Riskcovery

CVE-2026-43044

crypto: caam - fix DMA corruption on long hmac keys

State
Published
Severity
7.8 High
Published
May 1, 2026
Updated
Aug 5, 2026
Reserved
May 1, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 199354d7fb6eaa2cc5bb650af0bca624baffee35 to before a7ecf06d3ee06e9b3322e1e7b003ea5c6f6e135aAffected
  • 199354d7fb6eaa2cc5bb650af0bca624baffee35 to before c0c133e0225d87aad326bb90bbce9bdd6fde3cbbAffected
  • 199354d7fb6eaa2cc5bb650af0bca624baffee35 to before 68feed135a0c7243a9275ae7e6a18260f755f52bAffected
  • 199354d7fb6eaa2cc5bb650af0bca624baffee35 to before f2af8be110bde26b3e3354efdfdda97f426306a4Affected
  • 199354d7fb6eaa2cc5bb650af0bca624baffee35 to before 5ddfdcbe10dc5f97afc4e46ca22be2be717e8cafAffected
LinuxLinux
  • 6.3Affected
  • before 6.3Not affected
  • 6.6.134 through 6.6.*Not affected
  • 6.12.81 through 6.12.*Not affected
  • 6.18.22 through 6.18.*Not affected
  • 6.19.12 through 6.19.*Not affected
  • 7.0 and laterNot affected

References

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