CVE-2022-49416
"Linux WiFi mac80211 Use-After-Free Vulnerability"
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.
INFO
Published Date :
Feb. 26, 2025, 7:01 a.m.
Last Modified :
March 24, 2025, 7:57 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-49416.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-49416 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-49416 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Mar. 24, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.198 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.121 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.46 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 5.17.14 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.18 up to (excluding) 5.18.3 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.10 up to (excluding) 4.14.283 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.17 up to (excluding) 4.9.318 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.247 Added Reference Type kernel.org: https://git.kernel.org/stable/c/265bec4779a38b65e86a25120370f200822dfa76 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/2965c4cdf7ad9ce0796fac5e57debb9519ea721e Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/4ba81e794f0fad6234f644c2da1ae14d5b95e1c4 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/4f05a9e15edcdf5b97e0d86ab6ecd5f187289f6c Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/6118bbdf69f4718b02d26bbcf2e497eb66004331 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/82c8e7bbdd06c7ed58e22450cc5b37f33a25bb2c Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/88cc8f963febe192d6ded9df7217f92f380b449a Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/9f1e5cc85ad77e52f54049a94db0407445ae2a34 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/b79110f2bf6022e60e590d2e094728a8eec3e79e Types: Patch -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Feb. 27, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-416 -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 26, 2025
Action Type Old Value New Value Added 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. Added Reference https://git.kernel.org/stable/c/265bec4779a38b65e86a25120370f200822dfa76 Added Reference https://git.kernel.org/stable/c/2965c4cdf7ad9ce0796fac5e57debb9519ea721e Added Reference https://git.kernel.org/stable/c/4ba81e794f0fad6234f644c2da1ae14d5b95e1c4 Added Reference https://git.kernel.org/stable/c/4f05a9e15edcdf5b97e0d86ab6ecd5f187289f6c Added Reference https://git.kernel.org/stable/c/6118bbdf69f4718b02d26bbcf2e497eb66004331 Added Reference https://git.kernel.org/stable/c/82c8e7bbdd06c7ed58e22450cc5b37f33a25bb2c Added Reference https://git.kernel.org/stable/c/88cc8f963febe192d6ded9df7217f92f380b449a Added Reference https://git.kernel.org/stable/c/9f1e5cc85ad77e52f54049a94db0407445ae2a34 Added Reference https://git.kernel.org/stable/c/b79110f2bf6022e60e590d2e094728a8eec3e79e
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-49416 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-49416
weaknesses.