CVE-2026-31509In the Linux kernel, the following vulnerability has been resolved: nfc: nci: fix circular locking dependency in nci_close_device nci_close_device() flushes rx_wq and tx_wq while holding req_lock.
Updated under an hour ago ()
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In the Linux kernel, the following vulnerability has been resolved: nfc: nci: fix circular locking dependency in nci_close_device nci_close_device() flushes rx_wq and tx_wq while holding req_lock. This causes a circular locking dependency because nci_rx_work() running on rx_wq can end up taking req_lock too: nci_rx_work -> nci_rx_data_packet -> nci_data_exchange_complete -> __sk_destruct -> rawsock_destruct -> nfc_deactivate_target -> nci_deactivate_target -> nci_request -> mutex_lock(&ndev->req_lock) Move the flush of rx_wq after req_lock has been released. This should safe (I think) because NCI_UP has already been cleared and the transport is closed, so the work will see it and return -ENETDOWN. NIPA has been hitting this running the nci selftest with a debug kernel on roughly 4% of the runs.
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-667
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
linux linux_kernel linux:linux_kernel | from 3.2.1 before 5.10.253; from 5.11 before 5.15.203; from 5.16 before 6.1.168; from 6.2 before 6.6.131; from 6.7 before 6.12.80; from 6.13 before 6.18.21; from 6.19 before 6.19.11; 3.2; and 7 more ranges | NVD |
References
- https://git.kernel.org/stable/c/09143c0e8f3b03517e6233aad42f45c794d8df8epatch
- https://git.kernel.org/stable/c/1edc12d2bbcb7a8d0f1088e6fccb9d8c01bb1289patch
- https://git.kernel.org/stable/c/4527025d440ce84bf56e75ce1df2e84cb8178616patch
- https://git.kernel.org/stable/c/5eef9ebec7f5738f12cadede3545c05b34bf5ac3patch
- https://git.kernel.org/stable/c/7ed00a3edc8597fe2333f524401e2889aa1b5edfpatch
- https://git.kernel.org/stable/c/ca54e904a071aa65ef3ad46ba42d51aaac6b73b4patch
- https://git.kernel.org/stable/c/d89b74bf08f067b55c03d7f999ba0a0e73177eb3patch
- https://git.kernel.org/stable/c/eb435d150ca74b4d40f77f1a2266f3636ed64a79patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.