CVE-2025-21927

HighCVSS 7.8/10Last modified Oct 30, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

nvme-tcp: fix potential memory corruption in nvme_tcp_recv_pdu()

nvme_tcp_recv_pdu() doesn't check the validity of the header length. When header digests are enabled, a target might send a packet with an invalid header length (e.g. 255), causing nvme_tcp_verify_hdgst() to access memory outside the allocated area and cause memory corruptions by overwriting it with the calculated digest.

Fix this by rejecting packets with an unexpected header length.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-787

Affected software

VendorProductVersions
LinuxLinux>= 3f2304f8c6d6ed97849057bd16fee99e434ca796, < 3b54109b2f771f74fd53b027429796326f84ab36; >= 3f2304f8c6d6ed97849057bd16fee99e434ca796, < 9d22cf5cc94cd7dee84773ec41db78a46107dfa3; >= 3f2304f8c6d6ed97849057bd16fee99e434ca796, < 9fbc953d6b38bc824392e01850f0aeee3b348722; >= 3f2304f8c6d6ed97849057bd16fee99e434ca796, < 22b06c89aa6b2d1ecb8aea72edfb9d53af8d5126; >= 3f2304f8c6d6ed97849057bd16fee99e434ca796, < ad95bab0cd28ed77c2c0d0b6e76e03e031391064
LinuxLinux5.0

References

Timeline

Published
Apr 1, 2025
Last modified
Oct 30, 2026
NVD status
Modified

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CVE-2025-21927: High severity, CVSS 7.8 | Vulnix