack is known as Special Register Buffer Data Sampling (SRBDS) or 'CrossTalk' (bsc#1154824).

CVE-2020-13143: Fixed an out-of-bounds read in gadget_dev_desc_UDC_store in drivers/usb/gadget/configfs.c (bsc#1171982).

CVE-2020-12769: Fixed an issue which could have allowed attackers to cause a panic via concurrent calls to dw_spi_irq and dw_spi_transfer_one (bsc#1171983).

CVE-2020-12659: Fixed an out-of-bounds write (by a user with the CAP_NET_ADMIN capability) due to improper headroom validation (bsc#1171214).

CVE-2020-12657: An a use-after-free in block/bfq-iosched.c (bsc#1171205).

CVE-2020-12656: Fixed an improper handling of certain domain_release calls leadingch could have led to a memory leak (bsc#1171219).

CVE-2020-12655: Fixed an issue which could have allowed attackers to trigger a sync of excessive duration via an XFS v5 image with crafted metadata (bsc#1171217).

CVE-2020-12654: Fixed an issue in he wifi driver which could have allowed a remote AP to trigger a heap-based buffer overflow (bsc#1171202).

CVE-2020-12653: Fixed an issue in the wifi driver which could have allowed local users to gain privileges or cause a denial of service (bsc#1171195).

CVE-2020-12652: Fixed an issue which could have allowed local users to hold an incorrect lock during the ioctl operation and trigger a race condition (bsc#1171218).

CVE-2020-12464: Fixed a use-after-free due to a transfer without a reference (bsc#1170901).

CVE-2020-12114: Fixed a pivot_root race condition which could have allowed local users to cause a denial of service (panic) by corrupting a mountpoint reference counter (bsc#1171098).

CVE-2020-11669: Fixed an issue where arch/powerpc/kernel/idle_book3s.S did not have save/restore functionality for PNV_POWERSAVE_AMR, PNV_POWERSAVE_UAMOR, and PNV_POWERSAVE_AMOR (bnc#1169390).

CVE-2020-10757: Fixed an issue where remaping hugepage DAX to anon mmap could have caused user PTE access (bsc#1172317).

CVE-2020-10751: Fixed an improper implementation in SELinux LSM hook where it was assumed that an skb would only contain a single netlink message (bsc#1171189).

CVE-2020-10732: Fixed kernel data leak in userspace coredumps due to uninitialized data (bsc#1171220).

CVE-2020-10720: Fixed a use-after-free read in napi_gro_frags() (bsc#1170778).

CVE-2020-10711: Fixed a NULL pointer dereference in SELinux subsystem which could have allowed a remote network user to crash the kernel resulting in a denial of service (bsc#1171191).

CVE-2020-10690: Fixed the race between the release of ptp_clock and cdev (bsc#1170056).

CVE-2019-9455: Fixed a pointer leak due to a WARN_ON statement in a video driver. This could lead to local information disclosure with System execution privileges needed (bsc#1170345).

CVE-2019-20812: Fixed an issue in prb_calc_retire_blk_tmo() which could have resulted in a denial of service (bsc#1172453).

CVE-2019-20806: Fixed a NULL pointer dereference which may had lead to denial of service (bsc#1172199).

CVE-2019-19462: Fixed an issue which could have allowed local user to cause denial of service (bsc#1158265).

CVE-2019-20810: go7007_snd_init in drivers/media/usb/go7007/snd-go7007.c did not call snd_card_free for a failure path, which caused a memory leak, aka CID-9453264ef586 (bnc#1172458).

CVE-2018-1000199: Fixed a potential local code execution via ptrace (bsc#1089895).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-5804 advisory.

  - The VFIO PCI driver in the Linux kernel through 5.6.13 mishandles attempts to access disabled memory     space. (CVE-2020-12888)

  - A flaw was found in the Linux Kernel before 5.8-rc1 in the prctl() function, where it can be used to     enable indirect branch speculation after it has been disabled. This call incorrectly reports it as being     'force disabled' when it is not and opens the system to Spectre v2 attacks. The highest threat from this     vulnerability is to confidentiality. (CVE-2020-10768)

  - An issue was discovered in drivers/firmware/efi/efi.c in the Linux kernel before 5.4. Incorrect access     permissions for the efivar_ssdt ACPI variable could be used by attackers to bypass lockdown or secure boot     restrictions, aka CID-1957a85b0032. (CVE-2019-20908)

  - A memory leak in the crypto_report() function in crypto/crypto_user_base.c in the Linux kernel through     5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering     crypto_report_alg() failures, aka CID-ffdde5932042. (CVE-2019-19062)

  - A flaw was found in the Linux kernel's implementation of Userspace core dumps. This flaw allows an     attacker with a local account to crash a trivial program and exfiltrate private kernel data.
    (CVE-2020-10732)

  - drivers/net/wireless/marvell/libertas/if_sdio.c in the Linux kernel 5.2.14 does not check the     alloc_workqueue return value, leading to a NULL pointer dereference. (CVE-2019-16232)

  - drivers/net/wireless/intel/iwlwifi/pcie/trans.c in the Linux kernel 5.2.14 does not check the     alloc_workqueue return value, leading to a NULL pointer dereference. (CVE-2019-16234)

  - ** DISPUTED ** A memory leak in the unittest_data_add() function in drivers/of/unittest.c in the Linux     kernel before 5.3.10 allows attackers to cause a denial of service (memory consumption) by triggering     of_fdt_unflatten_tree() failures, aka CID-e13de8fe0d6a. NOTE: third parties dispute the relevance of this     because unittest.c can only be reached during boot. (CVE-2019-19049)

  - In the Linux kernel 5.0.21, mounting a crafted ext4 filesystem image, performing some operations, and     unmounting can lead to a use-after-free in ext4_put_super in fs/ext4/super.c, related to dump_orphan_list     in fs/ext4/super.c. (CVE-2019-19447)

  - ext4_empty_dir in fs/ext4/namei.c in the Linux kernel through 5.3.12 allows a NULL pointer dereference     because ext4_read_dirblock(inode,0,DIRENT_HTREE) can be zero. (CVE-2019-19037)

  - An issue was discovered in the Linux kernel before 5.0.6. In rx_queue_add_kobject() and     netdev_queue_add_kobject() in net/core/net-sysfs.c, a reference count is mishandled, aka CID-a3e23f719f5c.
    (CVE-2019-20811)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The SUSE Linux Enterprise 12 SP5 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2020-14331: A buffer over write in vgacon_scroll was fixed (bnc#1174205).

CVE-2020-10135: Legacy pairing and secure-connections pairing authentication in Bluetooth BR/EDR Core Specification v5.2 and earlier may have allowed an unauthenticated user to complete authentication without pairing credentials via adjacent access. An unauthenticated, adjacent attacker could impersonate a Bluetooth BR/EDR master or slave to pair with a previously paired remote device to successfully complete the authentication procedure without knowing the link key (bnc#1171988).

CVE-2020-0305: In cdev_get of char_dev.c, there is a possible use-after-free due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1174462).

CVE-2019-20908: An issue was discovered in drivers/firmware/efi/efi.c where incorrect access permissions for the efivar_ssdt ACPI variable could be used by attackers to bypass lockdown or secure boot restrictions, aka CID-1957a85b0032 (bnc#1173567).

CVE-2020-10781: zram sysfs resource consumption was fixed (bnc#1173074).

CVE-2020-15780: An issue was discovered in drivers/acpi/acpi_configfs.c where injection of malicious ACPI tables via configfs could be used by attackers to bypass lockdown and secure boot restrictions, aka CID-75b0cea7bf30 (bnc#1173573).

CVE-2020-15393: usbtest_disconnect in drivers/usb/misc/usbtest.c had a memory leak, aka CID-28ebeb8db770 (bnc#1173514).

CVE-2020-12771: btree_gc_coalesce in drivers/md/bcache/btree.c had a deadlock if a coalescing operation fails (bnc#1171732).

CVE-2019-16746: net/wireless/nl80211.c did not check the length of variable elements in a beacon head, leading to a buffer overflow (bnc#1152107).

CVE-2020-12888: The VFIO PCI driver mishandled attempts to access disabled memory space (bnc#1171868).

CVE-2020-10769: A buffer over-read flaw was found in crypto_authenc_extractkeys in crypto/authenc.c in the IPsec Cryptographic algorithm's module, authenc. When a payload longer than 4 bytes, and is not following 4-byte alignment boundary guidelines, it causes a buffer over-read threat, leading to a system crash. This flaw allowed a local attacker with user privileges to cause a denial of service (bnc#1173265).

CVE-2020-10773: A kernel stack information leak on s390/s390x was fixed (bnc#1172999).

CVE-2020-14416: A race condition in tty->disc_data handling in the slip and slcan line discipline could lead to a use-after-free, aka CID-0ace17d56824. This affects drivers/net/slip/slip.c and drivers/net/can/slcan.c (bnc#1162002).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The SUSE Linux Enterprise 12 SP4 LTSS kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2020-0305: In cdev_get of char_dev.c, there is a possible use-after-free due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1174462).

CVE-2019-20908: An issue was discovered in drivers/firmware/efi/efi.c where incorrect access permissions for the efivar_ssdt ACPI variable could be used by attackers to bypass lockdown or secure boot restrictions, aka CID-1957a85b0032 (bnc#1173567).

CVE-2020-15780: An issue was discovered in drivers/acpi/acpi_configfs.c where injection of malicious ACPI tables via configfs could be used by attackers to bypass lockdown and secure boot restrictions, aka CID-75b0cea7bf30 (bnc#1173573).

CVE-2020-15393: usbtest_disconnect in drivers/usb/misc/usbtest.c has a memory leak, aka CID-28ebeb8db770 (bnc#1173514).

CVE-2020-12771: btree_gc_coalesce in drivers/md/bcache/btree.c had a deadlock if a coalescing operation fails (bnc#1171732).

CVE-2019-16746: net/wireless/nl80211.c did not check the length of variable elements in a beacon head, leading to a buffer overflow (bnc#1152107).

CVE-2020-12888: The VFIO PCI driver mishandled attempts to access disabled memory space (bnc#1171868).

CVE-2020-10769: A buffer over-read flaw was found in crypto_authenc_extractkeys in crypto/authenc.c in the IPsec Cryptographic algorithm's module, authenc. When a payload longer than 4 bytes, and is not following 4-byte alignment boundary guidelines, it causes a buffer over-read threat, leading to a system crash. This flaw allowed a local attacker with user privileges to cause a denial of service (bnc#1173265).

CVE-2020-10773: A kernel stack information leak on s390/s390x was fixed (bnc#1172999).

CVE-2020-14416: A race condition in tty->disc_data handling in the slip and slcan line discipline could lead to a use-after-free, aka CID-0ace17d56824. This affects drivers/net/slip/slip.c and drivers/net/can/slcan.c (bnc#1162002).

CVE-2020-10768: Indirect branch speculation could have been enabled after it was force-disabled by the PR_SPEC_FORCE_DISABLE prctl command. (bnc#1172783).

CVE-2020-10766: Fixed Rogue cross-process SSBD shutdown, where a Linux scheduler logical bug allows an attacker to turn off the SSBD protection. (bnc#1172781).

CVE-2020-10767: Indirect Branch Prediction Barrier was force-disabled when STIBP is unavailable or enhanced IBRS is available.
(bnc#1172782).

CVE-2020-13974: drivers/tty/vt/keyboard.c had an integer overflow if k_ascii is called several times in a row, aka CID-b86dab054059.
(bnc#1172775).

CVE-2019-20810: go7007_snd_init in drivers/media/usb/go7007/snd-go7007.c in the Linux kernel did not call snd_card_free for a failure path, which causes a memory leak, aka CID-9453264ef586 (bnc#1172458).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The SUSE Linux Enterprise 12 SP5 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2020-15780: A lockdown bypass for loading unsigned modules using ACPI table injection was fixed. (bsc#1173573)

CVE-2020-15393: Fixed a memory leak in usbtest_disconnect (bnc#1173514).

CVE-2020-12771: An issue was discovered in btree_gc_coalesce in drivers/md/bcache/btree.c has a deadlock if a coalescing operation fails (bnc#1171732).

CVE-2020-12888: The VFIO PCI driver mishandled attempts to access disabled memory space (bnc#1171868).

CVE-2020-10773: Fixed a memory leak on s390/s390x, in the cmm_timeout_hander in file arch/s390/mm/cmm.c (bnc#1172999).

CVE-2020-14416: Fixed a race condition in tty->disc_data handling in the slip and slcan line discipline could lead to a use-after-free.
This affects drivers/net/slip/slip.c and drivers/net/can/slcan.c (bnc#1162002).

CVE-2020-0305: Fixed a possible use-after-free due to a race condition incdev_get of char_dev.c. This could lead to local escalation of privilege. User interaction is not needed for exploitation (bnc#1174462).

CVE-2020-10769: A buffer over-read flaw was found in crypto_authenc_extractkeys in crypto/authenc.c in the IPsec Cryptographic algorithm's module, authenc. This flaw allowed a local attacker with user privileges to cause a denial of service (bnc#1173265).

CVE-2020-10781: Fixed a denial of service issue in the ZRAM implementation (bnc#1173074).

CVE-2019-20908: Fixed incorrect access permissions for the efivar_ssdt ACPI variable, which could be used by attackers to bypass lockdown or secure boot restrictions (bnc#1173567).

CVE-2019-16746: Fixed a buffer overflow in net/wireless/nl80211.c, related to invalid length checks for variable elements in a beacon head (bnc#1152107).

CVE-2020-10135: Legacy pairing and secure-connections pairing authentication in Bluetooth may have allowed an unauthenticated user to complete authentication without pairing credentials via adjacent access. An unauthenticated, adjacent attacker could impersonate a Bluetooth BR/EDR master or slave to pair with a previously paired remote device to successfully complete the authentication procedure without knowing the link key (bnc#1171988).

CVE-2020-14331: Fixed a buffer over write in vgacon_scrollback_update() (bnc#1174205).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The SUSE Linux Enterprise 15 SP1 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2020-15780: A lockdown bypass for loading unsigned modules using ACPI table injection was fixed. (bsc#1173573)

CVE-2020-15393: Fixed a memory leak in usbtest_disconnect (bnc#1173514).

CVE-2020-12771: An issue was discovered in btree_gc_coalesce in drivers/md/bcache/btree.c has a deadlock if a coalescing operation fails (bnc#1171732).

CVE-2020-12888: The VFIO PCI driver mishandled attempts to access disabled memory space (bnc#1171868).

CVE-2020-10773: Fixed a memory leak on s390/s390x, in the cmm_timeout_hander in file arch/s390/mm/cmm.c (bnc#1172999).

CVE-2020-14416: Fixed a race condition in tty->disc_data handling in the slip and slcan line discipline could lead to a use-after-free.
This affects drivers/net/slip/slip.c and drivers/net/can/slcan.c (bnc#1162002).

CVE-2020-10768: Fixed an issue with the prctl() function, where indirect branch speculation could be enabled even though it was diabled before (bnc#1172783).

CVE-2020-10766: Fixed an issue which allowed an attacker with a local account to disable SSBD protection (bnc#1172781).

CVE-2020-10767: Fixed an issue where Indirect Branch Prediction Barrier was disabled in certain circumstances, leaving the system open to a spectre v2 style attack (bnc#1172782).

CVE-2020-13974: Fixed a integer overflow in drivers/tty/vt/keyboard.c, if k_ascii is called several times in a row (bnc#1172775).

CVE-2020-0305: Fixed a possible use-after-free due to a race condition incdev_get of char_dev.c. This could lead to local escalation of privilege. User interaction is not needed for exploitation (bnc#1174462).

CVE-2020-10769: A buffer over-read flaw was found in crypto_authenc_extractkeys in crypto/authenc.c in the IPsec Cryptographic algorithm's module, authenc. This flaw allowed a local attacker with user privileges to cause a denial of service (bnc#1173265).

CVE-2020-10781: Fixed a denial of service issue in the ZRAM implementation (bnc#1173074).

CVE-2019-20908: Fixed incorrect access permissions for the efivar_ssdt ACPI variable, which could be used by attackers to bypass lockdown or secure boot restrictions (bnc#1173567).

CVE-2019-20810: Fixed a memory leak in go7007_snd_init in drivers/media/usb/go7007/snd-go7007.c because it did not call snd_card_free for a failure path (bnc#1172458).

CVE-2019-16746: Fixed a buffer overflow in net/wireless/nl80211.c, related to invalid length checks for variable elements in a beacon head (bnc#1152107).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The SUSE Linux Enterprise 15 GA LTSS kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2020-0305: In cdev_get of char_dev.c, there is a possible use-after-free due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1174462).

CVE-2019-20908: An issue was discovered in drivers/firmware/efi/efi.c where incorrect access permissions for the efivar_ssdt ACPI variable could be used by attackers to bypass lockdown or secure boot restrictions, aka CID-1957a85b0032 (bnc#1173567).

CVE-2020-15780: An issue was discovered in drivers/acpi/acpi_configfs.c where injection of malicious ACPI tables via configfs could be used by attackers to bypass lockdown and secure boot restrictions, aka CID-75b0cea7bf30 (bnc#1173573).

CVE-2020-15393: usbtest_disconnect in drivers/usb/misc/usbtest.c had a memory leak, aka CID-28ebeb8db770 (bnc#1173514).

CVE-2020-12771: btree_gc_coalesce in drivers/md/bcache/btree.c has a deadlock if a coalescing operation fails (bnc#1171732).

CVE-2019-16746: An issue was discovered in net/wireless/nl80211.c which did not check the length of variable elements in a beacon head, leading to a buffer overflow (bnc#1152107 1173659).

CVE-2020-12888: The VFIO PCI driver mishandled attempts to access disabled memory space (bnc#1171868).

CVE-2020-10769: A buffer over-read flaw was found in crypto_authenc_extractkeys in crypto/authenc.c in the IPsec Cryptographic algorithm's module, authenc. When a payload longer than 4 bytes, and is not following 4-byte alignment boundary guidelines, it causes a buffer over-read threat, leading to a system crash. This flaw allowed a local attacker with user privileges to cause a denial of service (bnc#1173265).

CVE-2020-10773: A kernel stack information leak on s390/s390x was fixed (bnc#1172999).

CVE-2020-14416: A race condition in tty->disc_data handling in the slip and slcan line discipline could lead to a use-after-free, aka CID-0ace17d56824. This affects drivers/net/slip/slip.c and drivers/net/can/slcan.c (bnc#1162002).

CVE-2020-10768: Indirect branch speculation could have been enabled after it was force-disabled by the PR_SPEC_FORCE_DISABLE prctl command. (bnc#1172783).

CVE-2020-10766: Fixed Rogue cross-process SSBD shutdown, where a Linux scheduler logical bug allows an attacker to turn off the SSBD protection. (bnc#1172781).

CVE-2020-10767: Indirect Branch Prediction Barrier was force-disabled when STIBP is unavailable or enhanced IBRS is available.
(bnc#1172782).

CVE-2020-13974: drivers/tty/vt/keyboard.c had an integer overflow if k_ascii is called several times in a row, aka CID-b86dab054059 (bnc#1172775).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-3218 advisory.

  - An issue was discovered in drivers/firmware/efi/efi.c in the Linux kernel before 5.4. Incorrect access     permissions for the efivar_ssdt ACPI variable could be used by attackers to bypass lockdown or secure boot     restrictions, aka CID-1957a85b0032. (CVE-2019-20908)

  - An issue was discovered in drivers/acpi/acpi_configfs.c in the Linux kernel before 5.7.7. Injection of     malicious ACPI tables via configfs could be used by attackers to bypass lockdown and secure boot     restrictions, aka CID-75b0cea7bf30. (CVE-2020-15780)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:3228 advisory.

  - kernel: lockdown: bypass through ACPI write via efivar_ssdt (CVE-2019-20908)

  - kernel: lockdown: bypass through ACPI write via acpi_configfs (CVE-2020-15780)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:3218 advisory.

  - kernel: lockdown: bypass through ACPI write via efivar_ssdt (CVE-2019-20908)

  - kernel: lockdown: bypass through ACPI write via acpi_configfs (CVE-2020-15780)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:3222 advisory.

  - kernel: use-after-free in sound/core/timer.c (CVE-2019-19807)

  - kernel: lockdown: bypass through ACPI write via efivar_ssdt (CVE-2019-20908)

  - kernel: kernel: DAX hugepages not considered during mremap (CVE-2020-10757)

  - kernel: Rogue cross-process SSBD shutdown. Linux scheduler logical bug allows an attacker to turn off the     SSBD protection. (CVE-2020-10766)

  - kernel: Indirect Branch Prediction Barrier is force-disabled when STIBP is unavailable or enhanced IBRS is     available. (CVE-2020-10767)

  - kernel: Indirect branch speculation can be enabled after it was force-disabled by the     PR_SPEC_FORCE_DISABLE prctl command. (CVE-2020-10768)

  - kernel: buffer overflow in mwifiex_cmd_append_vsie_tlv function in     drivers/net/wireless/marvell/mwifiex/scan.c (CVE-2020-12653)

  - kernel: heap-based buffer overflow in mwifiex_ret_wmm_get_status function in     drivers/net/wireless/marvell/mwifiex/wmm.c (CVE-2020-12654)

  - Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario (CVE-2020-12888)

  - kernel: lockdown: bypass through ACPI write via acpi_configfs (CVE-2020-15780)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:3219 advisory.

  - kernel: lockdown: bypass through ACPI write via efivar_ssdt (CVE-2019-20908)

  - kernel: lockdown: bypass through ACPI write via acpi_configfs (CVE-2020-15780)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2020-5791 advisory.

  - An issue was discovered in drivers/firmware/efi/efi.c in the Linux kernel before 5.4. Incorrect access     permissions for the efivar_ssdt ACPI variable could be used by attackers to bypass lockdown or secure boot     restrictions, aka CID-1957a85b0032. (CVE-2019-20908)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Ubuntu 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4440-1 advisory.

  - An issue was discovered in the Linux kernel through 5.2.13. nbd_genl_status in drivers/block/nbd.c does     not check the nla_nest_start_noflag return value. (CVE-2019-16089)

  - relay_open in kernel/relay.c in the Linux kernel through 5.4.1 allows local users to cause a denial of     service (such as relay blockage) by triggering a NULL alloc_percpu result. (CVE-2019-19462)

  - go7007_snd_init in drivers/media/usb/go7007/snd-go7007.c in the Linux kernel before 5.6 does not call     snd_card_free for a failure path, which causes a memory leak, aka CID-9453264ef586. (CVE-2019-20810)

  - An issue was discovered in drivers/firmware/efi/efi.c in the Linux kernel before 5.4. Incorrect access     permissions for the efivar_ssdt ACPI variable could be used by attackers to bypass lockdown or secure boot     restrictions, aka CID-1957a85b0032. (CVE-2019-20908)

  - A flaw was found in the Linux kernel's implementation of Userspace core dumps. This flaw allows an     attacker with a local account to crash a trivial program and exfiltrate private kernel data.
    (CVE-2020-10732)

  - A flaw was found in the Linux Kernel in versions after 4.5-rc1 in the way mremap handled DAX Huge Pages.
    This flaw allows a local attacker with access to a DAX enabled storage to escalate their privileges on the     system. (CVE-2020-10757)

  - A logic bug flaw was found in Linux kernel before 5.8-rc1 in the implementation of SSBD. A bug in the     logic handling allows an attacker with a local account to disable SSBD protection during a context switch     when additional speculative execution mitigations are in place. This issue was introduced when the per     task/process conditional STIPB switching was added on top of the existing SSBD switching. The highest     threat from this vulnerability is to confidentiality. (CVE-2020-10766)

  - A flaw was found in the Linux kernel before 5.8-rc1 in the implementation of the Enhanced IBPB (Indirect     Branch Prediction Barrier). The IBPB mitigation will be disabled when STIBP is not available or when the     Enhanced Indirect Branch Restricted Speculation (IBRS) is available. This flaw allows a local attacker to     perform a Spectre V2 style attack when this configuration is active. The highest threat from this     vulnerability is to confidentiality. (CVE-2020-10767)

  - A flaw was found in the Linux Kernel before 5.8-rc1 in the prctl() function, where it can be used to     enable indirect branch speculation after it has been disabled. This call incorrectly reports it as being     'force disabled' when it is not and opens the system to Spectre v2 attacks. The highest threat from this     vulnerability is to confidentiality. (CVE-2020-10768)

  - It was discovered that aufs improperly managed inode reference counts in the vfsub_dentry_open() method. A     local attacker could use this vulnerability to cause a denial of service attack. (CVE-2020-11935)

  - An issue was discovered in the Linux kernel 4.4 through 5.7.1. drivers/tty/vt/keyboard.c has an integer     overflow if k_ascii is called several times in a row, aka CID-b86dab054059. NOTE: Members in the community     argue that the integer overflow does not lead to a security issue in this case. (CVE-2020-13974)

  - An issue was discovered in drivers/acpi/acpi_configfs.c in the Linux kernel before 5.7.7. Injection of     malicious ACPI tables via configfs could be used by attackers to bypass lockdown and secure boot     restrictions, aka CID-75b0cea7bf30. (CVE-2020-15780)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4439-1 advisory.

  - **DISPUTED** An issue was discovered in the efi subsystem in the Linux kernel through 5.1.5.
    phys_efi_set_virtual_address_map in arch/x86/platform/efi/efi.c and efi_call_phys_prolog in     arch/x86/platform/efi/efi_64.c mishandle memory allocation failures. NOTE: This id is disputed as not     being an issue because All the code touched by the referenced commit runs only at boot, before any user     processes are started. Therefore, there is no possibility for an unprivileged user to control it..
    (CVE-2019-12380)

  - An issue was discovered in the Linux kernel through 5.2.13. nbd_genl_status in drivers/block/nbd.c does     not check the nla_nest_start_noflag return value. (CVE-2019-16089)

  - btrfs_root_node in fs/btrfs/ctree.c in the Linux kernel through 5.3.12 allows a NULL pointer dereference     because rcu_dereference(root->node) can be zero. (CVE-2019-19036)

  - relay_open in kernel/relay.c in the Linux kernel through 5.4.1 allows local users to cause a denial of     service (such as relay blockage) by triggering a NULL alloc_percpu result. (CVE-2019-19462)

  - go7007_snd_init in drivers/media/usb/go7007/snd-go7007.c in the Linux kernel before 5.6 does not call     snd_card_free for a failure path, which causes a memory leak, aka CID-9453264ef586. (CVE-2019-20810)

  - A flaw was found in the Linux kernel's implementation of Userspace core dumps. This flaw allows an     attacker with a local account to crash a trivial program and exfiltrate private kernel data.
    (CVE-2020-10732)

  - A flaw was found in the Linux Kernel in versions after 4.5-rc1 in the way mremap handled DAX Huge Pages.
    This flaw allows a local attacker with access to a DAX enabled storage to escalate their privileges on the     system. (CVE-2020-10757)

  - A logic bug flaw was found in Linux kernel before 5.8-rc1 in the implementation of SSBD. A bug in the     logic handling allows an attacker with a local account to disable SSBD protection during a context switch     when additional speculative execution mitigations are in place. This issue was introduced when the per     task/process conditional STIPB switching was added on top of the existing SSBD switching. The highest     threat from this vulnerability is to confidentiality. (CVE-2020-10766)

  - A flaw was found in the Linux kernel before 5.8-rc1 in the implementation of the Enhanced IBPB (Indirect     Branch Prediction Barrier). The IBPB mitigation will be disabled when STIBP is not available or when the     Enhanced Indirect Branch Restricted Speculation (IBRS) is available. This flaw allows a local attacker to     perform a Spectre V2 style attack when this configuration is active. The highest threat from this     vulnerability is to confidentiality. (CVE-2020-10767)

  - A flaw was found in the Linux Kernel before 5.8-rc1 in the prctl() function, where it can be used to     enable indirect branch speculation after it has been disabled. This call incorrectly reports it as being     'force disabled' when it is not and opens the system to Spectre v2 attacks. The highest threat from this     vulnerability is to confidentiality. (CVE-2020-10768)

  - It was discovered that aufs improperly managed inode reference counts in the vfsub_dentry_open() method. A     local attacker could use this vulnerability to cause a denial of service attack. (CVE-2020-11935)

  - An issue was discovered in the Linux kernel 4.4 through 5.7.1. drivers/tty/vt/keyboard.c has an integer     overflow if k_ascii is called several times in a row, aka CID-b86dab054059. NOTE: Members in the community     argue that the integer overflow does not lead to a security issue in this case. (CVE-2020-13974)

  - An issue was discovered in drivers/acpi/acpi_configfs.c in the Linux kernel before 5.7.7. Injection of     malicious ACPI tables via configfs could be used by attackers to bypass lockdown and secure boot     restrictions, aka CID-75b0cea7bf30. (CVE-2020-15780)

  - An issue was discovered in drivers/firmware/efi/efi.c in the Linux kernel before 5.4. Incorrect access     permissions for the efivar_ssdt ACPI variable could be used by attackers to bypass lockdown or secure boot     restrictions, aka CID-1957a85b0032. (CVE-2019-20908)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4427-1 advisory.

  - **DISPUTED** An issue was discovered in the efi subsystem in the Linux kernel through 5.1.5.
    phys_efi_set_virtual_address_map in arch/x86/platform/efi/efi.c and efi_call_phys_prolog in     arch/x86/platform/efi/efi_64.c mishandle memory allocation failures. NOTE: This id is disputed as not     being an issue because All the code touched by the referenced commit runs only at boot, before any user     processes are started. Therefore, there is no possibility for an unprivileged user to control it..
    (CVE-2019-12380)

  - In the Linux kernel through 5.4.6, there are information leaks of uninitialized memory to a USB device in     the drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c driver, aka CID-da2311a6385c. (CVE-2019-19947)

  - go7007_snd_init in drivers/media/usb/go7007/snd-go7007.c in the Linux kernel before 5.6 does not call     snd_card_free for a failure path, which causes a memory leak, aka CID-9453264ef586. (CVE-2019-20810)

  - An issue was discovered in drivers/firmware/efi/efi.c in the Linux kernel before 5.4. Incorrect access     permissions for the efivar_ssdt ACPI variable could be used by attackers to bypass lockdown or secure boot     restrictions, aka CID-1957a85b0032. (CVE-2019-20908)

  - A flaw was found in the Linux kernel's implementation of Userspace core dumps. This flaw allows an     attacker with a local account to crash a trivial program and exfiltrate private kernel data.
    (CVE-2020-10732)

  - A logic bug flaw was found in Linux kernel before 5.8-rc1 in the implementation of SSBD. A bug in the     logic handling allows an attacker with a local account to disable SSBD protection during a context switch     when additional speculative execution mitigations are in place. This issue was introduced when the per     task/process conditional STIPB switching was added on top of the existing SSBD switching. The highest     threat from this vulnerability is to confidentiality. (CVE-2020-10766)

  - A flaw was found in the Linux kernel before 5.8-rc1 in the implementation of the Enhanced IBPB (Indirect     Branch Prediction Barrier). The IBPB mitigation will be disabled when STIBP is not available or when the     Enhanced Indirect Branch Restricted Speculation (IBRS) is available. This flaw allows a local attacker to     perform a Spectre V2 style attack when this configuration is active. The highest threat from this     vulnerability is to confidentiality. (CVE-2020-10767)

  - A flaw was found in the Linux Kernel before 5.8-rc1 in the prctl() function, where it can be used to     enable indirect branch speculation after it has been disabled. This call incorrectly reports it as being     'force disabled' when it is not and opens the system to Spectre v2 attacks. The highest threat from this     vulnerability is to confidentiality. (CVE-2020-10768)

  - It was discovered that aufs improperly managed inode reference counts in the vfsub_dentry_open() method. A     local attacker could use this vulnerability to cause a denial of service attack. (CVE-2020-11935)

  - An issue was discovered in the Linux kernel 4.4 through 5.7.1. drivers/tty/vt/keyboard.c has an integer     overflow if k_ascii is called several times in a row, aka CID-b86dab054059. NOTE: Members in the community     argue that the integer overflow does not lead to a security issue in this case. (CVE-2020-13974)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 16.04 LTS / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4426-1 advisory.

  - An issue was discovered in drivers/firmware/efi/efi.c in the Linux kernel before 5.4. Incorrect access     permissions for the efivar_ssdt ACPI variable could be used by attackers to bypass lockdown or secure boot     restrictions, aka CID-1957a85b0032. (CVE-2019-20908)

  - A flaw was found in the Linux Kernel in versions after 4.5-rc1 in the way mremap handled DAX Huge Pages.
    This flaw allows a local attacker with access to a DAX enabled storage to escalate their privileges on the     system. (CVE-2020-10757)

  - It was discovered that aufs improperly managed inode reference counts in the vfsub_dentry_open() method. A     local attacker could use this vulnerability to cause a denial of service attack. (CVE-2020-11935)

  - An issue was discovered in drivers/acpi/acpi_configfs.c in the Linux kernel before 5.7.7. Injection of     malicious ACPI tables via configfs could be used by attackers to bypass lockdown and secure boot     restrictions, aka CID-75b0cea7bf30. (CVE-2020-15780)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
140378	SUSE SLES15 Security Update : kernel (SUSE-SU-2020:2487-1)	Nessus	SuSE Local Security Checks	high
139476	Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2020-5804)	Nessus	Oracle Linux Local Security Checks	high
139401	openSUSE Security Update : the Linux Kernel (openSUSE-2020-1153)	Nessus	SuSE Local Security Checks	critical
139363	SUSE SLES12 Security Update : kernel (SUSE-SU-2020:2122-1)	Nessus	SuSE Local Security Checks	critical
139362	SUSE SLES12 Security Update : kernel (SUSE-SU-2020:2121-1)	Nessus	SuSE Local Security Checks	critical
139361	SUSE SLES12 Security Update : kernel (SUSE-SU-2020:2119-1)	Nessus	SuSE Local Security Checks	critical
139310	SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2020:2107-1)	Nessus	SuSE Local Security Checks	critical
139309	SUSE SLES15 Security Update : kernel (SUSE-SU-2020:2106-1)	Nessus	SuSE Local Security Checks	critical
139275	Oracle Linux 8 : kernel (ELSA-2020-3218)	Nessus	Oracle Linux Local Security Checks	medium
139191	RHEL 8 : kernel (RHSA-2020:3228)	Nessus	Red Hat Local Security Checks	medium
139188	RHEL 8 : kernel (RHSA-2020:3218)	Nessus	Red Hat Local Security Checks	medium
139187	RHEL 8 : kernel (RHSA-2020:3222)	Nessus	Red Hat Local Security Checks	high
139183	RHEL 8 : kernel-rt (RHSA-2020:3219)	Nessus	Red Hat Local Security Checks	medium
139166	Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2020-5791)	Nessus	Oracle Linux Local Security Checks	medium
139028	Ubuntu 18.04 LTS : linux kernel vulnerabilities (USN-4440-1)	Nessus	Ubuntu Local Security Checks	high
139027	Ubuntu 18.04 LTS : Linux kernel vulnerabilities (USN-4439-1)	Nessus	Ubuntu Local Security Checks	high
138836	Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-4427-1)	Nessus	Ubuntu Local Security Checks	high
138835	Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-4426-1)	Nessus	Ubuntu Local Security Checks	high

Detections

Analytics

CVE-2019-20908

medium

Tenable Plugins

high

high

critical

critical

critical

critical

critical

critical

medium

medium

medium

high

medium

medium

high

high

high

high