The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:2725 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    Security Fix(es):

    * kernel: size_t-to-int conversion vulnerability in the filesystem layer (CVE-2021-33909)

    * kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan (CVE-2021-33034)

    * kernel: use-after-free in show_numa_stats function (CVE-2019-20934)

    * kernel: mishandles invalid descriptors in drivers/media/usb/gspca/xirlink_cit.c (CVE-2020-11668)

    * kernel: use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c (CVE-2021-33033)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Bug Fix(es):

    * [RHEL7.9.z] n_tty_open: BUG: unable to handle kernel paging request (BZ#1872778)

    * [ESXi][RHEL7.8]qp_alloc_hypercall result = -20 / Could not attach to queue pair with -20 with     vSphere Fault Tolerance enabled (BZ#1892237)

    * [RHEL7.9][s390x][Regression] Sino Nomine swapgen IBM z/VM emulated DASD with DIAG driver returns     EOPNOTSUPP (BZ#1910395)

    * False-positive hard lockup detected while processing the thread state information (SysRq-T) (BZ#1912221)

    * RHEL7.9 zstream - s390x LPAR with NVMe SSD will panic when it has 32 or more IFL (pci) (BZ#1917943)

    * The NMI watchdog detected a hard lockup while printing RCU CPU stall warning messages to the serial     console (BZ#1924688)

    * nvme hangs when trying to allocate reserved tag (BZ#1926825)

    * [REGRESSION] call into AER handling regardless of severity triggers do_recovery() unnecessarily on     correctable PCIe errors (BZ#1933663)

    * Module nvme_core: A double free  of the kmalloc-512 cache between nvme_trans_log_temperature() and     nvme_get_log_page(). (BZ#1946793)

    * sctp - SCTP_CMD_TIMER_START queues active timer kernel BUG at kernel/timer.c:1000! (BZ#1953052)

    * [Hyper-V][RHEL-7]When CONFIG_NET_POLL_CONTROLLER is set, mainline commit 2a7f8c3b1d3fee is needed     (BZ#1953075)

    * Kernel panic at cgroup_is_descendant (BZ#1957719)

    * [Hyper-V][RHEL-7]Commits To Fix Kdump Failures (BZ#1957803)

    * IGMPv2 JOIN packets incorrectly routed to loopback (BZ#1958339)

    * [CKI kernel builds]: x86 binaries in non-x86 kernel rpms breaks systemtap [7.9.z] (BZ#1960193)

    * mlx4: Fix memory allocation in mlx4_buddy_init needed (BZ#1962406)

    * incorrect assertion on pi_state->pi_mutex.wait_lock from pi_state_update_owner() (BZ#1965495)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:2734 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    Security Fix(es):

    * kernel: size_t-to-int conversion vulnerability in the filesystem layer (CVE-2021-33909)

    * kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan (CVE-2021-33034)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Bug Fix(es):

    * xfs umount hangs in xfs_wait_buftarg() due to negative bt_io_count (BZ#1949916)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:2727 advisory.

    This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify     the code of a running kernel.

    Security Fix(es):

    * kernel: size_t-to-int conversion vulnerability in the filesystem layer (CVE-2021-33909)

    * kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan (CVE-2021-33034)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote Debian 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-2713 advisory.

  - fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer     allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an     unprivileged user, aka CID-8cae8cd89f05. (CVE-2021-33909)

  - net/can/bcm.c in the Linux kernel through 5.12.10 allows local users to obtain sensitive information from     kernel stack memory because parts of a data structure are uninitialized. (CVE-2021-34693)

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

An update of the linux package has been released.

ID	Name	Product	Family	Published	Updated	Severity
151888	RHEL 7 : kernel (RHSA-2021:2725)	Nessus	Red Hat Local Security Checks	7/21/2021	11/7/2024	high
151859	RHEL 7 : kernel (RHSA-2021:2734)	Nessus	Red Hat Local Security Checks	7/21/2021	11/7/2024	high
151863	RHEL 7 : kpatch-patch (RHSA-2021:2727)	Nessus	Red Hat Local Security Checks	7/21/2021	11/7/2024	high
151891	Debian DLA-2713-1 : linux - LTS security update	Nessus	Debian Local Security Checks	7/21/2021	1/20/2022	high
151965	Photon OS 4.0: Linux PHSA-2021-4.0-0065	Nessus	PhotonOS Local Security Checks	7/22/2021	9/22/2025	high

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