CVE-2023-53551
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.
Does this matter?
Lower severity and a low EPSS score (0.15%). 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_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.
- 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
- 0.15% probability · 5th 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/3b24c980dc07be4550a9d1450ed7057f882530e5Patch
- https://git.kernel.org/stable/c/44e004f757a7ae13dfebaadbcfdb1a6f98c10377Patch
- https://git.kernel.org/stable/c/5ec63fdbca604568890c577753c6f66c5b3ef0b5Patch
- https://git.kernel.org/stable/c/c5360eec648bd506afa304ae4a71f82e13d41897Patch
- https://git.kernel.org/stable/c/ec357cd3e8af614855d286dd378725cdc7264df6Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.