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Amazon Linux AMI 2: CVE-2024-46798: Security patch for kernel (Multiple Advisories)

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Amazon Linux AMI 2: CVE-2024-46798: Security patch for kernel (Multiple Advisories)

Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
09/18/2024
Created
10/03/2024
Added
10/03/2024
Modified
01/30/2025

Description

In the Linux kernel, the following vulnerability has been resolved: ASoC: dapm: Fix UAF for snd_soc_pcm_runtime object When using kernel with the following extra config, - CONFIG_KASAN=y - CONFIG_KASAN_GENERIC=y - CONFIG_KASAN_INLINE=y - CONFIG_KASAN_VMALLOC=y - CONFIG_FRAME_WARN=4096 kernel detects that snd_pcm_suspend_all() access a freed 'snd_soc_pcm_runtime' object when the system is suspended, which leads to a use-after-free bug: [ 52.047746] BUG: KASAN: use-after-free in snd_pcm_suspend_all+0x1a8/0x270 [ 52.047765] Read of size 1 at addr ffff0000b9434d50 by task systemd-sleep/2330 [ 52.047785] Call trace: [ 52.047787]dump_backtrace+0x0/0x3c0 [ 52.047794]show_stack+0x34/0x50 [ 52.047797]dump_stack_lvl+0x68/0x8c [ 52.047802]print_address_description.constprop.0+0x74/0x2c0 [ 52.047809]kasan_report+0x210/0x230 [ 52.047815]__asan_report_load1_noabort+0x3c/0x50 [ 52.047820]snd_pcm_suspend_all+0x1a8/0x270 [ 52.047824]snd_soc_suspend+0x19c/0x4e0 The snd_pcm_sync_stop() has a NULL check on 'substream->runtime' before making any access. So we need to always set 'substream->runtime' to NULL everytime we kfree() it.

Solution(s)

  • amazon-linux-ami-2-upgrade-bpftool
  • amazon-linux-ami-2-upgrade-bpftool-debuginfo
  • amazon-linux-ami-2-upgrade-kernel
  • amazon-linux-ami-2-upgrade-kernel-debuginfo
  • amazon-linux-ami-2-upgrade-kernel-debuginfo-common-aarch64
  • amazon-linux-ami-2-upgrade-kernel-debuginfo-common-x86_64
  • amazon-linux-ami-2-upgrade-kernel-devel
  • amazon-linux-ami-2-upgrade-kernel-headers
  • amazon-linux-ami-2-upgrade-kernel-livepatch-5-10-226-214-879
  • amazon-linux-ami-2-upgrade-kernel-livepatch-5-15-167-112-165
  • amazon-linux-ami-2-upgrade-kernel-tools
  • amazon-linux-ami-2-upgrade-kernel-tools-debuginfo
  • amazon-linux-ami-2-upgrade-kernel-tools-devel
  • amazon-linux-ami-2-upgrade-perf
  • amazon-linux-ami-2-upgrade-perf-debuginfo
  • amazon-linux-ami-2-upgrade-python-perf
  • amazon-linux-ami-2-upgrade-python-perf-debuginfo

References

  • https://attackerkb.com/topics/cve-2024-46798
  • AL2/ALASKERNEL-5.10-2024-070
  • AL2/ALASKERNEL-5.15-2024-055
  • AL2/ALASKERNEL-5.4-2024-086
  • CVE - 2024-46798
  • 查看数 693
  • 已创建
  • 最后回复

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