CVE-2025-40129

HighCVSS 7.5/10Last modified Oct 19, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected software

VendorProductVersions
LinuxLinux>= 0653028e8f1c97fec30710813a001ad8a2ec34f4, < 81cec07d303186d0d8c623ef8b5ecd3b81e94cf6; >= 0653028e8f1c97fec30710813a001ad8a2ec34f4, < affc03d44921f493deaae1d33151e3067a6f9f8f; >= 0653028e8f1c97fec30710813a001ad8a2ec34f4, < ab9a70cd2386a0d70c164b0905dd66bc9af52e77; >= 0653028e8f1c97fec30710813a001ad8a2ec34f4, < 6df164e29bd4e6505c5a2e0e5f1e1f6957a16a42
LinuxLinux6.3

References

Timeline

Published
Nov 12, 2025
Last modified
Oct 19, 2026
NVD status
Deferred

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