UBUNTU-CVE-2022-24122
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.
02 / AFFECTED SOFTWARE
Affected packages
23 explicit affected versions
6 explicit affected versions
10 explicit affected versions
44 explicit affected versions
16 explicit affected versions
4 explicit affected versions
38 explicit affected versions
13 explicit affected versions
21 explicit affected versions
33 explicit affected versions
43 explicit affected versions
10 explicit affected versions
50 explicit affected versions
7 explicit affected versions
9 explicit affected versions
4 explicit affected versions
7 explicit affected versions
4 explicit affected versions
12 explicit affected versions
7 explicit affected versions
9 explicit affected versions
29 explicit affected versions
5 explicit affected versions
6 explicit affected versions
12 explicit affected versions
10 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/f9d87929d451d3e649699d0f1d74f71f77ad38f5
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c54b245d011855ea91c5beff07f1db74143ce614
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f9d87929d451d3e649699d0f1d74f71f77ad38f5
- https://ubuntu.com/security/CVE-2022-24122
- https://ubuntu.com/security/notices/USN-5278-1
- https://www.cve.org/CVERecord?id=CVE-2022-24122
- https://www.openwall.com/lists/oss-security/2022/01/29/1