CVE-2024-50199mm/swapfile: skip HugeTLB pages for unuse_vma
- 5.5MediumCVSS base score
- 0.22%Exploitation in 30 daysEPSS · top 87% 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/swapfile: skip HugeTLB pages for unuse_vma I got a bad pud error and lost a 1GB HugeTLB when calling swapoff. The problem can be reproduced by the following steps: 1. Allocate an anonymous 1GB HugeTLB and some other anonymous memory. 2. Swapout the above anonymous memory. 3. run swapoff and we will get a bad pud error in kernel message: mm/pgtable-generic.c:42: bad pud 00000000743d215d(84000001400000e7) We can tell that pud_clear_bad is called by pud_none_or_clear_bad in unuse_pud_range() by ftrace. And therefore the HugeTLB pages will never be freed because we lost it from page table. We can skip HugeTLB pages for unuse_vma to fix it.
Timeline
ID reserved
By Linux
- 18 days later
· 18 days later
Published
- 18 months later
· 18 months 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
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.22% · top 87% of all CVEs (15 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 0fe6e20b9c4c53b3e97096ee73a0857f60aad43f – < ba7f982cdb37ff5a7739dec85d7325ea66fc1496
- affected 0fe6e20b9c4c53b3e97096ee73a0857f60aad43f – < 417d5838ca73c6331ae2fe692fab6c25c00d9a0b
- affected 0fe6e20b9c4c53b3e97096ee73a0857f60aad43f – < e41710f5a61aca9d6baaa8f53908a927dd9e7aa7
- affected 0fe6e20b9c4c53b3e97096ee73a0857f60aad43f – < 6ec0fe3756f941f42f8c57156b8bdf2877b2ebaf
- affected 0fe6e20b9c4c53b3e97096ee73a0857f60aad43f – < bed2b9037806c62166a0ef9a559a1e7e3e1275b8
- affected 0fe6e20b9c4c53b3e97096ee73a0857f60aad43f – < eb66a833cdd2f7302ee05d05e0fa12a2ca32eb87
- affected 0fe6e20b9c4c53b3e97096ee73a0857f60aad43f – < 7528c4fb1237512ee18049f852f014eba80bbe8d
- affected 2.6.36
- unaffected < 2.6.36
- unaffected 5.4.285 – ≤ 5.4.*
- unaffected 5.10.228 – ≤ 5.10.*
- unaffected 5.15.169 – ≤ 5.15.*
- unaffected 6.1.114 – ≤ 6.1.*
- unaffected 6.6.58 – ≤ 6.6.*
- unaffected 6.11.5 – ≤ 6.11.*
- unaffected 6.12 – ≤ *
References
References9
- https://git.kernel.org/stable/c/ba7f982cdb37ff5a7739dec85d7325ea66fc1496 (opens in a new tab)
- https://git.kernel.org/stable/c/417d5838ca73c6331ae2fe692fab6c25c00d9a0b (opens in a new tab)
- https://git.kernel.org/stable/c/e41710f5a61aca9d6baaa8f53908a927dd9e7aa7 (opens in a new tab)
- https://git.kernel.org/stable/c/6ec0fe3756f941f42f8c57156b8bdf2877b2ebaf (opens in a new tab)
- https://git.kernel.org/stable/c/bed2b9037806c62166a0ef9a559a1e7e3e1275b8 (opens in a new tab)
- https://git.kernel.org/stable/c/eb66a833cdd2f7302ee05d05e0fa12a2ca32eb87 (opens in a new tab)
- https://git.kernel.org/stable/c/7528c4fb1237512ee18049f852f014eba80bbe8d (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html (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-2024-44701 (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-2024-50199)Record last updated .