Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Reject arena frees below the arena base bpf_arena_free_pages() accepts scalar arena addresses. The runtime masks the address to the low 32 bits and reconstructs a full user address from the arena base before returning the range to the arena free tree. When the scalar value is below the low 32 bits of the arena base, full_uaddr falls below user_vm_start. The existing upper-end clipping then turns this into an out-of-range free-tree offset. A later allocation can reuse that offset and return an address below the arena mapping. Reject such frees before computing the clipped range.
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
317460317a02a1af512697e6e964298dedd8a163 to < 90453eaf8f14e7be0ab03983f2a93aeb6b990a58affected317460317a02a1af512697e6e964298dedd8a163 to < a968dffa5ab3c74d2ebb3a6233bf8b843f0bfc20affected317460317a02a1af512697e6e964298dedd8a163 to < 8a08635656037aee9c12231ed384449c4ffb1a93affected317460317a02a1af512697e6e964298dedd8a163 to < b5a71cb2db6d84ac0042549dcec266b18429d41eaffected
Linux Linux
Default version status: affected
6.9affected0 to < 6.9unaffected6.12.110 to ≤ 6.12.*unaffected6.18.52 to ≤ 6.18.*unaffected7.2.6 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected