CVE-2026-72160: Linux kernel · ocfs2: reject dinodes with non-canonical i_mode type
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 8.8 High · fixed in 5.15.0-1117.124~20.04.1 : patch Linux kernel soon.
Data as of 26 Oct 2026, 17:16 UTC
- EPSS
- 0.6% chance of exploitation in 30 days – higher than 50% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 5.15.0-1117.124~20.04.1, 5.15.0-1123.132~20.04.1, 5.15.0-1122.131~20.04.1 +42
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 15 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A patch is available and should be applied to affected Linux kernel versions to address this vulnerability. The patch enforces strict validation of OCFS2 dinode metadata to reject malformed i_mode values and other structural inconsistencies. Users should update their Linux kernel to a fixed version as provided by their distribution vendor. No additional mitigation is required beyond applying the official fix.
Description
A vulnerability in the Linux kernel's OCFS2 filesystem was resolved by adding stricter validation of inode metadata. Specifically, the fix rejects dinodes with non-canonical i_mode values that do not correspond to standard POSIX file types, preventing malformed on-disk metadata from being processed. This vulnerability could allow malformed inode data to be accepted, potentially leading to system compromise. The issue affects specific Linux kernel versions listed and has a high CVSS score indicating severe impact on confidentiality, integrity, and availability. A patch is available to address this flaw.
References
- nvd.nist.gov/vuln/detail/CVE-2026-72160 (opens in a new tab)
- git.kernel.org/stable/c/157d31ef45038d89cd19620105e082d43c8e41e0 (opens in a new tab)
- git.kernel.org/stable/c/2e3aac33988ef4e4170141db8e995693ea38357c (opens in a new tab)
- git.kernel.org/stable/c/4db3b6a2a8ecf2a89d26a4090ace4072c6fad050 (opens in a new tab)
- git.kernel.org/stable/c/5366a017099c6a3c443be908a05f26fd72af12a1 (opens in a new tab)
- git.kernel.org/stable/c/82afe13558354390d8a592a5334d5f4fd72c0e5c (opens in a new tab)
- git.kernel.org/stable/c/a5b555bcabbb0aff8745ad181768eaf9d964c1ee (opens in a new tab)
- git.kernel.org/stable/c/b858f2d57cfc9d57ce61b86051d603dc0ebccd40 (opens in a new tab)
- git.kernel.org/stable/c/fb024ea29f6cb1f01745e5f2e31646f3acb9aa6f (opens in a new tab)
- ubuntu.com/security/CVE-2026-72160 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-72160 (opens in a new tab)
- git.kernel.org/linus/5366a017099c6a3c443be908a05f26fd72af12a1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8876-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8878-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8879-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8877-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8875-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8888-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8889-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8887-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8886-1 (opens in a new tab)