Vulnerability identifier: #VU94324

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-40989

CWE-ID: CWE-20

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 perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the vgic_v3_free_redist_region() and vgic_v3_set_redist_base() functions in arch/arm64/kvm/vgic/vgic-mmio-v3.c, within the kvm_vgic_dist_destroy() function in arch/arm64/kvm/vgic/vgic-init.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel:

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External links
http://git.kernel.org/stable/c/68df4fc449fcc24347209e500ce26d5816705a77
http://git.kernel.org/stable/c/48bb62859d47c5c4197a8c01128d0fa4f46ee58c
http://git.kernel.org/stable/c/152b4123f21e6aff31cea01158176ad96a999c76
http://git.kernel.org/stable/c/0d92e4a7ffd5c42b9fa864692f82476c0bf8bcc8

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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.