What is CVE-2026-43497?

CVE-2026-43497 is a high-severity vulnerability in Linux, classified under Use After Free. CVSS score: 7.3/10. Published 2026-05-21.

How severe is CVE-2026-43497?

High severity. CVSS v3 base score is 7.3 out of 10.

Use After Free in Linux

CVE-2026-43497

In the Linux kernel, the following vulnerability has been resolved: fbdev: udlfb: add vm_ops to dlfb_ops_mmap to prevent use-after-free dlfb_ops_mmap() uses remap_pfn_range() to map vmalloc framebuffer pages to userspace but sets no vm_o…

Vulnerability class: Use-After-Free

EPSS: 0.001 (1.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.

Affected products

Linux — versions 7.1, 7.1-rc3, 7.0.7
Linux Linux_kernel — versions 7.1

Weakness classification (CWE)

CWE-416 — Use After Free

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-2026-43497?: CVE-2026-43497 is a high-severity vulnerability in Linux, classified under Use After Free. CVSS score: 7.3/10. Published 2026-05-21.
How severe is CVE-2026-43497?: High severity. CVSS v3 base score is 7.3 out of 10.