Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: crypto: caam - fix overflow 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 copying is performed using kmemdup, however this leads to an overflow: reading more bytes (aligned_len - keylen) from the keylen source buffer. Fix this by replacing kmemdup with kmalloc, followed by memcpy.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.3, < 6.6.134 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/31022cfde5235c45fa765f0aabeff5f0652852f2Patch
- https://git.kernel.org/stable/c/80688afb9c35b3934ce2d6be9973758915e2e0efPatch
- https://git.kernel.org/stable/c/aa545df011338df13f0833fc1fabcb15c0521959Patch
- https://git.kernel.org/stable/c/c2fb4984fe09fc176fe4c12d5e3edf626df6511dPatch
- https://git.kernel.org/stable/c/cebc5ebd958346195b77f42d0cd5141b4e448faePatch
FAQ
What is CVE-2026-43330?
CVE-2026-43330 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: crypto: caam - fix overflow on long hmac keys When a key longer than block size is supplied, it is copied and then hashed into the...
How severe is CVE-2026-43330?
CVE-2026-43330 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-43330?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.