Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: powerpc/spufs: fix out-of-bounds access in spufs_mem_mmap_access() spufs_mem_mmap_access() computes the local store offset as address - vma->vm_start, but bounds-checks it against vma->vm_end instead of the local store size. On 64-bit, offset is always well below vma->vm_end, so the clamp never fires and len stays unbounded against the LS_SIZE buffer returned by ctx->ops->get_ls(). Reject offsets at or beyond LS_SIZE and clamp len to the remaining space, mirroring the guard already used by spufs_mem_mmap_fault() and spufs_ps_fault().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected a352894d07059649398c4769dc8b645e1a1dad88 before aa7aa8ba40c089762d821e3987aaae19e1f5705c; affected a352894d07059649398c4769dc8b645e1a1dad88 before d479a7711f8ff127946467b910d947bd971b94ed; affected a352894d07059649398c4769dc8b645e1a1dad88 before 9d3569bfdceda69d5ffd5148901e57b69954d9ef; affected a352894d07059649398c4769dc8b645e1a1dad88 before d97a8f3668949a8a9d1f6202f8c53446f2d89aa7; affected a352894d07059649398c4769dc8b645e1a1dad88 before 913feef74354c653f10ecd4631df7618a95c49c2; affected a352894d07059649398c4769dc8b645e1a1dad88 before 3c1e92f75e11a11492b8cb901fceeb9f16ae6415; affected a352894d07059649398c4769dc8b645e1a1dad88 before 4efa313b15925bdd864784865d6585174979294b; affected a352894d07059649398c4769dc8b645e1a1dad88 before 47b87f469a35b5ffc81c16eee6b13a9b6c8d55c6 |
| Linux / Linux | affected 2.6.27; unaffected 0 before 2.6.27; unaffected 5.10.261 through 5.10.*; unaffected 5.15.212 through 5.15.*; unaffected 6.1.178 through 6.1.*; unaffected 6.6.145 through 6.6.*; unaffected 6.12.97 through 6.12.*; unaffected 6.18.40 through 6.18.*; unaffected 7.1.5 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/aa7aa8ba40c089762d821e3987aaae19e1f5705c
- https://git.kernel.org/stable/c/d479a7711f8ff127946467b910d947bd971b94ed
- https://git.kernel.org/stable/c/9d3569bfdceda69d5ffd5148901e57b69954d9ef
- https://git.kernel.org/stable/c/d97a8f3668949a8a9d1f6202f8c53446f2d89aa7
- https://git.kernel.org/stable/c/913feef74354c653f10ecd4631df7618a95c49c2
- https://git.kernel.org/stable/c/3c1e92f75e11a11492b8cb901fceeb9f16ae6415
- https://git.kernel.org/stable/c/4efa313b15925bdd864784865d6585174979294b
- https://git.kernel.org/stable/c/47b87f469a35b5ffc81c16eee6b13a9b6c8d55c6