CVE-2026-68474

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinuxa352894d07059649398c4769dc8b645e1a1dad88 < aa7aa8ba40c089762d821e3987aaae19e1f5705caffected
LinuxLinuxa352894d07059649398c4769dc8b645e1a1dad88 < d479a7711f8ff127946467b910d947bd971b94edaffected
LinuxLinuxa352894d07059649398c4769dc8b645e1a1dad88 < 9d3569bfdceda69d5ffd5148901e57b69954d9efaffected
LinuxLinuxa352894d07059649398c4769dc8b645e1a1dad88 < d97a8f3668949a8a9d1f6202f8c53446f2d89aa7affected
LinuxLinuxa352894d07059649398c4769dc8b645e1a1dad88 < 913feef74354c653f10ecd4631df7618a95c49c2affected
LinuxLinuxa352894d07059649398c4769dc8b645e1a1dad88 < 3c1e92f75e11a11492b8cb901fceeb9f16ae6415affected
LinuxLinuxa352894d07059649398c4769dc8b645e1a1dad88 < 4efa313b15925bdd864784865d6585174979294baffected
LinuxLinuxa352894d07059649398c4769dc8b645e1a1dad88 < 47b87f469a35b5ffc81c16eee6b13a9b6c8d55c6affected
LinuxLinux2.6.27affected
LinuxLinux0 < 2.6.27unaffected
LinuxLinux5.10.261 <= 5.10.*unaffected
LinuxLinux5.15.212 <= 5.15.*unaffected
LinuxLinux6.1.178 <= 6.1.*unaffected
LinuxLinux6.6.145 <= 6.6.*unaffected
LinuxLinux6.12.97 <= 6.12.*unaffected
LinuxLinux6.18.40 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2-rc4 <= *unaffected

Weaknesses

References