Use-after-free in Linux kernel x86 kvm

1) Use-after-free

EUVDB-ID: #VU109511

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-2025-37957

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

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 shutdown_interception() function in arch/x86/kvm/svm/svm.c, within the kvm_smm_changed() function in arch/x86/kvm/smm.c. A local user can escalate privileges on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/a2620f8932fa9fdabc3d78ed6efb004ca409019f
https://git.kernel.org/stable/c/d362b21fefcef7eda8f1cd78a5925735d2b3287c
https://git.kernel.org/stable/c/e9b28bc65fd3a56755ba503258024608292b4ab1

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.