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.
Does this matter?
Lower severity and a low EPSS score (0.13%). Track it; it rarely justifies an emergency change on its own.
Description
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
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.13% probability · 3th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/161bdc90fce25bd9890adc67fa1c8563a7acbf40Patch
- https://git.kernel.org/stable/c/2397e9264676be7794f8f7f1e9763d90bd3c7335Patch
- https://git.kernel.org/stable/c/767e8349f7e929b7dd95c08f0b4cb353459b365ePatch
- https://git.kernel.org/stable/c/9532ff0d0e90ff78a214299f594ab9bac81defe4Patch
- https://git.kernel.org/stable/c/b0a9609283a5c852addb513dafa655c61eebc1efPatch
- https://git.kernel.org/stable/c/df22c9a65e9a9daa368a72fed596af9d7d5876bbPatch
- https://git.kernel.org/stable/c/fee86edf5803f1d1f19e3b4f2dacac241bddfa48Patch
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.