linux: A use-after-free vulnerability in the Linux Kernel io_uring system can be exploited to achieve local privilege escala...
CVE-2023-1872 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-1872, released April 12, 2023. It is not reported as exploited. Patch Radar priority: High.
A use-after-free vulnerability in the Linux Kernel io_uring system can be exploited to achieve local privilege escalation. The io_file_get_fixed function lacks the presence of ctx->uring_lock which can lead to a Use-After-Free vulnerability due a race condition with fixed files getting unregistered. We recommend upgrading past commit da24142b1ef9fd5d36b76e36bab328a5b27523e8.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 12.15 (bookworm) | 5.17.3-1 | DEBIAN-CVE-2023-1872 | Apr 12, 2023 |
| linux · Debian 13.5 (trixie) | 5.17.3-1 | DEBIAN-CVE-2023-1872 | Apr 12, 2023 |
| linux · Debian 14 | 5.17.3-1 | DEBIAN-CVE-2023-1872 | Apr 12, 2023 |
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