Description
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.
Product status
aba3a8d01d623a5efef48ab8e78752d58d4c90c3 before c5360eec648bd506afa304ae4a71f82e13d41897
aba3a8d01d623a5efef48ab8e78752d58d4c90c3 before 3b24c980dc07be4550a9d1450ed7057f882530e5
aba3a8d01d623a5efef48ab8e78752d58d4c90c3 before ec357cd3e8af614855d286dd378725cdc7264df6
aba3a8d01d623a5efef48ab8e78752d58d4c90c3 before 44e004f757a7ae13dfebaadbcfdb1a6f98c10377
aba3a8d01d623a5efef48ab8e78752d58d4c90c3 before 5ec63fdbca604568890c577753c6f66c5b3ef0b5
5.8
Any version before 5.8
5.10.171
5.15.97
6.1.15
6.2.2
6.3
References
git.kernel.org/...c/c5360eec648bd506afa304ae4a71f82e13d41897
git.kernel.org/...c/3b24c980dc07be4550a9d1450ed7057f882530e5
git.kernel.org/...c/ec357cd3e8af614855d286dd378725cdc7264df6
git.kernel.org/...c/44e004f757a7ae13dfebaadbcfdb1a6f98c10377
git.kernel.org/...c/5ec63fdbca604568890c577753c6f66c5b3ef0b5
