CVE-2025-21927

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux3f2304f8c6d6ed97849057bd16fee99e434ca796 < 9fbc953d6b38bc824392e01850f0aeee3b348722affected
LinuxLinux3f2304f8c6d6ed97849057bd16fee99e434ca796 < 22b06c89aa6b2d1ecb8aea72edfb9d53af8d5126affected
LinuxLinux3f2304f8c6d6ed97849057bd16fee99e434ca796 < ad95bab0cd28ed77c2c0d0b6e76e03e031391064affected
LinuxLinux5.0affected
LinuxLinux0 < 5.0unaffected
LinuxLinux6.12.19 <= 6.12.*unaffected
LinuxLinux6.13.7 <= 6.13.*unaffected
LinuxLinux6.14 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

References