#VU91054 Use-after-free in Linux kernel - CVE-2023-52847

Vulnerability identifier: #VU91054

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-52847

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the bttv_remove() function in drivers/media/pci/bt8xx/bttv-driver.c. A local user can escalate privileges on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/bbc3b8dd2cb7817e703f112d988e4f4728f0f2a9
https://git.kernel.org/stable/c/b35fdade92c5058a5e727e233fe263b828de2c9a
https://git.kernel.org/stable/c/2f3d9198cdae1cb079ec8652f4defacd481eab2b
https://git.kernel.org/stable/c/51c94256a83fe4e17406c66ff3e1ad7d242d8574
https://git.kernel.org/stable/c/20568d06f6069cb835e05eed432edf962645d226
https://git.kernel.org/stable/c/1871014d6ef4812ad11ef7d838d73ce09d632267
https://git.kernel.org/stable/c/847599fffa528b2cdec4e21b6bf7586dad982132
https://git.kernel.org/stable/c/bd5b50b329e850d467e7bcc07b2b6bde3752fbda

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.