CVE-2022-48994

MEDIUM EPSS 14.4%
Published Oct 21, 20241y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Oct 21, 2024 1y ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: Fix function prototype mismatch in snd_seq_expand_var_event With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG), indirect call targets are validated against the expected function pointer prototype to make sure the call target is valid to help mitigate ROP attacks. If they are not identical, there is a failure at run time, which manifests as either a kernel panic or thread getting killed. seq_copy_in_user() and seq_copy_in_kernel() did not have prototypes matching snd_seq_dump_func_t. Adjust this and remove the casts. There are not resulting binary output differences. This was found as a result of Clang's new -Wcast-function-type-strict flag, which is more sensitive than the simpler -Wcast-function-type, which only checks for type width mismatches.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
14.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 13

VendorProductVersionRange
linuxlinux_kernel* <4.9.336
linuxlinux_kernel*≥4.10  –  <4.14.302
linuxlinux_kernel*≥4.15  –  <4.19.269
linuxlinux_kernel*≥4.20  –  <5.4.227
linuxlinux_kernel*≥5.5  –  <5.10.159
linuxlinux_kernel*≥5.11  –  <5.15.83
linuxlinux_kernel*≥5.16  –  <6.0.13
linuxlinux_kernel6.1any
linuxlinux_kernel6.1any
linuxlinux_kernel6.1any
linuxlinux_kernel6.1any
linuxlinux_kernel6.1any
linuxlinux_kernel6.1any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/05530ef7cf7c7d700f6753f058999b1b5099a026
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/13ee8fb5410b740c8dd2867d3557c7662f7dda2d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/15c42ab8d43acb73e2eba361ad05822c0af0ecfa
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2f46e95bf344abc4e74f8158901d32a869e0adb6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/63badfed200219ca656968725f1a43df293ac936
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b38486e82ecb9f3046e0184205f6b61408fc40c9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e385360705a0b346bdb57ce938249175d0613b8a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fccd454129f6a0739651f7f58307cdb631fd6e89
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/05530ef7cf7c7d700f6753f058999b1b5099a026
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/13ee8fb5410b740c8dd2867d3557c7662f7dda2d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/15c42ab8d43acb73e2eba361ad05822c0af0ecfa
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2f46e95bf344abc4e74f8158901d32a869e0adb6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/63badfed200219ca656968725f1a43df293ac936
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b38486e82ecb9f3046e0184205f6b61408fc40c9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e385360705a0b346bdb57ce938249175d0613b8a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fccd454129f6a0739651f7f58307cdb631fd6e89
    Patch