What is CVE-2026-53176?

CVE-2026-53176 is a critical-severity vulnerability in Linux, classified under Integer Underflow. CVSS score: 9.8/10. Published 2026-06-25.

How severe is CVE-2026-53176?

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

Integer overflow in Linux

CVE-2026-53176

In the Linux kernel, the following vulnerability has been resolved: IB/isert: Reject login PDUs shorter than ISER_HEADERS_LEN In drivers/infiniband/ulp/isert/ib_isert.c, isert_login_recv_done() computes the login request payload length a…

EPSS: 0.007 (50.6th 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 b8d26b3be8b33682cf163274ed07479a70554633, 3.10, 0
Linux Linux_kernel — versions 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)
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)

Frequently asked questions

What is CVE-2026-53176?: CVE-2026-53176 is a critical-severity vulnerability in Linux, classified under Integer Underflow. CVSS score: 9.8/10. Published 2026-06-25.
How severe is CVE-2026-53176?: Critical severity. CVSS v3 base score is 9.8 out of 10.