What is CVE-2026-52989?

CVE-2026-52989 is a critical-severity vulnerability in Linux, classified under Use of Uninitialized Resource. CVSS score: 9.8/10. Published 2026-06-24.

How severe is CVE-2026-52989?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Linux

CVE-2026-52989

In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers Currently, when nvmet_tcp_build_pdu_iovec() detects an out-of-bounds PDU length or offset, it trig…

EPSS: 0.003 (26.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Linux — versions 1385be357e8acd09b36e026567f3a9d5c61139de, dca1a6ba0da9f472ef040525fab10fd9956db59f, 19672ae68d52ff75347ebe2420dde1b07adca09f
Linux Linux_kernel — versions 6.19, 7.1

Weakness classification (CWE)

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Third Party Advisory)
0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Third Party Advisory, Issue Tracking)
0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Third Party Advisory)

Frequently asked questions

What is CVE-2026-52989?: CVE-2026-52989 is a critical-severity vulnerability in Linux, classified under Use of Uninitialized Resource. CVSS score: 9.8/10. Published 2026-06-24.
How severe is CVE-2026-52989?: Critical severity. CVSS v3 base score is 9.8 out of 10.