CVE-2023-53356
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.
Does this matter?
Lower severity and a low EPSS score (0.18%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.18% probability · 8th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/2788a3553f7497075653210b42e2aeb6ba95e28ePatch
- https://git.kernel.org/stable/c/2f6ecb89fe8feb2b60a53325b0eeb9866d88909aPatch
- https://git.kernel.org/stable/c/374447e3367767156405bedd230c5d391f4b7962Patch
- https://git.kernel.org/stable/c/a8ea7ed644cbf6314b5b0136b5398754b549fb8fPatch
- https://git.kernel.org/stable/c/e60a827ac074ce6bd58305fe5a86afab5fce6a04Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.