What is CVE-2026-46309?

CVE-2026-46309 is a high-severity vulnerability in Linux, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.0/10. Published 2026-06-08.

How severe is CVE-2026-46309?

High severity. CVSS v3 base score is 7.0 out of 10.

Vulnerability in Linux

CVE-2026-46309

In the Linux kernel, the following vulnerability has been resolved: drm/xe/uapi: Reject coh_none PAT index for CPU cached memory in madvise Add validation in xe_vm_madvise_ioctl() to reject PAT indices with XE_COH_NONE coherency mode whe…

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

CVSS v3 metric

CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Linux — versions ada7486c5668db542a7d361268df931aca5b726a, 6.18, 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)
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-2026-46309?: CVE-2026-46309 is a high-severity vulnerability in Linux, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.0/10. Published 2026-06-08.
How severe is CVE-2026-46309?: High severity. CVSS v3 base score is 7.0 out of 10.