CVE-2026-23167
Severity
4.7MEDIUM
EPSS
0.0%
top 97.55%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedFeb 14
Latest updateApr 13
Description
In the Linux kernel, the following vulnerability has been resolved:
nfc: nci: Fix race between rfkill and nci_unregister_device().
syzbot reported the splat below [0] without a repro.
It indicates that struct nci_dev.cmd_wq had been destroyed before
nci_close_device() was called via rfkill.
nci_dev.cmd_wq is only destroyed in nci_unregister_device(), which
(I think) was called from virtual_ncidev_close() when syzbot close()d
an fd of virtual_ncidev.
The problem is that nci_unregister_device…
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.0 | Impact: 3.6
Affected Packages3 packages
▶CVEListV5linux/linux6a2968aaf50c7a22fced77a5e24aa636281efca8 — cd4412d5905ee580e96c48360dc98fcd9e6f3208+7
Patches
🔴Vulnerability Details
4VulDB▶
Linux Kernel up to 6.18.8 nci_unregister_device allocation of resources (Nessus ID 299320 / WID-SEC-2026-0421)↗2026-04-13
OSV▶
CVE-2026-23167: In the Linux kernel, the following vulnerability has been resolved: nfc: nci: Fix race between rfkill and nci_unregister_device()↗2026-02-14
GHSA▶
GHSA-mg8f-6pj8-cf5j: In the Linux kernel, the following vulnerability has been resolved:
nfc: nci: Fix race between rfkill and nci_unregister_device()↗2026-02-14