CVE-2022-49416

HIGH EPSS 16.3%
Published Feb 26, 20251y ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Feb 26, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix use-after-free in chanctx code In ieee80211_vif_use_reserved_context(), when we have an old context and the new context's replace_state is set to IEEE80211_CHANCTX_REPLACE_NONE, we free the old context in ieee80211_vif_use_reserved_reassign(). Therefore, we cannot check the old_ctx anymore, so we should set it to NULL after this point. However, since the new_ctx replace state is clearly not IEEE80211_CHANCTX_REPLACES_OTHER, we're not going to do anything else in this function and can just return to avoid accessing the freed old_ctx.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
16.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 8

VendorProductVersionRange
linuxlinux_kernel*≥3.17  –  <4.9.318
linuxlinux_kernel*≥4.10  –  <4.14.283
linuxlinux_kernel*≥4.15  –  <4.19.247
linuxlinux_kernel*≥4.20  –  <5.4.198
linuxlinux_kernel*≥5.5  –  <5.10.121
linuxlinux_kernel*≥5.11  –  <5.15.46
linuxlinux_kernel*≥5.16  –  <5.17.14
linuxlinux_kernel*≥5.18  –  <5.18.3

References 9

  • git.kernel.org https://git.kernel.org/stable/c/265bec4779a38b65e86a25120370f200822dfa76
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2965c4cdf7ad9ce0796fac5e57debb9519ea721e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4ba81e794f0fad6234f644c2da1ae14d5b95e1c4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4f05a9e15edcdf5b97e0d86ab6ecd5f187289f6c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6118bbdf69f4718b02d26bbcf2e497eb66004331
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/82c8e7bbdd06c7ed58e22450cc5b37f33a25bb2c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/88cc8f963febe192d6ded9df7217f92f380b449a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9f1e5cc85ad77e52f54049a94db0407445ae2a34
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b79110f2bf6022e60e590d2e094728a8eec3e79e
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/265bec4779a38b65e86a25120370f200822dfa76
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2965c4cdf7ad9ce0796fac5e57debb9519ea721e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4ba81e794f0fad6234f644c2da1ae14d5b95e1c4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4f05a9e15edcdf5b97e0d86ab6ecd5f187289f6c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6118bbdf69f4718b02d26bbcf2e497eb66004331
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/82c8e7bbdd06c7ed58e22450cc5b37f33a25bb2c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/88cc8f963febe192d6ded9df7217f92f380b449a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9f1e5cc85ad77e52f54049a94db0407445ae2a34
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b79110f2bf6022e60e590d2e094728a8eec3e79e
    Patch