Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f before 88cc8f963febe192d6ded9df7217f92f380b449a; affected 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f before 4ba81e794f0fad6234f644c2da1ae14d5b95e1c4; affected 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f before 9f1e5cc85ad77e52f54049a94db0407445ae2a34; affected 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f before 265bec4779a38b65e86a25120370f200822dfa76; affected 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f before 6118bbdf69f4718b02d26bbcf2e497eb66004331; affected 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f before b79110f2bf6022e60e590d2e094728a8eec3e79e; affected 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f before 82c8e7bbdd06c7ed58e22450cc5b37f33a25bb2c; affected 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f before 4f05a9e15edcdf5b97e0d86ab6ecd5f187289f6c; affected 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f before 2965c4cdf7ad9ce0796fac5e57debb9519ea721e |
| Linux / Linux | affected 3.17; unaffected 0 before 3.17; unaffected 4.9.318 through 4.9.*; unaffected 4.14.283 through 4.14.*; unaffected 4.19.247 through 4.19.*; unaffected 5.4.198 through 5.4.*; unaffected 5.10.121 through 5.10.*; unaffected 5.15.46 through 5.15.*; unaffected 5.17.14 through 5.17.*; unaffected 5.18.3 through 5.18.*; unaffected 5.19 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/88cc8f963febe192d6ded9df7217f92f380b449a
- https://git.kernel.org/stable/c/4ba81e794f0fad6234f644c2da1ae14d5b95e1c4
- https://git.kernel.org/stable/c/9f1e5cc85ad77e52f54049a94db0407445ae2a34
- https://git.kernel.org/stable/c/265bec4779a38b65e86a25120370f200822dfa76
- https://git.kernel.org/stable/c/6118bbdf69f4718b02d26bbcf2e497eb66004331
- https://git.kernel.org/stable/c/b79110f2bf6022e60e590d2e094728a8eec3e79e
- https://git.kernel.org/stable/c/82c8e7bbdd06c7ed58e22450cc5b37f33a25bb2c
- https://git.kernel.org/stable/c/4f05a9e15edcdf5b97e0d86ab6ecd5f187289f6c
- https://git.kernel.org/stable/c/2965c4cdf7ad9ce0796fac5e57debb9519ea721e
ADP enrichment
No English description supplied.
No references supplied.