keys: make keyring key-chunk byte order agree with keyring_diff_objects()
Summary
| CVE | CVE-2026-74566 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-15 13:18:02 UTC |
| Updated | 2026-08-19 17:21:11 UTC |
| 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. |
Risk And Classification
EPSS: 0.001560000 probability, percentile 0.053390000 (date 2026-08-19)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected f771fde82051976a6fc0fd570f8b86de4a92124b 414bcf37d81ce9b3823aabc06b04c97fdcbe489b git | Not specified |
| CNA | Linux | Linux | affected f771fde82051976a6fc0fd570f8b86de4a92124b abe43c661efb753d5ee35ad8ace4bbb16fa9afd0 git | Not specified |
| CNA | Linux | Linux | affected f771fde82051976a6fc0fd570f8b86de4a92124b f81920917074e3c4ad4fba06fe8c56738d010606 git | Not specified |
| CNA | Linux | Linux | affected f771fde82051976a6fc0fd570f8b86de4a92124b bd0f976ef89dce6db458bf75bc2cf51127becc41 git | Not specified |
| CNA | Linux | Linux | affected f771fde82051976a6fc0fd570f8b86de4a92124b 7269df3e7fcfa308e6a456305162f7788747bdbd git | Not specified |
| CNA | Linux | Linux | affected f771fde82051976a6fc0fd570f8b86de4a92124b 3d9f16c0b643ceac305526b2e2fe25c2c6166926 git | Not specified |
| CNA | Linux | Linux | affected f771fde82051976a6fc0fd570f8b86de4a92124b 7e5397a3fed0dee7779bd084bec3c0584db3c930 git | Not specified |
| CNA | Linux | Linux | affected f771fde82051976a6fc0fd570f8b86de4a92124b 58565eef0f8d861aae92abfb7658458d661cee17 git | Not specified |
| CNA | Linux | Linux | affected 5.3 | Not specified |
| CNA | Linux | Linux | unaffected 5.3 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.265 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.216 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.183 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.151 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.103 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.44 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1.8 7.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/58565eef0f8d861aae92abfb7658458d661cee17 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/414bcf37d81ce9b3823aabc06b04c97fdcbe489b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/7269df3e7fcfa308e6a456305162f7788747bdbd | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/7e5397a3fed0dee7779bd084bec3c0584db3c930 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/3d9f16c0b643ceac305526b2e2fe25c2c6166926 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/bd0f976ef89dce6db458bf75bc2cf51127becc41 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/abe43c661efb753d5ee35ad8ace4bbb16fa9afd0 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/f81920917074e3c4ad4fba06fe8c56738d010606 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.