Description
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 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
a352894d07059649398c4769dc8b645e1a1dad88 to < aa7aa8ba40c089762d821e3987aaae19e1f5705caffecteda352894d07059649398c4769dc8b645e1a1dad88 to < d479a7711f8ff127946467b910d947bd971b94edaffecteda352894d07059649398c4769dc8b645e1a1dad88 to < 9d3569bfdceda69d5ffd5148901e57b69954d9efaffecteda352894d07059649398c4769dc8b645e1a1dad88 to < d97a8f3668949a8a9d1f6202f8c53446f2d89aa7affecteda352894d07059649398c4769dc8b645e1a1dad88 to < 913feef74354c653f10ecd4631df7618a95c49c2affecteda352894d07059649398c4769dc8b645e1a1dad88 to < 3c1e92f75e11a11492b8cb901fceeb9f16ae6415affecteda352894d07059649398c4769dc8b645e1a1dad88 to < 4efa313b15925bdd864784865d6585174979294baffecteda352894d07059649398c4769dc8b645e1a1dad88 to < 47b87f469a35b5ffc81c16eee6b13a9b6c8d55c6affected
Linux Linux
Default version status: affected
2.6.27affected0 to < 2.6.27unaffected5.10.261 to ≤ 5.10.*unaffected5.15.212 to ≤ 5.15.*unaffected6.1.178 to ≤ 6.1.*unaffected6.6.145 to ≤ 6.6.*unaffected6.12.97 to ≤ 6.12.*unaffected6.18.40 to ≤ 6.18.*unaffected7.1.5 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
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 ↗