What is CVE-2026-53091?

CVE-2026-53091 is a high-severity vulnerability in Linux, classified under Incorrect Calculation of Buffer Size. CVSS score: 8.4/10. Published 2026-06-24.

How severe is CVE-2026-53091?

High severity. CVSS v3 base score is 8.4 out of 10.

Vulnerability in Linux

CVE-2026-53091

In the Linux kernel, the following vulnerability has been resolved: net: pull headers in qdisc_pkt_len_segs_init() Most ndo_start_xmit() methods expects headers of gso packets to be already in skb->head. net/core/tso.c users are particu…

EPSS: 0.001 (2.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H.

Affected products

Linux — versions e876f208af18b074f800656e4d1b99da75b2135f, 3.16, 0
Linux Linux_kernel

Weakness classification (CWE)

CWE-131 — Incorrect Calculation of Buffer Size

References

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)
0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Third Party Advisory)

Frequently asked questions

What is CVE-2026-53091?: CVE-2026-53091 is a high-severity vulnerability in Linux, classified under Incorrect Calculation of Buffer Size. CVSS score: 8.4/10. Published 2026-06-24.
How severe is CVE-2026-53091?: High severity. CVSS v3 base score is 8.4 out of 10.