linux: In l2cap_chan_put of l2cap_core, there is a possible use after free due to improper locking
CVE-2022-20566 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-20566, released December 16, 2022. It is not reported as exploited. Patch Radar priority: High.
In l2cap_chan_put of l2cap_core, there is a possible use after free due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-165329981References: Upstream kernel
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 12.15 (bookworm) | 5.18.16-1 | DEBIAN-CVE-2022-20566 | Dec 16, 2022 |
| linux · Debian 13.5 (trixie) | 5.18.16-1 | DEBIAN-CVE-2022-20566 | Dec 16, 2022 |
| linux · Debian 14 | 5.18.16-1 | DEBIAN-CVE-2022-20566 | Dec 16, 2022 |
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