CVE-2023-52646: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: aio: fix mremap after fork null-deref Commit e4a0d3e720e7 ("aio: Make it possible to remap aio ring") introduced a null-deref if mremap is called on an old aio mapping after fork as mm->ioctx_table will be set to NULL. [jmoyer@redhat.com: fix 80 column issue]

Affected products

• Linux Linux Kernel: from 3.19, before 4.14.306 (fixed in 4.14.306); from 4.15, before 4.19.273 (fixed in 4.19.273); from 4.20, before 5.4.232 (fixed in 5.4.232); from 5.5, before 5.10.169 (fixed in 5.10.169); from 5.11, before 5.15.95 (fixed in 5.15.95); from 5.16, before 6.1.13 (fixed in 6.1.13); …

Published 2024-04-26. Last modified 2026-06-17.