What is CVE-2026-31712?

CVE-2026-31712 is a high-severity vulnerability in Linux, classified under Out-of-bounds Write. CVSS score: 8.3/10. Published 2026-05-01.

How severe is CVE-2026-31712?

High severity. CVSS v3 base score is 8.3 out of 10.

Buffer overflow in Linux

CVE-2026-31712

In the Linux kernel, the following vulnerability has been resolved: ksmbd: require minimum ACE size in smb_check_perm_dacl() Both ACE-walk loops in smb_check_perm_dacl() only guard against an under-sized remaining buffer, not against an…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (18.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H.

Affected products

Linux — versions 6.12.84, 7.1-rc1, 5.15
Linux Linux_kernel

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

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

Frequently asked questions

What is CVE-2026-31712?: CVE-2026-31712 is a high-severity vulnerability in Linux, classified under Out-of-bounds Write. CVSS score: 8.3/10. Published 2026-05-01.
How severe is CVE-2026-31712?: High severity. CVSS v3 base score is 8.3 out of 10.