Description
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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
d6db47e571dcaecaeaafa8840d00ae849ae3907b to < 3fbdd15d5830f52661eb78be95058d101cb0c2cbaffectedd6db47e571dcaecaeaafa8840d00ae849ae3907b to < 7267557ce98ccd07faaf3bc86382448950cc4ff6affectedd6db47e571dcaecaeaafa8840d00ae849ae3907b to < 7f4a89d4f0d6acaf4b756c31de48f2109a257b70affectedd6db47e571dcaecaeaafa8840d00ae849ae3907b to < a7d097cf01301c5da37927c8f26123d006f0fd8aaffected
Linux Linux
Default version status: affected
6.10affected0 to < 6.10unaffected6.12.111 to ≤ 6.12.*unaffected6.18.51 to ≤ 6.18.*unaffected7.2.4 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected