CVE-2023-53356
usb: gadget: u_serial: Add null pointer check in gserial_suspend
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Description
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
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/2788a3553f7497075653210b42e2aeb6ba95e28e
- https://git.kernel.org/stable/c/a8ea7ed644cbf6314b5b0136b5398754b549fb8f
- https://git.kernel.org/stable/c/e60a827ac074ce6bd58305fe5a86afab5fce6a04
- https://git.kernel.org/stable/c/374447e3367767156405bedd230c5d391f4b7962
- https://git.kernel.org/stable/c/2f6ecb89fe8feb2b60a53325b0eeb9866d88909a
References (5)
SSVC — Action Prioritization
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Quick Info
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