CVE-2026-74567 (GCVE-0-2026-74567)
Vulnerability from cvelistv5
Published
2026-08-15 12:28
Modified
2026-10-16 19:05
Severity ?
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: f771fde82051976a6fc0fd570f8b86de4a92124b
Version: f771fde82051976a6fc0fd570f8b86de4a92124b
Version: f771fde82051976a6fc0fd570f8b86de4a92124b
Version: f771fde82051976a6fc0fd570f8b86de4a92124b
Version: f771fde82051976a6fc0fd570f8b86de4a92124b
Version: f771fde82051976a6fc0fd570f8b86de4a92124b
Version: f771fde82051976a6fc0fd570f8b86de4a92124b
Version: f771fde82051976a6fc0fd570f8b86de4a92124b
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