CVE-2025-40129

high

Description

In the Linux kernel, the following vulnerability has been resolved: sunrpc: fix null pointer dereference on zero-length checksum In xdr_stream_decode_opaque_auth(), zero-length checksum.len causes checksum.data to be set to NULL. This triggers a NPD when accessing checksum.data in gss_krb5_verify_mic_v2(). This patch ensures that the value of checksum.len is not less than XDR_UNIT.

References

https://git.kernel.org/stable/c/affc03d44921f493deaae1d33151e3067a6f9f8f

https://git.kernel.org/stable/c/ab9a70cd2386a0d70c164b0905dd66bc9af52e77

https://git.kernel.org/stable/c/81cec07d303186d0d8c623ef8b5ecd3b81e94cf6

https://git.kernel.org/stable/c/6df164e29bd4e6505c5a2e0e5f1e1f6957a16a42

Details

Source: Mitre, NVD

Published: 2025-11-12

Updated: 2025-11-12

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

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

Severity: High

EPSS

EPSS: 0.00018