CVE-2026-23060

In the Linux kernel, the following vulnerability has been resolved: crypto: authencesn - reject too-short AAD (assoclen<8) to match ESP/ESN spec authencesn assumes an ESP/ESN-formatted AAD. When assoclen is shorter than the minimum expected length, crypto_authenc_esn_decrypt() can advance past the end of the destination scatterlist and trigger a NULL pointer dereference in scatterwalk_map_and_copy(), leading to a kernel panic (DoS). Add a minimum AAD length check to fail fast on invalid inputs.

CVSS 3.1

5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 7% of CVEs (scores of 2026-10-25)

CWE

CWE-476

Published

2026-02-04

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/161bdc90fce25bd9890adc67fa1c8563a7acbf40
• https://git.kernel.org/stable/c/2397e9264676be7794f8f7f1e9763d90bd3c7335
• https://git.kernel.org/stable/c/767e8349f7e929b7dd95c08f0b4cb353459b365e
• https://git.kernel.org/stable/c/9532ff0d0e90ff78a214299f594ab9bac81defe4
• https://git.kernel.org/stable/c/b0a9609283a5c852addb513dafa655c61eebc1ef

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