NULL pointer dereference in Linux

CVE-2026-23349

In the Linux kernel, the following vulnerability has been resolved: HID: pidff: Fix condition effect bit clearing As reported by MPDarkGuy on discord, NULL pointer dereferences were happening because not all the conditional effects bits were cleared. Properly clear all conditional effect bits from ffbit

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.001 (1.7th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 1.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-23349: held from 0.001 to 0.001.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000

Affected products

  • Linux — versions 7f3d7bc0df4bdc23d31cf0f90b6e20c45129465e, 6.18, 0
  • Linux Kernel — versions 6.18, 7.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-23349?
CVE-2026-23349 is a medium-severity vulnerability in Linux, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2026-03-25.
How severe is CVE-2026-23349?
Medium severity. CVSS v3 base score is 5.5 out of 10.