CVE-2022-50533
N/A
N/A
Summary
In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: mlme: fix null-ptr deref on failed assoc
If association to an AP without a link 0 fails, then we crash in tracing because it assumes that either ap_mld_addr or link 0 BSS is valid, since we clear sdata->vif.valid_links and then don't add the ap_mld_addr to the struct.
Since we clear also sdata->vif.cfg.ap_addr, keep a local copy of it and assign it earlier, before clearing valid_links, to fix this.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 81151ce462e533551f3284bfdb8e0f461c9220e6 < c695dfba8dfb82dc7ace4f22be088916cbf621ca | affected |
| Linux | Linux | 81151ce462e533551f3284bfdb8e0f461c9220e6 < bb7743955a929e44b308cc3f63f8cc03873c1bee | affected |
| Linux | Linux | 81151ce462e533551f3284bfdb8e0f461c9220e6 < 78a6a43aaf87180ec7425a2a90468e1b4d09a1ec | affected |
| Linux | Linux | 6.0 | affected |
| Linux | Linux | 0 < 6.0 | unaffected |
| Linux | Linux | 6.0.16 <= 6.0.* | unaffected |
| Linux | Linux | 6.1.2 <= 6.1.* | unaffected |
| Linux | Linux | 6.2 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/c695dfba8dfb82dc7ace4f22be088916cbf621ca
- https://git.kernel.org/stable/c/bb7743955a929e44b308cc3f63f8cc03873c1bee
- https://git.kernel.org/stable/c/78a6a43aaf87180ec7425a2a90468e1b4d09a1ec
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