CVE-2024-50199
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2024
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
mm/swapfile: skip HugeTLB pages for unuse_vma
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0fe6e20b9c4c53b3e97096ee73a0857f60aad43f | affected | git | ba7f982cdb37ff5a7739dec85d7325ea66fc1496 | Unavailable | None listed |
| 0fe6e20b9c4c53b3e97096ee73a0857f60aad43f | affected | git | 417d5838ca73c6331ae2fe692fab6c25c00d9a0b | Unavailable | None listed |
| 0fe6e20b9c4c53b3e97096ee73a0857f60aad43f | affected | git | e41710f5a61aca9d6baaa8f53908a927dd9e7aa7 | Unavailable | None listed |
| 0fe6e20b9c4c53b3e97096ee73a0857f60aad43f | affected | git | 6ec0fe3756f941f42f8c57156b8bdf2877b2ebaf | Unavailable | None listed |
| 0fe6e20b9c4c53b3e97096ee73a0857f60aad43f | affected | git | bed2b9037806c62166a0ef9a559a1e7e3e1275b8 | Unavailable | None listed |
| 0fe6e20b9c4c53b3e97096ee73a0857f60aad43f | affected | git | eb66a833cdd2f7302ee05d05e0fa12a2ca32eb87 | Unavailable | None listed |
| 0fe6e20b9c4c53b3e97096ee73a0857f60aad43f | affected | git | 7528c4fb1237512ee18049f852f014eba80bbe8d | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 2.6.36 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.36 | Unavailable | None listed |
| 5.4.285 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.228 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.169 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.114 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.58 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.11.5 | unaffected | semver | Unavailable | 6.11.* | None listed |
| 6.12 | unaffected | original_commit_for_fix | Unavailable | * | None listed |