Vulnerability · Published Jan 29, 2022 · Assigned by mitre
CVE-2022-24122
High 7.8
In plain English
A high-severity security flaw in the linux package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 63% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.8High
Exploit odds (30 days)1.0%top 36.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack tooling1Public PoC
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | linux | 5.15.15-2 | DEBIAN-CVE-2022-24122 |
| Debian:13 | linux | 5.15.15-2 | DEBIAN-CVE-2022-24122 |
| Debian:14 | linux | 5.15.15-2 | DEBIAN-CVE-2022-24122 |
Affected products (as reported)
References
- https://github.com/torvalds/linux/commit/f9d87929d451d3e649699d0f1d74f71f77ad38f5 x_refsource_MISC
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f9d87929d451d3e649699d0f1d74f71f77ad38f5 x_refsource_MISC
- https://www.openwall.com/lists/oss-security/2022/01/29/1 x_refsource_MISC
- FEDORA-2022-57fd391bf8 vendor-advisory, x_refsource_FEDORA
- FEDORA-2022-667a5c6e26 vendor-advisory, x_refsource_FEDORA
- https://security.netapp.com/advisory/ntap-20220221-0001/ x_refsource_CONFIRM