Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: validate IEs in cfg80211_wext_siwgenie() The KASAN allocation trace shows that a malformed IE buffer is stored via SIOCSIWGENIE (cfg80211_wext_siwgenie()) without any validation. The crash trace shows that a subsequent SIOCSIWESSID triggers a connection attempt which calls cfg80211_sme_get_conn_ies() to process the stored IE buffer, causing: - An out-of-bounds read in skip_ie() which reads ies[pos+1] (the length byte) past the end of the 1-byte buffer. - An integer underflow in the memcpy size argument when offs returned by ieee80211_ie_split() exceeds ies_len, causing unsigned subtraction to wrap to SIZE_MAX and triggering a fortify panic. Fix this by validating the IE buffer in cfg80211_wext_siwgenie() before storing it. [drop unnecessary ie_len check, update commit message]
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected f21293549f60f88c74fcb9944737f11048896dc4 before 269498ce6c1e2132b072aa0c8660404926008f03; affected f21293549f60f88c74fcb9944737f11048896dc4 before 685082f4be77f4657b498ebbe9f942ef65c492cf; affected f21293549f60f88c74fcb9944737f11048896dc4 before 8b921a8993469a3482e0c67b5ce5cb6ce93f5f61; affected f21293549f60f88c74fcb9944737f11048896dc4 before d01f1600e8b075aa17adb751ac9881bb6ee40dcc; affected f21293549f60f88c74fcb9944737f11048896dc4 before c970879e03b23a27df42caf7ba506485a165fb96; affected f21293549f60f88c74fcb9944737f11048896dc4 before 01cc395cecfaa73134d39fb9a401d9605d8bb2c5; affected f21293549f60f88c74fcb9944737f11048896dc4 before a2f5286ca4f304d3fd469f01b96b518608912a5c |
| Linux / Linux | affected 2.6.32; unaffected 0 before 2.6.32; unaffected 5.10.271 through 5.10.*; unaffected 5.15.222 through 5.15.*; unaffected 6.1.189 through 6.1.*; unaffected 6.6.158 through 6.6.*; unaffected 6.12.111 through 6.12.*; unaffected 6.18.53 through 6.18.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/269498ce6c1e2132b072aa0c8660404926008f03
- https://git.kernel.org/stable/c/685082f4be77f4657b498ebbe9f942ef65c492cf
- https://git.kernel.org/stable/c/8b921a8993469a3482e0c67b5ce5cb6ce93f5f61
- https://git.kernel.org/stable/c/d01f1600e8b075aa17adb751ac9881bb6ee40dcc
- https://git.kernel.org/stable/c/c970879e03b23a27df42caf7ba506485a165fb96
- https://git.kernel.org/stable/c/01cc395cecfaa73134d39fb9a401d9605d8bb2c5
- https://git.kernel.org/stable/c/a2f5286ca4f304d3fd469f01b96b518608912a5c