#VU96291 Use-after-free in Linux kernel - CVE-2024-43874

Vulnerability identifier: #VU96291

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-2024-43874

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 __sev_snp_shutdown_locked() function in drivers/crypto/ccp/sev-dev.c. A local user can escalate privileges on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.10, 6.10.1, 6.10.2

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External links
https://git.kernel.org/stable/c/bbf2c94503f6a421ed9b79e300d8085810da765d
https://git.kernel.org/stable/c/468e3295774d0edce15f4ae475913b5076dd4f40
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.10.3
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.11

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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.