What’s Vulnerable › Vulnerabilities

CVE-2026-52972: crypto: af_alg - Cap AEAD AD length to 0x80000000

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-24 · updated 2026-10-25
• Weakness: CWE-190

Description

In the Linux kernel, the following vulnerability has been resolved: crypto: af_alg - Cap AEAD AD length to 0x80000000 In order to prevent arithmetic overflows when checking the TX buffer size, cap the associated data length to 0x80000000.

Affected products

• Linux kernel: from 4.1 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.141; from 6.7 before 6.12.91; from 6.13 before 6.18.33 — fixed in 5.10.258, 5.15.209, 6.1.175, 6.6.141, 6.12.91, 6.18.33

How to fix

Upgrade to a fixed version: Linux kernel 5.10.258, 5.15.209, 6.1.175, 6.6.141. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0b3a57d218618cb1cc78ddc9ba02c07de84b46f4
• https://git.kernel.org/stable/c/265ac26d1c5e17b34d497cbda1f754a1ec8552bc
• https://git.kernel.org/stable/c/97948906dc8e0ea84775e03e35b60a2063c70193
• https://git.kernel.org/stable/c/a1c5672faf8e93e38c2deac3979cc767ca5cf918
• https://git.kernel.org/stable/c/a4fe4eb580bbc7439f649a496d4cf38415a4021c
• https://git.kernel.org/stable/c/a9f68d9ed38dd6e5a6c6d75b03d25c1c133e321d
• https://git.kernel.org/stable/c/e4c06479d7059888adf2f22bc1ebcf053bf691a2
• https://git.kernel.org/stable/c/e4c4a5074532eaaa14951994a3aad0d479aa7431
• https://git.kernel.org/stable/c/f8a5203596797f394ff3f9aa4005597a92249802
• https://access.redhat.com/security/cve/CVE-2026-52972
• https://bugzilla.redhat.com/show_bug.cgi?id=2492364
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52972.json

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