CVE-2026-23060
Published: February 10, 2026Last modified: February 20, 2026
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.163-r0) |
| 25 LTS | linux-lts | Fixed (6.12.73-r0) | |
| Stream | linux-lts | Fixed (6.12.71-r0) |
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
- https://git.kernel.org/stable/c/df22c9a65e9a9daa368a72fed596af9d7d5876bb
- https://git.kernel.org/stable/c/fee86edf5803f1d1f19e3b4f2dacac241bddfa48