CVE-2026-23372
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 23b7869c0fd08d73c9f83a2db88a13312d6198bb < 9b2d23cd09e1cb56bdf0e4d5614703094159f16c | affected |
| Linux | Linux | 23b7869c0fd08d73c9f83a2db88a13312d6198bb < cdeed45ce8c92defd057f7d67ee9a69374d8fa16 | affected |
| Linux | Linux | 23b7869c0fd08d73c9f83a2db88a13312d6198bb < 3ae592ed91bb4b6b51df256b51045c13d2656049 | affected |
| Linux | Linux | 23b7869c0fd08d73c9f83a2db88a13312d6198bb < 722a28b635ec281bb08a23885223526d8e7d6526 | affected |
| Linux | Linux | 23b7869c0fd08d73c9f83a2db88a13312d6198bb < 78141b8832e16d80d09cbefb4258612db0777a24 | affected |
| Linux | Linux | 23b7869c0fd08d73c9f83a2db88a13312d6198bb < edc988613def90c5b558e025b1b423f48007be06 | affected |
| Linux | Linux | 23b7869c0fd08d73c9f83a2db88a13312d6198bb < da4515fc8263c5933ed605e396af91079806dc45 | affected |
| Linux | Linux | 23b7869c0fd08d73c9f83a2db88a13312d6198bb < d793458c45df2aed498d7f74145eab7ee22d25aa | affected |
| Linux | Linux | 3.1 | affected |
| Linux | Linux | 0 < 3.1 | unaffected |
| Linux | Linux | 5.10.253 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.203 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.167 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.130 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.77 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.17 <= 6.18.* | unaffected |
| Linux | Linux | 6.19.7 <= 6.19.* | unaffected |
| Linux | Linux | 7.0 <= * | unaffected |
Weaknesses
References
- 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
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.