CVE-2024-35954 scsi: sg: Avoid sg device teardown race
A race condition in the Linux kernel SCSI generic driver causes a null pointer dereference, leading to a kernel crash and denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-35954?
CVE-2024-35954 is a high-severity vulnerability in Linux kernel, published on 20 May 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
scsi: sg: Avoid sg device teardown race
sg_remove_sfp_usercontext() must not use sg_device_destroy() after calling scsi_device_put().
sg_device_destroy() is accessing the parent scsi_device request_queue which will already be set to NULL when the preceding call to scsi_device_put() removed the last reference to the parent scsi_device.
The resulting NULL pointer exception will then crash the kernel.
Weakness: CWE-476
Which versions are affected by CVE-2024-35954?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-35954?
Apply the vendor's patch.
Is CVE-2024-35954 being exploited?
There is no known exploitation of CVE-2024-35954 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-35954, DEBIAN-CVE-2024-35954, GHSA-v35f-xcmj-3g2x, UBUNTU-CVE-2024-35954.