CVE-2023-53551

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinuxaba3a8d01d623a5efef48ab8e78752d58d4c90c3 < c5360eec648bd506afa304ae4a71f82e13d41897affected
LinuxLinuxaba3a8d01d623a5efef48ab8e78752d58d4c90c3 < 3b24c980dc07be4550a9d1450ed7057f882530e5affected
LinuxLinuxaba3a8d01d623a5efef48ab8e78752d58d4c90c3 < ec357cd3e8af614855d286dd378725cdc7264df6affected
LinuxLinuxaba3a8d01d623a5efef48ab8e78752d58d4c90c3 < 44e004f757a7ae13dfebaadbcfdb1a6f98c10377affected
LinuxLinuxaba3a8d01d623a5efef48ab8e78752d58d4c90c3 < 5ec63fdbca604568890c577753c6f66c5b3ef0b5affected
LinuxLinux5.8affected
LinuxLinux0 < 5.8unaffected
LinuxLinux5.10.171 <= 5.10.*unaffected
LinuxLinux5.15.97 <= 5.15.*unaffected
LinuxLinux6.1.15 <= 6.1.*unaffected
LinuxLinux6.2.2 <= 6.2.*unaffected
LinuxLinux6.3 <= *unaffected

Weaknesses

References