Out-of-bounds read in Linux kernel kvm



| Updated: 2025-05-13
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2024-40953
CWE-ID CWE-125
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Out-of-bounds read

EUVDB-ID: #VU94236

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-40953

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to an out-of-bounds read error within the kvm_vcpu_on_spin() function in virt/kvm/kvm_main.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 4.19 - 6.6.35

CPE2.3 External links

https://git.kernel.org/stable/c/92c77807d938145c7c3350c944ef9f39d7f6017c
https://git.kernel.org/stable/c/a937ef951bba72f48d2402451419d725d70dba20
https://git.kernel.org/stable/c/95c8dd79f3a14df96b3820b35b8399bd91b2be60
https://git.kernel.org/stable/c/49f683b41f28918df3e51ddc0d928cb2e934ccdb
https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.323
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.228
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.169
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.285
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.96
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.10
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.36


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.



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