Buffer Overflow Affecting torvalds/linux package, versions [6.11,6.18.35)[6.19,7.0.12)
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-20789973
- published11 Oct 2026
- disclosed9 Jun 2026
- creditUnknown
Introduced: 9 Jun 2026
CVE-2026-46317 (opens in a new tab)How to fix?
Upgrade torvalds/linux to version 6.18.35, 7.0.12 or higher.
Overview
Affected versions of this package are vulnerable to Buffer Overflow through the improper handling of the nested_mmus array during concurrent operations involving memory management and virtual CPU initialization. An attacker can achieve arbitrary code execution, kernel memory disclosure, and host kernel compromise by racing the reallocation and freeing of the nested_mmus array with memory unmapping operations from userspace via KVM and memory-management ioctls.
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