What is CVE-2026-53191?

CVE-2026-53191 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2026-06-25.

How severe is CVE-2026-53191?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Linux

CVE-2026-53191

In the Linux kernel, the following vulnerability has been resolved: io_uring/net: inherit IORING_CQE_F_BUF_MORE across bundle recv retries When a bundle recv retries inside io_recv_finish(), the merge logic OR the saved cflags from the p…

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

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Linux — versions ae98dbf43d755b4e111fcd086e53939bef3e9a1a, 6.12, 0
Linux Linux_kernel — versions 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)

Frequently asked questions

What is CVE-2026-53191?: CVE-2026-53191 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2026-06-25.
How severe is CVE-2026-53191?: High severity. CVSS v3 base score is 7.8 out of 10.