Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: erofs: skip sufficiently large global buffers when resizing z_erofs_gbuf_nrpages is advanced only after every global buffer has been grown. If a resize fails after some buffers were enlarged, a retry revisits those enlarged buffers. Retrying the same size then returns -ENOMEM because alloc_pages_bulk() has no pages to add and the unchanged return value is treated as a failure. Retrying an intermediate size allocates a temporary pointer array smaller than gbuf->nrpages and copies more existing pointers than the array can hold. Skip buffers that already satisfy the request. Once all remaining buffers have caught up, advancing z_erofs_gbuf_nrpages again describes the guaranteed minimum size across the pool.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected d6db47e571dcaecaeaafa8840d00ae849ae3907b before 3fbdd15d5830f52661eb78be95058d101cb0c2cb; affected d6db47e571dcaecaeaafa8840d00ae849ae3907b before 7267557ce98ccd07faaf3bc86382448950cc4ff6; affected d6db47e571dcaecaeaafa8840d00ae849ae3907b before 7f4a89d4f0d6acaf4b756c31de48f2109a257b70; affected d6db47e571dcaecaeaafa8840d00ae849ae3907b before a7d097cf01301c5da37927c8f26123d006f0fd8a |
| Linux / Linux | affected 6.10; unaffected 0 before 6.10; unaffected 6.12.111 through 6.12.*; unaffected 6.18.51 through 6.18.*; unaffected 7.2.4 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.