Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') Affecting torvalds/linux package, versions [6.12.34,6.12.75)[6.15.3,6.16)[6.16,6.18.14)[6.19,6.19.4)
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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-20789702
- published11 Oct 2026
- disclosed9 Jun 2026
- creditUnknown
Introduced: 9 Jun 2026
CVE-2026-46327 (opens in a new tab)How to fix?
Upgrade torvalds/linux to version 6.12.75, 6.16, 6.18.14, 6.19.4 or higher.
Overview
Affected versions of this package are vulnerable to Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in the dm_blk_report_zones function due to an unlocked test for the suspended state of the device. An attacker can achieve kernel heap memory disclosure, arbitrary kernel memory writes, or cause a kernel panic by exploiting a race condition between concurrent zone reporting and device-mapper table activation or revalidation operations.
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