Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 23b7869c0fd08d73c9f83a2db88a13312d6198bb before 9b2d23cd09e1cb56bdf0e4d5614703094159f16c; affected 23b7869c0fd08d73c9f83a2db88a13312d6198bb before cdeed45ce8c92defd057f7d67ee9a69374d8fa16; affected 23b7869c0fd08d73c9f83a2db88a13312d6198bb before 3ae592ed91bb4b6b51df256b51045c13d2656049; affected 23b7869c0fd08d73c9f83a2db88a13312d6198bb before 722a28b635ec281bb08a23885223526d8e7d6526; affected 23b7869c0fd08d73c9f83a2db88a13312d6198bb before 78141b8832e16d80d09cbefb4258612db0777a24; affected 23b7869c0fd08d73c9f83a2db88a13312d6198bb before edc988613def90c5b558e025b1b423f48007be06; affected 23b7869c0fd08d73c9f83a2db88a13312d6198bb before da4515fc8263c5933ed605e396af91079806dc45; affected 23b7869c0fd08d73c9f83a2db88a13312d6198bb before d793458c45df2aed498d7f74145eab7ee22d25aa |
| Linux / Linux | affected 3.1; unaffected 0 before 3.1; unaffected 5.10.253 through 5.10.*; unaffected 5.15.203 through 5.15.*; unaffected 6.1.167 through 6.1.*; unaffected 6.6.130 through 6.6.*; unaffected 6.12.77 through 6.12.*; unaffected 6.18.17 through 6.18.*; unaffected 6.19.7 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
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
ADP enrichment
No English description supplied.