远程 Ubuntu 18.04 LTS 主机上安装的一个程序包受到 USN-4258-1 公告中提及的多个漏洞影响。

  - 5.2.8 及之前版本的 Linux 内核中的 drivers/net/wireless/ath/ath10k/usb.c 可通过端点描述符中的不完整地址造成空指针取消引用。(CVE-2019-15099)

  - 在 Linux 内核 5.2.9 及之前的版本中发现问题。在 drivers/media/usb/b2c2/flexcop-usb.c 驱动程序中的 flexcop_usb_probe 函数中，存在恶意 USB 设备造成的空指针取消引用。
    (CVE-2019-15291)

  - 在 5.3.8 及之前的 Linux 内核的 drivers/media/platform/vivid 中发现问题。在一些用户拥有 /dev/video0 访问权限的 Linux 发行版本上，用户可以利用此漏洞提升权限，但前提是刚好已加载驱动程序。在此驱动程序（V4L2 子系统的一部分）中进行流停止期间，存在多个争用条件。这些问题因 vivid_stop_generating_vid_cap()、vivid_stop_generating_vid_out()、sdr_cap_stop_streaming() 以及相应 kthread 中的错误互斥体锁定造成。至少有一个争用条件会导致释放后使用。(CVE-2019-18683)

  - 版本低于 5.1 的 Linux 内核中的 fs/btrfs/volumes.c 允许通过构建的 btrfs 图像造成 btrfs_verify_dev_extents 空指针取消引用，这是未正确在 find_device 中处理 fs_devices-> devices 所致，又称为 CID-09ba3bc9dd15。(CVE-2019-18885)

  - 在 5.3.11 及之前的 Linux 内核中，crypto/crypto_user_base.c 的 crypto_reportstat() 函数中存在内存泄露漏洞，导致攻击者可以通过触发 crypto_reportstat_alg() 失败造成拒绝服务（内存消耗），也称为 CID-c03b04dcdba1。(CVE-2019-19050)

  - 在 Linux 内核 5.3.11 及之前的版本中，crypto/crypto_user_base.c 的 crypto_report() 函数中存在内存泄露漏洞，使攻击者能够通过触发 crypto_report_alg() 失败造成拒绝服务（内存消耗），也称为 CID-ffdde5932042。(CVE-2019-19062)

  - 在 5.3.11 及之前的 Linux 内核中，drivers/net/wireless/rsi/rsi_91x_mgmt.c 的 rsi_send_beacon() 函数中存在内存泄漏漏洞，导致攻击者可以通过触发 rsi_prepare_beacon() 失败造成拒绝服务（内存消耗），也称为 CID-d563131ef23c。(CVE-2019-19071)

  - 在 Linux 内核 5.3.11 及其之前版本中，drivers/infiniband/hw/bnxt_re/ib_verbs.c 的 bnxt_re_create_srq() 函数中存在内存泄漏，允许攻击者通过触发复制到 udata 失败造成拒绝服务（内存消耗），亦称 CID-4a9d46a9fe14。(CVE-2019-19077)

  - 在 Linux 内核 5.3.11 及之前版本中，drivers/net/wireless/ath/ath10k/usb.c 中的 ath10k_usb_hif_tx_sg() 函数中存在内存泄露，攻击者可利用此漏洞，通过触发 usb_submit_urb() 失败，造成拒绝服务（内存消耗），亦即 CID-b8d17e7d93d2。 (CVE-2019-19078)

  - 在 5.3 之前的 Linux 内核中，net/qrtr/tun.c 的 qrtr_tun_write_iter() 函数中存在内存泄露漏洞，该漏洞允许攻击者造成拒绝服务（内存消耗），也称为 CID-a21b7f0cff19。(CVE-2019-19079)

  - 在 5.3.11 及之前的 Linux 内核中，drivers/gpu/drm/amd/display/dc 下的 *create_resource_pool() 函数中存在内存泄漏漏洞，允许攻击者造成拒绝服务（内存消耗）。这会影响 drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c 中的 dce120_create_resource_pool() 函数、drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c 中的 dce110_create_resource_pool() 函数、drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c 中的 dce100_create_resource_pool() 函数、drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c 中的 dcn10_create_resource_pool() 函数、drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c 中的 dce112_create_resource_pool() 函数，也称为 CID-104c307147ad。(CVE-2019-19082)

  - 在 5.1 之前的 Linux 内核的 AppleTalk 子系统中，由于 register_snap_client 可能返回 NULL，因此可能存在空指针取消引用。这将导致 net/appletalk/aarp.c 和 net/appletalk/ddp.c 发生拒绝服务，unregister_snap_client 即为一例，也称为 CID-9804501fa122。(CVE-2019-19227)

  - 在 5.3.13 及之前的 Linux 内核中，drivers/tty/vt/vc_screen.c 的 vcs_write 没有阻止对 vcsu 设备的写入访问，也称为 CID-0c9acb1af77a。(CVE-2019-19252)

  - 在 Linux 内核 3.13 至 5.4 版本中，发现 Linux 内核的 KVM 虚拟机监控程序处理 'KVM_GET_EMULATED_CPUID' ioctl(2) 请求以获取 KVM 虚拟机监控程序所模拟 CPUID 功能的方式中存在越界内存写入问题。能够访问“/dev/kvm”设备的用户或进程可利用此缺陷，造成系统崩溃，从而导致拒绝服务。 (CVE-2019-19332)

  - 版本低于 5.4.2 的 Linux 内核未正确处理 ext4_expand_extra_isize，__ext4_expand_extra_isize 和 ext4_xattr_set_entry 中的释放后使用错误即为一例，此问题与 fs/ext4/inode.c 和 fs/ext4/super.c 相关，亦即 CID-4ea99936a163。(CVE-2019-19767)

请注意，Nessus 尚未测试这些问题，而是只依据应用程序自我报告的版本号进行判断。

リモートの Ubuntu 18.04 LTS ホストには、USN-4258-1のアドバイザリに記載された複数の脆弱性の影響を受けるパッケージがインストールされています。

  - 5.2.8 までの Linux カーネルの drivers/net/wireless/ath/ath10k/usb.c に、エンドポイント記述子の不完全なアドレスによる NULL ポインターデリファレンスがあります。(CVE-2019-15099)

  - 5.2.9までの Linux カーネルで問題が発見されました。drivers/media/usb/b2c2/flexcop-usb.cドライバーのflexcop_usb_probe関数に、悪意のあるUSBデバイスに引き起こされたNULLポインターのデリファレンスがあります。
    (CVE-2019-15291)

  - 5.3.8 までの Linux カーネル内の drivers/media/platform/vivid で問題が発見されました。この問題は、ローカルユーザーが/dev/video0へのアクセス権を持っている一部のLinuxディストリビューションで権限昇格に悪用される可能性がありますが、これが発生するのはドライバーがロードされた場合だけです。このドライバーには、ストリーミング停止中の複数の競合状態があります（V4L2サブシステムの一部）。これらの問題は、vivid_stop_generate_vid_cap（）、vivid_stop_generate_vid_out（）、sdr_cap_stop_streaming（）、および対応するkthreadsでの間違ったmutexロックによって引き起こされます。これらの競合状態の少なくとも 1 つがメモリ解放後使用につながります。(CVE-2019-18683)

  -5.1より前のLinuxカーネルのfs/btrfs/volumes.cは、fs_devices->devicesがfind_deviceで誤って処理されるため、細工されたbtrfsイメージを介して、btrfs_verify_dev_extentsのNULLポインターデリファレンスを許可します（別名CID-09ba3bc9dd15）。（CVE-2019-18885）

  - 5.3.11 までの Linux カーネルの crypto/crypto_user_stat.c の crypto_reportstat() 関数でのメモリリークにより、攻撃者が crypto_reportstat_alg() の失敗 (別名 CID-c03b04dcdba1) をトリガーして、サービス拒否 (メモリ消費) を引き起こす可能性があります。(CVE-2019-19050)

  5.3.11までのLinuxカーネルにおいてcrypto/crypto_user_base.cのcrypto_report()関数でのメモリリークによって、攻撃者が、CID-ffdde5932042とも呼ばれるcrypto_report_alg()の失敗をトリガーすることで、サービス拒否 (メモリ消費) を引き起こす可能性があります。(CVE-2019-19062)

  - 5.3.11 までの Linux カーネルの drivers/net/wireless/rsi/rsi_91x_mgmt.c にある rsi_send_beacon() 関数のメモリリークにより、攻撃者が rsi_prepare_beacon() の失敗 (別名 CID-d563131ef23c) をトリガーして、サービス拒否 (メモリ消費) を引き起こす可能性があります。(CVE-2019-19071)

  - 5.3.11 までの Linux カーネルの drivers/infiniband/hw/bnxt_re/ib_verbs.c にある bnxt_re_create_srq() 関数のメモリリークにより、攻撃者が udata へのコピーの失敗 (別名 CID-4a9d46a9fe14) をトリガーして、サービス拒否 (メモリ消費) を引き起こす可能性があります。(CVE-2019-19077)

  -5.3.11までのLinuxカーネルのdrivers/net/wireless/ath/ath10k/usb.cのath10k_usb_hif_tx_sg()関数のメモリリークにより、攻撃者がusb_submit_urb()の失敗をトリガーすることで、サービス拒否 (メモリ消費) を引き起こす可能性があります (別名CID-b8d17e7d93d2)。(CVE-2019-19078) 

  - 5.3 より前の Linux カーネルの net/qrtr/tun.c 内の qrtr_tun_write_iter() 関数のメモリリークにより、攻撃者が、サービス拒否 (メモリ消費) を引き起こす可能性があります (別名: CID-a21b7f0cff19)。(CVE-2019-19079)

  - 5.3.11 までの Linux カーネル内の drivers/gpu/drm/amd/display/dc の *create_resource_pool() 関数のメモリリークにより、攻撃者がサービス拒否 (メモリ消費) を引き起こす可能性があります。これは、drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c の dce120_create_resource_pool() 関数、drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c の dce110_create_resource_pool() 関数、drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c の dce100_create_resource_pool() 関数、drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c の dcn10_create_resource_pool() 関数、および drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c の dce112_create_resource_pool() 関数に影響を与えます (別名 CID-104c307147ad)。(CVE-2019-19082)

  - 5.1 より前の Linux カーネル内の AppleTalk サブシステムでは、register_snap_client が NULL を返すため、NULL ポインターデリファレンスが発生する可能性がありました。これは、unregister_snap_client (別名 CID-9804501fa122) で示されているように、net/appletalk/aarp.c および net/appletalk/ddp.c でサービス拒否を引き起こす可能性があります。(CVE-2019-19227)

  - 5.3.13 までの Linux カーネルの drivers/tty/vt/vc_screen.c の vcs_write が、vcsu デバイスへの書き込みアクセスを防止しません (別名 CID-0c9acb1af77a)。(CVE-2019-19252)

  -バージョン3.13から5.4までのLinuxカーネルにおいて、LinuxカーネルのKVMハイパーバイザーが'KVM_GET_EMULATED_CPUID' ioctl(2)リクエストを処理してKVMハイパーバイザーがエミュレートしたCPUID機能を取得する方法に、領域外メモリ書き込みの問題が見つかりました。「/dev/kvm」デバイスにアクセスできるユーザーまたはプロセスがこの欠陥を利用してシステムをクラッシュさせ、サービス拒否を引き起こす可能性がありました。(CVE-2019-19332)

  - __ext4_expand_extra_isize と ext4_xattr_set_entry 内のメモリ解放後使用エラーで実証されているように、5.4.2 より前の Linux カーネルが ext4_expand_extra_isize の処理を誤っています。これは、fs/ext4/inode.c、および fs/ext4/super.c に関連します。(別名 CID-4ea99936a163) (CVE-2019-19767)

Nessus はこれらの問題をテストしておらず、代わりにアプリケーションが自己報告するバージョン番号にのみ依存していることに注意してください。

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A memory leak in the qrtr_tun_write_iter() function in net/qrtr/tun.c in the Linux kernel before 5.3     allows attackers to cause a denial of service (memory consumption), aka CID-a21b7f0cff19. (CVE-2019-19079)

Note that Nessus relies on the presence of the package as reported by the vendor.

According to the versions of the kernel packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - drivers/net/wireless/rsi/rsi_91x_usb.c in the Linux     kernel through 5.2.9 has a Double Free via crafted USB     device traffic (which may be remote via usbip or     usbredir).(CVE-2019-15504)

  - In the Linux kernel before 5.2.14, rds6_inc_info_copy     in net/rds/recv.c allows attackers to obtain sensitive     information from kernel stack memory because tos and     flags fields are not initialized.(CVE-2019-16714)

  - drivers/scsi/qla2xxx/qla_os.c in the Linux kernel     5.2.14 does not check the alloc_workqueue return value,     leading to a NULL pointer dereference.(CVE-2019-16233)

  - 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)

  - llcp_sock_create in net/nfc/llcp_sock.c in the AF_NFC     network module in the Linux kernel through 5.3.2 does     not enforce CAP_NET_RAW, which means that unprivileged     users can create a raw socket, aka     CID-3a359798b176.(CVE-2019-17056)

  - base_sock_create in drivers/isdn/mISDN/socket.c in the     AF_ISDN network module in the Linux kernel through     5.3.2 does not enforce CAP_NET_RAW, which means that     unprivileged users can create a raw socket, aka     CID-b91ee4aa2a21.(CVE-2019-17055)

  - atalk_create in net/appletalk/ddp.c in the AF_APPLETALK     network module in the Linux kernel through 5.3.2 does     not enforce CAP_NET_RAW, which means that unprivileged     users can create a raw socket, aka     CID-6cc03e8aa36c.(CVE-2019-17054)

  - ieee802154_create in net/ieee802154/socket.c in the     AF_IEEE802154 network module in the Linux kernel     through 5.3.2 does not enforce CAP_NET_RAW, which means     that unprivileged users can create a raw socket, aka     CID-e69dbd4619e7.(CVE-2019-17053)

  - ax25_create in net/ax25/af_ax25.c in the AF_AX25     network module in the Linux kernel through 5.3.2 does     not enforce CAP_NET_RAW, which means that unprivileged     users can create a raw socket, aka     CID-0614e2b73768.(CVE-2019-17052)

  - An issue was discovered in write_tpt_entry in     drivers/infiniband/hw/cxgb4/mem.c in the Linux kernel     through 5.3.2. The cxgb4 driver is directly calling     dma_map_single (a DMA function) from a stack variable.
    This could allow an attacker to trigger a Denial of     Service, exploitable if this driver is used on an     architecture for which this stack/DMA interaction has     security relevance.(CVE-2019-17075)

  - rtl_p2p_noa_ie in     drivers/net/wireless/realtek/rtlwifi/ps.c in the Linux     kernel through 5.3.6 lacks a certain upper-bound check,     leading to a buffer overflow.(CVE-2019-17666)

  - In the Linux kernel through 5.3.2,     cfg80211_mgd_wext_giwessid in net/wireless/wext-sme.c     does not reject a long SSID IE, leading to a Buffer     Overflow.(CVE-2019-17133)

  - An issue was discovered in net/wireless/nl80211.c in     the Linux kernel through 5.2.17. It does not check the     length of variable elements in a beacon head, leading     to a buffer overflow.(CVE-2019-16746)

  - Insufficient access control in the Intel(R)     PROSet/Wireless WiFi Software driver before version     21.10 may allow an unauthenticated user to potentially     enable denial of service via adjacent     access.(CVE-2019-0136)

  - 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)

  - A memory leak in the ql_alloc_large_buffers() function     in drivers/net/ethernet/qlogic/qla3xxx.c in the Linux     kernel before 5.3.5 allows local users to cause a     denial of service (memory consumption) by triggering     pci_dma_mapping_error() failures, aka     CID-1acb8f2a7a9f.(CVE-2019-18806)

  - A memory leak in the dwc3_pci_probe() function in     drivers/usb/dwc3/dwc3-pci.c in the Linux kernel through     5.3.9 allows attackers to cause a denial of service     (memory consumption) by triggering     platform_device_add_properties() failures, aka     CID-9bbfceea12a8.(CVE-2019-18813)

  - A memory leak in the af9005_identify_state() function     in drivers/media/usb/dvb-usb/af9005.c in the Linux     kernel through 5.3.9 allows attackers to cause a denial     of service (memory consumption), aka     CID-2289adbfa559.(CVE-2019-18809)

  - A memory leak in the ccp_run_sha_cmd() function in     drivers/crypto/ccp/ccp-ops.c in the Linux kernel     through 5.3.9 allows attackers to cause a denial of     service (memory consumption), aka     CID-128c66429247.(CVE-2019-18808)

  - A memory leak in the bfad_im_get_stats() function in     drivers/scsi/bfa/bfad_attr.c in the Linux kernel     through 5.3.11 allows attackers to cause a denial of     service (memory consumption) by triggering     bfa_port_get_stats() failures, aka     CID-0e62395da2bd.(CVE-2019-19066)

  - A memory leak in the ath9k_wmi_cmd() function in     drivers/net/wireless/ath/ath9k/wmi.c in the Linux     kernel through 5.3.11 allows attackers to cause a     denial of service (memory consumption), aka     CID-728c1e2a05e4.(CVE-2019-19074)

  - A vulnerability in the web server of Cisco Integrated     Management Controller (IMC) could allow an     authenticated, remote attacker to set sensitive     configuration values and gain elevated privileges. The     vulnerability is due to improper handling of substring     comparison operations that are performed by the     affected software. An attacker could exploit this     vulnerability by sending a crafted HTTP request to the     affected software. A successful exploit could allow the     attacker with read-only privileges to gain     administrator privileges.(CVE-2019-19073)

  - Two memory leaks in the rtl_usb_probe() function in     drivers/net/wireless/realtek/rtlwifi/usb.c in the Linux     kernel through 5.3.11 allow attackers to cause a denial     of service (memory consumption), aka     CID-3f9361695113.(CVE-2019-19063)

  - Two memory leaks in the mwifiex_pcie_init_evt_ring()     function in drivers/net/wireless/marvell/mwifiex/pcie.c     in the Linux kernel through 5.3.11 allow attackers to     cause a denial of service (memory consumption) by     triggering mwifiex_map_pci_memory() failures, aka     CID-d10dcb615c8e.(CVE-2019-19057)

  - A memory leak in the mwifiex_pcie_alloc_cmdrsp_buf()     function in drivers/net/wireless/marvell/mwifiex/pcie.c     in the Linux kernel through 5.3.11 allows attackers to     cause a denial of service (memory consumption) by     triggering mwifiex_map_pci_memory() failures, aka     CID-db8fd2cde932.(CVE-2019-19056)

  - A memory leak in the gs_can_open() function in     drivers/net/can/usb/gs_usb.c in the Linux kernel before     5.3.11 allows attackers to cause a denial of service     (memory consumption) by triggering usb_submit_urb()     failures, aka CID-fb5be6a7b486.(CVE-2019-19052)

  - An issue was discovered in the Linux kernel through     5.3.9. There is a use-after-free when aa_label_parse()     fails in aa_audit_rule_init() in     security/apparmor/audit.c.(CVE-2019-18814)

  - Memory leaks in *clock_source_create() functions under     drivers/gpu/drm/amd/display/dc in the Linux kernel     before 5.3.8 allow attackers to cause a denial of     service (memory consumption). This affects the     dce112_clock_source_create() function in     drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c     , the dce100_clock_source_create() function in     drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c     , the dcn10_clock_source_create() function in     drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c,     the dcn20_clock_source_create() function in     drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c,     the dce120_clock_source_create() function in     drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c     , the dce110_clock_source_create() function in     drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c     , and the dce80_clock_source_create() function in     drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c,     aka CID-055e547478a1.(CVE-2019-19083)

  - Memory leaks in *create_resource_pool() functions under     drivers/gpu/drm/amd/display/dc in the Linux kernel     through 5.3.11 allow attackers to cause a denial of     service (memory consumption). This affects the     dce120_create_resource_pool() function in     drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c     , the dce110_create_resource_pool() function in     drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c     , the dce100_create_resource_pool() function in     drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c     , the dcn10_create_resource_pool() function in     drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c,     and the dce112_create_resource_pool() function in     drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c     , aka CID-104c307147ad.(CVE-2019-19082)

  - A memory leak in the nfp_flower_spawn_vnic_reprs()     function in     drivers/net/ethernet/netronome/nfp/flower/main.c in the     Linux kernel before 5.3.4 allows attackers to cause a     denial of service (memory consumption), aka     CID-8ce39eb5a67a.(CVE-2019-19081)

  - Four memory leaks in the nfp_flower_spawn_phy_reprs()     function in     drivers/net/ethernet/netronome/nfp/flower/main.c in the     Linux kernel before 5.3.4 allow attackers to cause a     denial of service (memory consumption), aka     CID-8572cea1461a.(CVE-2019-19080)

  - A memory leak in the qrtr_tun_write_iter() function in     net/qrtr/tun.c in the Linux kernel before 5.3 allows     attackers to cause a denial of service (memory     consumption), aka CID-a21b7f0cff19.(CVE-2019-19079)

  - A memory leak in the ath10k_usb_hif_tx_sg() function in     drivers/net/wireless/ath/ath10k/usb.c in the Linux     kernel through 5.3.11 allows attackers to cause a     denial of service (memory consumption) by triggering     usb_submit_urb() failures, aka     CID-b8d17e7d93d2.(CVE-2019-19078)

  - A memory leak in the bnxt_re_create_srq() function in     drivers/infiniband/hw/bnxt_re/ib_verbs.c in the Linux     kernel through 5.3.11 allows attackers to cause a     denial of service (memory consumption) by triggering     copy to udata failures, aka     CID-4a9d46a9fe14.(CVE-2019-19077)

  - A memory leak in the ca8210_probe() function in     drivers/net/ieee802154/ca8210.c in the Linux kernel     before 5.3.8 allows attackers to cause a denial of     service (memory consumption) by triggering     ca8210_get_platform_data() failures, aka     CID-6402939ec86e.(CVE-2019-19075)

  - A memory leak in the rsi_send_beacon() function in     drivers/net/wireless/rsi/rsi_91x_mgmt.c in the Linux     kernel through 5.3.11 allows attackers to cause a     denial of service (memory consumption) by triggering     rsi_prepare_beacon() failures, aka     CID-d563131ef23c.(CVE-2019-19071)

  - A memory leak in the rtl8xxxu_submit_int_urb() function     in     drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c     in the Linux kernel through 5.3.11 allows attackers to     cause a denial of service (memory consumption) by     triggering usb_submit_urb() failures, aka     CID-a2cdd07488e6.(CVE-2019-19068)

  - ** DISPUTED ** Four memory leaks in the acp_hw_init()     function in drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c in     the Linux kernel before 5.3.8 allow attackers to cause     a denial of service (memory consumption) by triggering     mfd_add_hotplug_devices() or pm_genpd_add_device()     failures, aka CID-57be09c6e874. NOTE: third parties     dispute the relevance of this because the attacker must     already have privileges for module     loading.(CVE-2019-19067)

  - A memory leak in the sdma_init() function in     drivers/infiniband/hw/hfi1/sdma.c in the Linux kernel     before 5.3.9 allows attackers to cause a denial of     service (memory consumption) by triggering     rhashtable_init() failures, aka     CID-34b3be18a04e.(CVE-2019-19065)

  - Multiple memory leaks in the     iwl_pcie_ctxt_info_gen3_init() function in     drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.
    c in the Linux kernel through 5.3.11 allow attackers to     cause a denial of service (memory consumption) by     triggering iwl_pcie_init_fw_sec() or     dma_alloc_coherent() failures, aka     CID-0f4f199443fa.(CVE-2019-19059)

  - A memory leak in the alloc_sgtable() function in     drivers/net/wireless/intel/iwlwifi/fw/dbg.c in the     Linux kernel through 5.3.11 allows attackers to cause a     denial of service (memory consumption) by triggering     alloc_page() failures, aka     CID-b4b814fec1a5.(CVE-2019-19058)

  - A memory leak in the i2400m_op_rfkill_sw_toggle()     function in drivers/net/wimax/i2400m/op-rfkill.c in the     Linux kernel before 5.3.11 allows attackers to cause a     denial of service (memory consumption), aka     CID-6f3ef5c25cc7.(CVE-2019-19051)

  - A memory leak in the mlx5_fpga_conn_create_cq()     function in     drivers/net/ethernet/mellanox/mlx5/core/fpga/conn.c in     the Linux kernel before 5.3.11 allows attackers to     cause a denial of service (memory consumption) by     triggering mlx5_vector2eqn() failures, aka     CID-c8c2a057fdc7.(CVE-2019-19045)

  - A memory leak in the predicate_parse() function in     kernel/trace/trace_events_filter.c in the Linux kernel     through 5.3.11 allows attackers to cause a denial of     service (memory consumption), aka     CID-96c5c6e6a5b6.(CVE-2019-19072)

  - ** DISPUTED ** A memory leak in the spi_gpio_probe()     function in drivers/spi/spi-gpio.c in the Linux kernel     through 5.3.11 allows attackers to cause a denial of     service (memory consumption) by triggering     devm_add_action_or_reset() failures, aka     CID-d3b0ffa1d75d. NOTE: third parties dispute the     relevance of this because the system must have already     been out of memory before the probe     began.(CVE-2019-19070)

  - ** 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 through 5.3.8, f->fmt.sdr.reserved     is uninitialized in rcar_drif_g_fmt_sdr_cap in     drivers/media/platform/rcar_drif.c, which could cause a     memory disclosure problem.(CVE-2019-18786)

  - A memory leak in the cx23888_ir_probe() function in     drivers/media/pci/cx23885/cx23888-ir.c in the Linux     kernel through 5.3.11 allows attackers to cause a     denial of service (memory consumption) by triggering     kfifo_alloc() failures, aka     CID-a7b2df76b42b.(CVE-2019-19054)

  - An issue was discovered in drivers/media/platform/vivid     in the Linux kernel through 5.3.8. It is exploitable     for privilege escalation on some Linux distributions     where local users have /dev/video0 access, but only if     the driver happens to be loaded. There are multiple     race conditions during streaming stopping in this     driver (part of the V4L2 subsystem). These issues are     caused by wrong mutex locking in     vivid_stop_generating_vid_cap(),     vivid_stop_generating_vid_out(),     sdr_cap_stop_streaming(), and the corresponding     kthreads. At least one of these race conditions leads     to a use-after-free.(CVE-2019-18683)

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

Linux/Unix 主機上安裝了一個或多個受到弱點影響的套件，且供應商未提供可用的修補程式。

  - 在 Linux 核心 5.3 之前版本中，net/qrtr/tun.c 中的 qrtr_tun_write_iter() 函式存在記憶體流失問題，攻擊者可藉此造成拒絕服務 (記憶體消耗)，亦即 CID-a21b7f0cff19。(CVE-2019-19079)

請注意，Nessus 依賴供應商報告的套件存在。

The remote Ubuntu 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4258-1 advisory.

    It was discovered that the Atheros 802.11ac wireless USB device driver in the Linux kernel did not     properly validate device metadata. A physically proximate attacker could use this to cause a denial of     service (system crash). (CVE-2019-15099)

    It was discovered that a race condition existed in the Virtual Video Test Driver in the Linux kernel. An     attacker with write access to /dev/video0 on a system with the vivid module loaded could possibly use this     to gain administrative privileges. (CVE-2019-18683)

    It was discovered that the btrfs file system in the Linux kernel did not properly validate metadata,     leading to a NULL pointer dereference. An attacker could use this to specially craft a file system image     that, when mounted, could cause a denial of service (system crash). (CVE-2019-18885)

    It was discovered that the crypto subsystem in the Linux kernel did not properly deallocate memory in     certain error conditions. A local attacker could use this to cause a denial of service (kernel memory     exhaustion). (CVE-2019-19050, CVE-2019-19062)

    It was discovered that the RSI 91x WLAN device driver in the Linux kernel did not properly deallocate     memory in certain error conditions. A local attacker could use this to cause a denial of service (kernel     memory exhaustion). (CVE-2019-19071)

    It was discovered that the Broadcom Netxtreme HCA device driver in the Linux kernel did not properly     deallocate memory in certain error conditions. A local attacker could possibly use this to cause a denial     of service (kernel memory exhaustion). (CVE-2019-19077)

    It was discovered that the Atheros 802.11ac wireless USB device driver in the Linux kernel did not     properly deallocate memory in certain error conditions. A local attacker could possibly use this to cause     a denial of service (kernel memory exhaustion). (CVE-2019-19078)

    It was discovered that the Qualcomm IPC Router TUN device driver in the Linux kernel did not properly     deallocate memory in certain situations. A local attacker could possibly use this to cause a denial of     service (kernel memory exhaustion). (CVE-2019-19079)

    It was discovered that the AMD GPU device drivers in the Linux kernel did not properly deallocate memory     in certain error conditions. A local attacker could use this to possibly cause a denial of service (kernel     memory exhaustion). (CVE-2019-19082)

    Dan Carpenter discovered that the AppleTalk networking subsystem of the Linux kernel did not properly     handle certain error conditions, leading to a NULL pointer dereference. A local attacker could use this to     cause a denial of service (system crash). (CVE-2019-19227)

    Or Cohen discovered that the virtual console subsystem in the Linux kernel did not properly restrict     writes to unimplemented vcsu (unicode) devices. A local attacker could possibly use this to cause a denial     of service (system crash) or have other unspecified impacts. (CVE-2019-19252)

    It was discovered that the KVM hypervisor implementation in the Linux kernel did not properly handle ioctl     requests to get emulated CPUID features. An attacker with access to /dev/kvm could use this to cause a     denial of service (system crash). (CVE-2019-19332)

    It was discovered that the ext4 file system implementation in the Linux kernel did not properly handle     certain conditions. An attacker could use this to specially craft an ext4 file system that, when mounted,     could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-19767)

    It was discovered that the B2C2 FlexCop USB device driver in the Linux kernel did not properly validate     device metadata. A physically proximate attacker could use this to cause a denial of service (system     crash). (CVE-2019-15291)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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

Linux/Unix ホストには、ベンダーが提供するパッチが利用できない脆弱性の影響を受ける複数のパッケージがインストールされています。

  - 5.3 より前の Linux カーネルの net/qrtr/tun.c 内の qrtr_tun_write_iter() 関数のメモリリークにより、攻撃者が、サービス拒否 (メモリ消費) を引き起こす可能性があります (別名: CID-a21b7f0cff19)。(CVE-2019-19079)

Nessus は、ベンダーによって報告されたパッケージの存在に依存していることに注意してください。

遠端 Ubuntu 18.04 LTS 主機上安裝的一個套件受到 USN-4258-1 公告中所提及的多個弱點影響。

  - 在 Linux 核心 5.2.8 及其之前版本中，drivers/net/wireless/ath/ath10k/usb.c 存在透過端點描述元中的不完整位址造成的 NULL 指標解除參照問題。(CVE-2019-15099)

  - 在 Linux 核心 5.2.9 及之前版本中發現一個問題。在 drivers/media/usb/b2c2/flexcop-usb.c 驅動程式的 flexcop_usb_probe 函式中，存在一個由惡意 USB 裝置造成的 NULL 指標解除參照問題。
    (CVE-2019-15291)

  - 在 Linux 核心 5.3.8 及之前版本的 drivers/media/platform/vivid 中發現一個問題。在本機使用者擁有 /dev/video0 存取權 (但僅在剛好載入驅動程式時) 的某些 Linux 發行版本上，此弱點可遭到惡意利用以提升權限。在此驅動程式 (V4L2 子系統的一部分) 串流停止期間發生多個爭用情形。這些問題是由 vivid_stop_generated_vid_cap()、vivid_stop_generate_vid_out()、sdr_cap_stop_streaming() 及對應的 kthread 中錯誤的 mutex 鎖定所造成的。這些爭用情形中至少有一個會導致釋放後使用錯誤。(CVE-2019-18683)

  - 在 5.1 之前的 Linux 核心中，fs/btrfs/volumes.c 允許 btrfs_verify_dev_extents 透過特製的 btrfs 影像解除參照，這是因為 fs_devices-> devices 在 find_device 中處理不當所致，即 CID-09ba3bc9dd15。(CVE-2019-18885)

  - 在 Linux 核心 5.3.11 之前版本的 crypto/crypto_user_stat.c 中，crypto_reportstat() 函式內的記憶體洩漏可讓攻擊者透過觸發 crypto_reportstat_alg() 失敗，造成拒絕服務 (記憶體損毀)，此弱點亦稱 CID-c03b04dcdba1。(CVE-2019-19050)

  在 Linux 核心 5.3.11 之前版本的 crypto/crypto_user_base.c 中，crypto_report() 函式內的記憶體洩漏可讓攻擊者透過觸發 crypto_report_alg() 失敗 (亦即 CID-ffdde5932042)，造成拒絕服務 (記憶體損毀)。(CVE-2019-19062)

  - 在 5.3.11 及之前版本的 Linux 核心中，drivers/net/wireless/rsi/rsi_91x_mgmt.c 的 rsi_send_beacon() 函式存在記憶體洩漏，這會允許攻擊者透過觸發 rsi_prepare_beacon() 失敗情形引致拒絕服務 (記憶體消耗)，此弱點亦稱 CID-d563131ef23c。(CVE-2019-19071)

  - 在直至 5.3.11 之前版本的 Linux 核心中，drivers/infiniband/hw/bnxt_re/ib_verbs.c 的bnxt_re_create_srq() 函式中存在記憶體洩漏弱點，允許攻擊者透過觸發拷貝至 udata 失敗來造成拒絕服務 (記憶體消耗)，即 CID-4a9d46a9fe14。(CVE-2019-19077)

  - 在 5.3.11 及之前版本的 Linux 核心中，drivers/net/wireless/ath/ath10k/usb.c 的 ath10k_usb_hif_tx_sg() 函式存在一個記憶體洩漏問題，攻擊者可藉由觸發 usb_submit_urb() 失敗情形引致拒絕服務 (記憶體消耗)， 亦稱 CID-b8d17e7d93d2。(CVE-2019-19078)

  - 在 Linux 核心 5.3 之前版本中，net/qrtr/tun.c 中的 qrtr_tun_write_iter() 函式存在記憶體流失問題，攻擊者可藉此造成拒絕服務 (記憶體消耗)，亦即 CID-a21b7f0cff19。(CVE-2019-19079)

  -  在 5.3.11 及之前版本的 Linux 核心中，drivers/gpu/drm/amd/display/dc 下的 *create_resource_pool() 函式有記憶體洩漏弱點，攻擊者可藉此造成拒絕服務 (記憶體消耗)。這會影響 drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c 中的 dce120_create_resource_pool() 函式、drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c 中的 the dce110_create_resource_pool() 函式、drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c 中的 dce100_create_resource_pool() 函式、drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c 中的 dcn10_create_resource_pool() 函式，以及 drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c, aka CID-104c307147ad 中的 dce112_create_resource_pool() 函式。(CVE-2019-19082)

  - 在 Linux 核心 5.1 之前版本中，因為 register_snap_client 可能傳回 NULL，AppleTalk 子系統中可能會發生 NULL 指標解除參照。這會導致 net/appletalk/aarp.c 和 net/appletalk/ddp.c 中發生拒絕服務，unregister_snap_client 即為一例，即 CID-9804501fa122。(CVE-2019-19227)

  - 在 5.3.13 之前的 Linux 核心中，drivers/tty/vt/vc_screen.c 的 vcs_write  未防止對 vcsu 裝置的寫入存取，此弱點亦稱 CID-0c9acb1af77a。(CVE-2019-19252)

  - 在 Linux 核心 3.13 至 5.4 版中，Linux 核心的 KVM Hypervisor 處理「KVM_GET_EMULATED_CPUID」ioctl(2) 要求以取得 KVM Hypervisor 模擬的 CPUID 功能時，發現一個超出邊界記憶體寫入問題。能夠存取「/dev/kvm」裝置的使用者或處理序可利用此缺陷損毀系統，進而導致拒絕服務。(CVE-2019-19332)

  - 5.4.2 之前的 Linux 核心會不當處理 ext4_expand_extra_isize，此問題與 fs/ext4/inode.c 和 fs/ext4/super.c 有關，亦稱 CID-4ea99936a163；__ ext4_expand_extra_isize 和 ext4_xattr_set_entry 中的釋放後使用錯誤即為一例。(CVE-2019-19767)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

Linux/Unix 主机中安装的一个或多个程序包受到一个漏洞影响，而供应商没有提供补丁程序。

  - 在 5.3 之前的 Linux 内核中，net/qrtr/tun.c 的 qrtr_tun_write_iter() 函数中存在内存泄露漏洞，该漏洞允许攻击者造成拒绝服务（内存消耗），也称为 CID-a21b7f0cff19。(CVE-2019-19079)

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

ID	Name	Product	Family	Published	Updated	Severity
133354	Ubuntu 18.04 LTS：Linux 内核漏洞 (USN-4258-1)	Nessus	Ubuntu Local Security Checks	1/30/2020	8/27/2024	high
133354	Ubuntu 18.04 LTS : Linux カーネル脆弱性 (USN-4258-1)	Nessus	Ubuntu Local Security Checks	1/30/2020	8/27/2024	high
246737	Linux Distros Unpatched Vulnerability : CVE-2019-19079	Nessus	Misc.	8/9/2025	9/5/2025	high
132796	EulerOS Virtualization for ARM 64 3.0.5.0 : kernel (EulerOS-SA-2020-1042)	Nessus	Huawei Local Security Checks	1/13/2020	4/1/2024	critical
246737	Linux Distros 未修補的弱點：CVE-2019-19079	Nessus	Misc.	8/9/2025	9/5/2025	high
132605	EulerOS 2.0 SP8 : kernel (EulerOS-SA-2020-1012)	Nessus	Huawei Local Security Checks	1/2/2020	4/1/2024	critical
133354	Ubuntu 18.04 LTS : Linux kernel vulnerabilities (USN-4258-1)	Nessus	Ubuntu Local Security Checks	1/30/2020	8/27/2024	high
246737	Linux Distros のパッチ未適用の脆弱性: CVE-2019-19079	Nessus	Misc.	8/9/2025	9/5/2025	high
133354	Ubuntu 18.04 LTS：Linux 核心弱點 (USN-4258-1)	Nessus	Ubuntu Local Security Checks	1/30/2020	8/27/2024	high
246737	Linux Distros 未修补的漏洞：CVE-2019-19079	Nessus	Misc.	8/9/2025	9/5/2025	high

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