Description
In the Linux kernel, the following vulnerability has been resolved: keys: fix out-of-bounds read in keyring_get_key_chunk() For description-level chunks keyring_get_key_chunk() advances the read pointer by level * sizeof(long) past the inline prefix but only bounds-checks the prefix, so a long enough key description is read past its kmemdup(desc, desc_len + 1) allocation. Compute the full byte offset and bounds-check the description against it before reading. The walk only reaches a description-level chunk when two keys collide through the hash, x, type and domain_tag chunks, so this is reached from an unprivileged add_key(2) with a crafted pair of same-type keys whose index hashes collide; KASAN reports a slab-out-of-bounds read.
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
f771fde82051976a6fc0fd570f8b86de4a92124b to < 4c0c26f751e50d3027eacc4d7d0fabc31f1d7e6baffectedf771fde82051976a6fc0fd570f8b86de4a92124b to < 79916f40d4ab1b4ae694d8c024fd179454bfe46eaffectedf771fde82051976a6fc0fd570f8b86de4a92124b to < e5b01998cef8d7f613200230ccaadebe5de9135caffectedf771fde82051976a6fc0fd570f8b86de4a92124b to < d1933e03e8c74a018550c31a393b79c4d95bff40affectedf771fde82051976a6fc0fd570f8b86de4a92124b to < 3a744838453fb9309ce5a5526d3252e211d60152affectedf771fde82051976a6fc0fd570f8b86de4a92124b to < e9417d21a22ad2ec398e78fcf084b717ce92cf2faffectedf771fde82051976a6fc0fd570f8b86de4a92124b to < 8dba33c1e779d0fb9a2acb31e354cf0fc0229111affectedf771fde82051976a6fc0fd570f8b86de4a92124b to < 63918731f9ae25b5deb022f118e941e6dddfcef4affected
Linux Linux
Default version status: affected
5.3affected0 to < 5.3unaffected5.10.265 to ≤ 5.10.*unaffected5.15.216 to ≤ 5.15.*unaffected6.1.183 to ≤ 6.1.*unaffected6.6.151 to ≤ 6.6.*unaffected6.12.103 to ≤ 6.12.*unaffected6.18.44 to ≤ 6.18.*unaffected7.1.8 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/4c0c26f751e50d3027eacc4d7d0fabc31f1d7e6b ↗
- https://git.kernel.org/stable/c/79916f40d4ab1b4ae694d8c024fd179454bfe46e ↗
- https://git.kernel.org/stable/c/e5b01998cef8d7f613200230ccaadebe5de9135c ↗
- https://git.kernel.org/stable/c/d1933e03e8c74a018550c31a393b79c4d95bff40 ↗
- https://git.kernel.org/stable/c/3a744838453fb9309ce5a5526d3252e211d60152 ↗
- https://git.kernel.org/stable/c/e9417d21a22ad2ec398e78fcf084b717ce92cf2f ↗
- https://git.kernel.org/stable/c/8dba33c1e779d0fb9a2acb31e354cf0fc0229111 ↗
- https://git.kernel.org/stable/c/63918731f9ae25b5deb022f118e941e6dddfcef4 ↗