Description
In the Linux kernel, the following vulnerability has been resolved: keys: make keyring key-chunk byte order agree with keyring_diff_objects() keyring_get_key_chunk() loads description bytes into the index chunk low address first, while keyring_diff_objects() numbers the first differing bit from the low end and folds the absolute byte index into the level without removing the inline-prefix offset the level already carries. The two disagree on byte order and bit position, so the array can be told two keys first differ at a bit that does not differ in the chunk the walker uses, letting crafted descriptions collide into one node. Load the chunk in the order keyring_diff_objects() assumes and drop the inline-prefix length when folding the byte index into the level. This only changes the in-memory ordering used to place keys within a keyring; add, search and read of non-colliding keys are unaffected.
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 < 414bcf37d81ce9b3823aabc06b04c97fdcbe489baffectedf771fde82051976a6fc0fd570f8b86de4a92124b to < abe43c661efb753d5ee35ad8ace4bbb16fa9afd0affectedf771fde82051976a6fc0fd570f8b86de4a92124b to < f81920917074e3c4ad4fba06fe8c56738d010606affectedf771fde82051976a6fc0fd570f8b86de4a92124b to < bd0f976ef89dce6db458bf75bc2cf51127becc41affectedf771fde82051976a6fc0fd570f8b86de4a92124b to < 7269df3e7fcfa308e6a456305162f7788747bdbdaffectedf771fde82051976a6fc0fd570f8b86de4a92124b to < 3d9f16c0b643ceac305526b2e2fe25c2c6166926affectedf771fde82051976a6fc0fd570f8b86de4a92124b to < 7e5397a3fed0dee7779bd084bec3c0584db3c930affectedf771fde82051976a6fc0fd570f8b86de4a92124b to < 58565eef0f8d861aae92abfb7658458d661cee17affected
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/414bcf37d81ce9b3823aabc06b04c97fdcbe489b ↗
- https://git.kernel.org/stable/c/abe43c661efb753d5ee35ad8ace4bbb16fa9afd0 ↗
- https://git.kernel.org/stable/c/f81920917074e3c4ad4fba06fe8c56738d010606 ↗
- https://git.kernel.org/stable/c/bd0f976ef89dce6db458bf75bc2cf51127becc41 ↗
- https://git.kernel.org/stable/c/7269df3e7fcfa308e6a456305162f7788747bdbd ↗
- https://git.kernel.org/stable/c/3d9f16c0b643ceac305526b2e2fe25c2c6166926 ↗
- https://git.kernel.org/stable/c/7e5397a3fed0dee7779bd084bec3c0584db3c930 ↗
- https://git.kernel.org/stable/c/58565eef0f8d861aae92abfb7658458d661cee17 ↗