CVE-2026-43330

HIGH EPSS 2.9%
Published May 8, 20261mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published May 8, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

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 Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
2.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-787 Out-of-bounds Write Memory Safety

Affected Products 10

VendorProductVersionRange
linuxlinux_kernel*≥6.3  –  <6.6.134
linuxlinux_kernel*≥6.7  –  <6.12.81
linuxlinux_kernel*≥6.13  –  <6.18.22
linuxlinux_kernel*≥6.19  –  <6.19.12
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 5

  • git.kernel.org https://git.kernel.org/stable/c/31022cfde5235c45fa765f0aabeff5f0652852f2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/80688afb9c35b3934ce2d6be9973758915e2e0ef
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/aa545df011338df13f0833fc1fabcb15c0521959
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c2fb4984fe09fc176fe4c12d5e3edf626df6511d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cebc5ebd958346195b77f42d0cd5141b4e448fae
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/31022cfde5235c45fa765f0aabeff5f0652852f2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/80688afb9c35b3934ce2d6be9973758915e2e0ef
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/aa545df011338df13f0833fc1fabcb15c0521959
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c2fb4984fe09fc176fe4c12d5e3edf626df6511d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cebc5ebd958346195b77f42d0cd5141b4e448fae
    Patch