crypto: caam - fix DMA corruption on long hmac keys
Summary
| CVE | CVE-2026-43044 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-01 15:16:50 UTC |
| Updated | 2026-05-03 07:16:23 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: crypto: caam - fix DMA corruption on long hmac keys When a key longer than block size is supplied, it is copied and then hashed into the real key. The memory allocated for the copy needs to be rounded to DMA cache alignment, as otherwise the hashed key may corrupt neighbouring memory. The rounding was performed, but never actually used for the allocation. Fix this by replacing kmemdup with kmalloc for a larger buffer, followed by memcpy. |
Risk And Classification
Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.000180000 probability, percentile 0.048520000 (date 2026-05-02)
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Secondary | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | CNA | DECLARED | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 199354d7fb6eaa2cc5bb650af0bca624baffee35 a7ecf06d3ee06e9b3322e1e7b003ea5c6f6e135a git | Not specified |
| CNA | Linux | Linux | affected 199354d7fb6eaa2cc5bb650af0bca624baffee35 c0c133e0225d87aad326bb90bbce9bdd6fde3cbb git | Not specified |
| CNA | Linux | Linux | affected 199354d7fb6eaa2cc5bb650af0bca624baffee35 68feed135a0c7243a9275ae7e6a18260f755f52b git | Not specified |
| CNA | Linux | Linux | affected 199354d7fb6eaa2cc5bb650af0bca624baffee35 f2af8be110bde26b3e3354efdfdda97f426306a4 git | Not specified |
| CNA | Linux | Linux | affected 199354d7fb6eaa2cc5bb650af0bca624baffee35 5ddfdcbe10dc5f97afc4e46ca22be2be717e8caf git | Not specified |
| CNA | Linux | Linux | affected 6.3 | Not specified |
| CNA | Linux | Linux | unaffected 6.3 semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.134 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.81 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.22 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.19.12 6.19.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/a7ecf06d3ee06e9b3322e1e7b003ea5c6f6e135a | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/68feed135a0c7243a9275ae7e6a18260f755f52b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/f2af8be110bde26b3e3354efdfdda97f426306a4 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/5ddfdcbe10dc5f97afc4e46ca22be2be717e8caf | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/c0c133e0225d87aad326bb90bbce9bdd6fde3cbb | 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.