CVE-2026-74566 - keys: make keyring key-chunk byte order agree with keyring_diff_objects()

CVE-2026-74566 - keys: make keyring key-chunk byte order agree with keyring_diff_objects()

https://cvefeed.io/rssfeed/latest.atom / Sat, 08/15/2026 - 19:26
CVE ID :CVE-2026-74566
Published : Aug. 15, 2026, 1:18 p.m. | 2 hours, 11 minutes ago
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.
Severity: 0.0 | NA
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