CVE-2022-24122 Information

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.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

https://www.openwall.com/lists/oss-security/2022/01/29/1 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f9d87929d451d3e649699d0f1d74f71f77ad38f5 https://github.com/torvalds/linux/commit/f9d87929d451d3e649699d0f1d74f71f77ad38f5 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HSR3AI2IQGRKZCHNKF6S25JGDKUEAWWL/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VVSZKUJAZ2VN6LJ35J2B6YD6BOPQTU3B/ https://security.netapp.com/advisory/ntap-20220221-0001/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8