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CVE-2021-38604

Published: 12 August 2021

In librt in the GNU C Library (aka glibc) through 2.34, sysdeps/unix/sysv/linux/mq_notify.c mishandles certain NOTIFY_REMOVED data, leading to a NULL pointer dereference. NOTE: this vulnerability was introduced as a side effect of the CVE-2021-33574 fix.

Priority

Medium

CVSS 3 base score: 7.5

Status

Package Release Status
eglibc
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Not vulnerable

upstream Needs triage

xenial Does not exist

glibc
Launchpad, Ubuntu, Debian
bionic Not vulnerable

focal Not vulnerable

hirsute Ignored
(reached end-of-life)
impish Not vulnerable
(2.34-0ubuntu3)
jammy Not vulnerable
(2.34-0ubuntu3)
trusty Does not exist

upstream Pending
(2.35)
xenial Not vulnerable

Patches:
upstream: https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=4cc79c217744743077bf7a0ec5e0a4318f1e6641
upstream: https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=b805aebd42364fe696e417808a700fdb9800c9e8

Notes

AuthorNote
sbeattie
21.04 and earlier are not affected due to the fix for
CVE-2021-33574 having not been introduced yet.

References

Bugs