Home/CVE/kernel/ucount.c in the Linux kernel 5.14 through 5.16.4, when unprivileged user namespaces are enabled, allows a use-aft
CVE

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-aft

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.

HIGH · CVSS 7.8 EPSS 0.00122
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-416Use After Free
▤

Affected Products & Versions

11
linux kernel>= 5.14 and < 5.15.19
linux kernel>= 5.16 and < 5.16.5
netapp h410c firmwareall versions
netapp h300s firmwareall versions
netapp h500s firmwareall versions
netapp h700s firmwareall versions
netapp h300e firmwareall versions
netapp h500e firmwareall versions
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD29 Jan 2022 · 10:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

2
usnUSN-5278-1
msrcCVE-2022-24122
🔗

References & Sources

6
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f9d87929d451d3e649699d0f1d74f71f77ad38f5Mailing ListPatchVendor Advisory
https://github.com/torvalds/linux/commit/f9d87929d451d3e649699d0f1d74f71f77ad38f5PatchThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HSR3AI2IQGRKZCHNKF6S25JGDKUEAWWL/Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VVSZKUJAZ2VN6LJ35J2B6YD6BOPQTU3B/Mailing List
https://security.netapp.com/advisory/ntap-20220221-0001/Third Party Advisory
https://www.openwall.com/lists/oss-security/2022/01/29/1ExploitMailing ListThird Party Advisory
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