What is CVE-2026-53223?

CVE-2026-53223 is a high-severity vulnerability in Linux. CVSS score: 7.1/10. Published 2026-06-25.

How severe is CVE-2026-53223?

High severity. CVSS v3 base score is 7.1 out of 10.

Vulnerability in Linux

CVE-2026-53223

In the Linux kernel, the following vulnerability has been resolved: net: guard timestamp cmsgs to real error queue skbs skb_is_err_queue() treats PACKET_OUTGOING as the sole marker for an skb from sk_error_queue. That assumption is not t…

EPSS: 0.001 (2.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.

Affected products

Linux — versions 8605330aac5a5785630aec8f64378a54891937cc, cdaf15b43bd31003220cb080bcbbd57787a2fca9, 4.10.14
Linux Linux_kernel — versions 4.11, 7.1

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)

Frequently asked questions

What is CVE-2026-53223?: CVE-2026-53223 is a high-severity vulnerability in Linux. CVSS score: 7.1/10. Published 2026-06-25.
How severe is CVE-2026-53223?: High severity. CVSS v3 base score is 7.1 out of 10.