Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: erofs: handle NONHEAD !delta[1] lclusters gracefully syzbot reported a WARNING in iomap_iter_done: iomap_fiemap+0x73b/0x9b0 fs/iomap/fiemap.c:80 ioctl_fiemap fs/ioctl.c:220 [inline] Generally, NONHEAD lclusters won't have delta[1]==0, except for crafted images and filesystems created by pre-1.0 mkfs versions. Previously, it would immediately bail out if delta[1]==0, which led to inadequate decompressed lengths (thus FIEMAP is impacted). Treat it as delta[1]=1 to work around these legacy mkfs versions. `lclusterbits > 14` is illegal for compact indexes, error out too.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected d95ae5e25326092d61613acf98280270dde22778 before 75a0a6dde803e7a3af700da8da9a361b49f69eba; affected d95ae5e25326092d61613acf98280270dde22778 before f466641debcbea8bdf78d1b63a6270aadf9301bf; affected d95ae5e25326092d61613acf98280270dde22778 before 480c6c7b55aeacac800bc2a0d321ff53273045e5; affected d95ae5e25326092d61613acf98280270dde22778 before daaf68fef4b2ff97928227630021d37b27a96655; affected d95ae5e25326092d61613acf98280270dde22778 before 0bc8061ffc733a0a246b8689b2d32a3e9204f43c; affected 96a85becb811ca2ce21a21721f1544d342ae431e; affected 8c723eef989bc419585237daa467b787ddca5415; affected 5.4.251 before 5.5; affected 5.10.188 before 5.11 |
| Linux / Linux | affected 5.15; unaffected 0 before 5.15; unaffected 6.1.127 through 6.1.*; unaffected 6.6.64 through 6.6.*; unaffected 6.11.11 through 6.11.*; unaffected 6.12.2 through 6.12.*; unaffected 6.13 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/75a0a6dde803e7a3af700da8da9a361b49f69eba
- https://git.kernel.org/stable/c/f466641debcbea8bdf78d1b63a6270aadf9301bf
- https://git.kernel.org/stable/c/480c6c7b55aeacac800bc2a0d321ff53273045e5
- https://git.kernel.org/stable/c/daaf68fef4b2ff97928227630021d37b27a96655
- https://git.kernel.org/stable/c/0bc8061ffc733a0a246b8689b2d32a3e9204f43c
ADP enrichment
No English description supplied.