CVE-2023-1872 — Use After Free in Kernel
Severity
7.0HIGHNVD
OSV7.8OSV4.7
EPSS
0.0%
top 93.10%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedApr 12
Latest updateAug 19
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.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.0 | Impact: 5.9
Affected Packages11 packages
Also affects: Debian Linux 10.0