What is CVE-2026-43239?

CVE-2026-43239 is a high-severity vulnerability in Linux. CVSS score: 8.8/10. Published 2026-05-06.

How severe is CVE-2026-43239?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Linux

CVE-2026-43239

In the Linux kernel, the following vulnerability has been resolved: smb: client: prevent races in ->query_interfaces() It was possible for two query interface works to be concurrently trying to update the interfaces. Prevent this by che…

EPSS: 0.000 (13.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Linux — versions 5.19, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, 7.0
Linux Linux_kernel — versions 5.19

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)

Frequently asked questions

What is CVE-2026-43239?: CVE-2026-43239 is a high-severity vulnerability in Linux. CVSS score: 8.8/10. Published 2026-05-06.
How severe is CVE-2026-43239?: High severity. CVSS v3 base score is 8.8 out of 10.