CVE-2022-24122

Description

kernel/ucount.c in the Linux kernel 5.14 through 5.16.4, when unprivileged user namespaces are enabled, allows a use-after-free and privilege escalation because a ucounts object can outlive its namespace.

Affected Platforms

Weakness Type

CWE-416

References

• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f9d87…
• https://github.com/torvalds/linux/commit/f9d87929d451d3e649699d0f1d74f71f77ad38f…
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
• https://security.netapp.com/advisory/ntap-20220221-0001/
• https://www.openwall.com/lists/oss-security/2022/01/29/1