VULNERABILITY

Red Hat: CVE-2025-21927: kernel: nvme-tcp: fix potential memory corruption in nvme_tcp_recv_pdu() (Multiple Advisories)

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Red Hat: CVE-2025-21927: kernel: nvme-tcp: fix potential memory corruption in nvme_tcp_recv_pdu() (Multiple Advisories)

Severity
8
CVSS
(AV:N/AC:H/Au:N/C:C/I:C/A:C)
Published
04/01/2025
Created
05/02/2025
Added
05/01/2025
Modified
05/01/2025

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.

Solution(s)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt

References

  • CVE-2025-21927
  • RHSA-2025:4339
  • RHSA-2025:4340
  • RHSA-2025:4341

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