Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: u_serial: Add null pointer check in gserial_resume Consider a case where gserial_disconnect has already cleared gser->ioport. And if a wakeup interrupt triggers afterwards, gserial_resume gets called, which will lead to accessing of gser->ioport and thus causing null pointer dereference.Add a null pointer check to prevent this. Added a static spinlock to prevent gser->ioport from becoming null after the newly added check.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected aba3a8d01d623a5efef48ab8e78752d58d4c90c3 before c5360eec648bd506afa304ae4a71f82e13d41897; affected aba3a8d01d623a5efef48ab8e78752d58d4c90c3 before 3b24c980dc07be4550a9d1450ed7057f882530e5; affected aba3a8d01d623a5efef48ab8e78752d58d4c90c3 before ec357cd3e8af614855d286dd378725cdc7264df6; affected aba3a8d01d623a5efef48ab8e78752d58d4c90c3 before 44e004f757a7ae13dfebaadbcfdb1a6f98c10377; affected aba3a8d01d623a5efef48ab8e78752d58d4c90c3 before 5ec63fdbca604568890c577753c6f66c5b3ef0b5 |
| Linux / Linux | affected 5.8; unaffected 0 before 5.8; unaffected 5.10.171 through 5.10.*; unaffected 5.15.97 through 5.15.*; unaffected 6.1.15 through 6.1.*; unaffected 6.2.2 through 6.2.*; unaffected 6.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/c5360eec648bd506afa304ae4a71f82e13d41897
- https://git.kernel.org/stable/c/3b24c980dc07be4550a9d1450ed7057f882530e5
- https://git.kernel.org/stable/c/ec357cd3e8af614855d286dd378725cdc7264df6
- https://git.kernel.org/stable/c/44e004f757a7ae13dfebaadbcfdb1a6f98c10377
- https://git.kernel.org/stable/c/5ec63fdbca604568890c577753c6f66c5b3ef0b5