Critical 9.8Published Apr 1, 2025

CVE-2025-21927nvme-tcp: fix potential memory corruption in nvme_tcp_recv_pdu()

Updated under an hour ago (Oct 27, 2026, 6:40 PM ET)

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Exploited in the last 30 days

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.

CVSS: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-787
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 21, 2026
First seen by InfoSec Signals: Oct 21, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 3f2304f8c6d6ed97849057bd16fee99e434ca796 before 9d22cf5cc94cd7dee84773ec41db78a46107dfa3; from 3f2304f8c6d6ed97849057bd16fee99e434ca796 before 9fbc953d6b38bc824392e01850f0aeee3b348722; from 3f2304f8c6d6ed97849057bd16fee99e434ca796 before 22b06c89aa6b2d1ecb8aea72edfb9d53af8d5126; from 3f2304f8c6d6ed97849057bd16fee99e434ca796 before ad95bab0cd28ed77c2c0d0b6e76e03e031391064	CNA record
linux linux_kernel linux:linux_kernel	from 5.0 before 6.12.19; from 6.13 before 6.13.7; 6.14; 6.14; 6.14; 6.14; 6.14	NVD

References

References

https://git.kernel.org/stable/c/9d22cf5cc94cd7dee84773ec41db78a46107dfa3
https://git.kernel.org/stable/c/9fbc953d6b38bc824392e01850f0aeee3b348722	patch
https://git.kernel.org/stable/c/22b06c89aa6b2d1ecb8aea72edfb9d53af8d5126	patch
https://git.kernel.org/stable/c/ad95bab0cd28ed77c2c0d0b6e76e03e031391064	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.