Use After Free Affecting torvalds/linux package, versions [5.15.81,5.16)[6.0.11,6.1)[6.1,6.1.191)[6.2,6.6.92)[6.7,6.12.29)[6.13,6.14.7)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-20699466
- published10 Oct 2026
- disclosed20 May 2025
- creditUnknown
Introduced: 20 May 2025
CVE-2025-37957 (opens in a new tab)How to fix?
Upgrade torvalds/linux to version 5.16, 6.1, 6.1.191, 6.6.92, 6.12.29, 6.14.7 or higher.
Overview
Affected versions of this package are vulnerable to Use After Free via the kvm_vcpu_reset process. An attacker can gain unauthorized read and write access to sensitive memory regions, including freed host pages and SMRAM, by triggering a sequence involving entering System Management Mode (SMM) and causing consecutive exceptions leading to a triple fault and SHUTDOWN interception. This can result in host kernel crashes, memory corruption, and potential escape from the VM/VMM sandbox to the host or other guests. This is only exploitable if the attacker has access to /dev/kvm or can execute ring-0 code in a guest VM.
Note: The Linux kernel project assigns a CVE to every bug fix it ships, whether or not the bug has been shown to be exploitable. This advisory was generated from that process and has not been individually assessed for exploitability. See the kernel's CVE process documentation: https://github.com/torvalds/linux/blob/master/Documentation/process/cve.rst