CVE-2026-72176mm/damon/sysfs-schemes: put stats for scheme_add_dirs() internal error
- —Not scoredno CVSS score yet
- 0.21%Exploitation in 30 daysEPSS · top 89% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs-schemes: put stats for scheme_add_dirs() internal error damon_sysfs_scheme_add_dirs() setup the tried_regions directory after the stats directory setup is completed. When the tried_regions directory setup is failed, the setup function ensures the reference for the tried regions directory is released. Hence the error path should put references on setup succeeded directory objects, starting from the stats directory. However, the error path is putting the tried_regions directory instead of the stats directory. As a direct result, the stats directory object is leaked. Worse yet, if the tried_regions directory setup failed from the initial allocation, the scheme->tried_regions field remains uninitialized. The following kobject_put(&scheme->tried_regions->kobj) call in the error path will dereference the uninitialized memory. The setup failures should not be common. But once it happens, the consequence is quite bad. Fix this issue by correctly putting the stats directory instead of the tried_regions directory. The issue was discovered [1] by Sashiko.
Timeline
ID reserved
By Linux
- 6 days later
· 6 days later
Published
- 2 days later
· 2 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.21% · top 89% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 5181b75f438d2e5b7f27bf48c6ea88a87c2882b7 – < 50a753171d255895e5dd41566986b48dcec06f31
- affected 5181b75f438d2e5b7f27bf48c6ea88a87c2882b7 – < f63d6e5ba72aeacdee4fddc902bd7616cd62b919
- affected 5181b75f438d2e5b7f27bf48c6ea88a87c2882b7 – < 40a04601a3f66cabd6629c258a07af645a658865
- affected 5181b75f438d2e5b7f27bf48c6ea88a87c2882b7 – < 6b6b5d7c2c957136b92c00b77b7175259f13082b
- affected 5181b75f438d2e5b7f27bf48c6ea88a87c2882b7 – < 05ea83ee88ca70f8932906d9f2617ff996f45b50
- affected 6.2
- unaffected < 6.2
- unaffected 6.6.145 – ≤ 6.6.*
- unaffected 6.12.97 – ≤ 6.12.*
- unaffected 6.18.40 – ≤ 6.18.*
- unaffected 7.1.5 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References5
- https://git.kernel.org/stable/c/50a753171d255895e5dd41566986b48dcec06f31 (opens in a new tab)
- https://git.kernel.org/stable/c/f63d6e5ba72aeacdee4fddc902bd7616cd62b919 (opens in a new tab)
- https://git.kernel.org/stable/c/40a04601a3f66cabd6629c258a07af645a658865 (opens in a new tab)
- https://git.kernel.org/stable/c/6b6b5d7c2c957136b92c00b77b7175259f13082b (opens in a new tab)
- https://git.kernel.org/stable/c/05ea83ee88ca70f8932906d9f2617ff996f45b50 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-58934 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-72176)Record last updated .