CVE-2023-1872

Description

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.

References

https://security.netapp.com/advisory/ntap-20230601-0002/

https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=da24142b1ef9fd5d36b76e36bab328a5b27523e8

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=08681391b84da27133deefaaddefd0acfa90c2be

http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3