CVE-2023-53356

Summary

In the Linux kernel, the following vulnerability has been resolved:

usb: gadget: u_serial: Add null pointer check in gserial_suspend

Consider a case where gserial_disconnect has already cleared gser->ioport. And if gserial_suspend gets called afterwards, it will lead to accessing of gser->ioport and thus causing null pointer dereference.

Avoid this by adding a null pointer check. Added a static spinlock to prevent gser->ioport from becoming null after the newly added null pointer check.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxaba3a8d01d623a5efef48ab8e78752d58d4c90c3 < 2788a3553f7497075653210b42e2aeb6ba95e28eaffected
LinuxLinuxaba3a8d01d623a5efef48ab8e78752d58d4c90c3 < a8ea7ed644cbf6314b5b0136b5398754b549fb8faffected
LinuxLinuxaba3a8d01d623a5efef48ab8e78752d58d4c90c3 < e60a827ac074ce6bd58305fe5a86afab5fce6a04affected
LinuxLinuxaba3a8d01d623a5efef48ab8e78752d58d4c90c3 < 374447e3367767156405bedd230c5d391f4b7962affected
LinuxLinuxaba3a8d01d623a5efef48ab8e78752d58d4c90c3 < 2f6ecb89fe8feb2b60a53325b0eeb9866d88909aaffected
LinuxLinux5.8affected
LinuxLinux0 < 5.8unaffected
LinuxLinux5.10.188 <= 5.10.*unaffected
LinuxLinux5.15.121 <= 5.15.*unaffected
LinuxLinux6.1.39 <= 6.1.*unaffected
LinuxLinux6.4.4 <= 6.4.*unaffected
LinuxLinux6.5 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References