Vulnerability details
CVE-2026-23372
nfc: rawsock: cancel tx_work before socket teardown
Official description
In the Linux kernel, the following vulnerability has been resolved: nfc: rawsock: cancel tx_work before socket teardown In rawsock_release(), cancel any pending tx_work and purge the write queue before orphaning the socket. rawsock_tx_work runs on the system workqueue and calls nfc_data_exchange which dereferences the NCI device. Without synchronization, tx_work can race with socket and device teardown when a process is killed (e.g. by SIGKILL), leading to use-after-free or leaked references. Set SEND_SHUTDOWN first so that if tx_work is already running it will see the flag and skip transmitting, then use cancel_work_sync to wait for any in-progress execution to finish, and finally purge any remaining queued skbs.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.8High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 3.1 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 23b7869c0fd08d73c9f83a2db88a13312d6198bb ≤ v < cdeed45ce8c92defd057f7d67ee9a69374d8fa16 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 23b7869c0fd08d73c9f83a2db88a13312d6198bb ≤ v < 3ae592ed91bb4b6b51df256b51045c13d2656049 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 23b7869c0fd08d73c9f83a2db88a13312d6198bb ≤ v < 722a28b635ec281bb08a23885223526d8e7d6526 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 23b7869c0fd08d73c9f83a2db88a13312d6198bb ≤ v < 78141b8832e16d80d09cbefb4258612db0777a24 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 23b7869c0fd08d73c9f83a2db88a13312d6198bb ≤ v < edc988613def90c5b558e025b1b423f48007be06 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 23b7869c0fd08d73c9f83a2db88a13312d6198bb ≤ v < da4515fc8263c5933ed605e396af91079806dc45 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 23b7869c0fd08d73c9f83a2db88a13312d6198bb ≤ v < d793458c45df2aed498d7f74145eab7ee22d25aa | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 23b7869c0fd08d73c9f83a2db88a13312d6198bb ≤ v < 9b2d23cd09e1cb56bdf0e4d5614703094159f16c | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem | All | CVEProject cvelistV5 (CNA) |
References and advisories
9- https://git.kernel.org/stable/c/9b2d23cd09e1cb56bdf0e4d5614703094159f16c
- https://git.kernel.org/stable/c/cdeed45ce8c92defd057f7d67ee9a69374d8fa16
- https://git.kernel.org/stable/c/3ae592ed91bb4b6b51df256b51045c13d2656049
- https://git.kernel.org/stable/c/722a28b635ec281bb08a23885223526d8e7d6526
- https://git.kernel.org/stable/c/78141b8832e16d80d09cbefb4258612db0777a24
- https://git.kernel.org/stable/c/edc988613def90c5b558e025b1b423f48007be06
- https://git.kernel.org/stable/c/da4515fc8263c5933ed605e396af91079806dc45
- https://git.kernel.org/stable/c/d793458c45df2aed498d7f74145eab7ee22d25aa
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html
Details
- Published
- 2026-03-25
- Last updated
- 2026-10-15
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
Weaknesses (CWE)
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