What is CVE-2025-40129?

CVE-2025-40129 is a high-severity vulnerability in Linux. CVSS score: 7.5/10. Published 2025-11-12.

How severe is CVE-2025-40129?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Linux

CVE-2025-40129

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.

EPSS: 0.005 (42.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Linux — versions 0653028e8f1c97fec30710813a001ad8a2ec34f4, 6.3, 0

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67
416baaa9-dc9f-4396-8d5f-8c081fb06d67
416baaa9-dc9f-4396-8d5f-8c081fb06d67
416baaa9-dc9f-4396-8d5f-8c081fb06d67

Frequently asked questions

What is CVE-2025-40129?: CVE-2025-40129 is a high-severity vulnerability in Linux. CVSS score: 7.5/10. Published 2025-11-12.
How severe is CVE-2025-40129?: High severity. CVSS v3 base score is 7.5 out of 10.