Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: mm/huge_memory: drop beyond-EOF folios with the right number of refs When an after-split folio is large and needs to be dropped due to EOF, folio_put_refs(folio, folio_nr_pages(folio)) should be used to drop all page cache refs. Otherwise, the folio will not be freed, causing memory leak. This leak would happen on a filesystem with blocksize > page_size and a truncate is performed, where the blocksize makes folios split to >0 order ones, causing truncated folios not being freed.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected c010d47f107f609b9f4d6a103b6dfc53889049e9 before 86368616a9ce51f6b41efa251b6e066893851d67; affected c010d47f107f609b9f4d6a103b6dfc53889049e9 before 92ad820a1f2d95d5a8d6c2bd3f391bbb068a5f9e; affected c010d47f107f609b9f4d6a103b6dfc53889049e9 before 14efb4793519d73fb2902bb0ece319b886e4b4b9 |
| Linux / Linux | affected 6.9; unaffected 0 before 6.9; unaffected 6.12.21 through 6.12.*; unaffected 6.13.9 through 6.13.*; unaffected 6.14 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/86368616a9ce51f6b41efa251b6e066893851d67
- https://git.kernel.org/stable/c/92ad820a1f2d95d5a8d6c2bd3f391bbb068a5f9e
- https://git.kernel.org/stable/c/14efb4793519d73fb2902bb0ece319b886e4b4b9
ADP enrichment
No English description supplied.
No references supplied.