- —Not scoredno CVSS score yet
- 0.20%Exploitation in 30 daysEPSS · top 90% 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/vaddr: avoid hw-driven pte updates during damon_hugetlb_mkold() damon_hugetlb_mkold() reads the page table entry into a local variable, unsets the accessed bit in the variable, and updates the page table entry with the updated variable value. If hardware updates the same page table entry in parallel, the hw updates could be lost. For example, hardware-updated dirty bits might be lost. Avoid the parallel updates by clearing the page table entry when reading it together, using huge_ptep_get_and_clear(). If a parallel write to the memory is made after the clearing, the hw will see the page table entry is cleared, trigger page fault and wait until it is handled. The page fault handling will wait for damon_hugetlb_mkold() due to the page table lock. Because hugetlbfs is an in-memory file system and hugetlb pages cannot be reclaimed, no critical issue is expected to my best knowledge. But definitely this is a nasty bug that should be fixed sooner rather than later. The issue was discovered [1] by Sashiko.
Timeline
ID reserved
By Linux
- 23 days later
· 23 days later
Published
- 3 days later
· 3 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)
- 0.20% · top 90% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 49f4203aae06ba9d67b500c90339b262b0a52637 – < 7ed1062d154ec2401f2c894fd6858598bb1160b6
- affected 49f4203aae06ba9d67b500c90339b262b0a52637 – < 00457981327c80bcc56e07d4714fe189337a19fa
- affected 49f4203aae06ba9d67b500c90339b262b0a52637 – < e59cb7eda7c06334a0faf5aa44adb6acf2a1287a
- affected 49f4203aae06ba9d67b500c90339b262b0a52637 – < 6e74ffc9ecf6ec24eee117150da78a1102be74c5
- affected 49f4203aae06ba9d67b500c90339b262b0a52637 – < 39c0ceedd54557bdc1542de08d22b2ed33e534e4
- affected 5.17
- unaffected < 5.17
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.112 – ≤ 6.12.*
- unaffected 6.18.55 – ≤ 6.18.*
- unaffected 7.2.9 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
5
- https://git.kernel.org/stable/c/7ed1062d154ec2401f2c894fd6858598bb1160b6 (opens in a new tab)
- https://git.kernel.org/stable/c/00457981327c80bcc56e07d4714fe189337a19fa (opens in a new tab)
- https://git.kernel.org/stable/c/e59cb7eda7c06334a0faf5aa44adb6acf2a1287a (opens in a new tab)
- https://git.kernel.org/stable/c/6e74ffc9ecf6ec24eee117150da78a1102be74c5 (opens in a new tab)
- https://git.kernel.org/stable/c/39c0ceedd54557bdc1542de08d22b2ed33e534e4 (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-2026-103745 (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-2026-98505)Record last updated .