Use After Free Affecting torvalds/linux package, versions [4.14,6.18.57)[6.19,7.2.6)
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-20824209
- published11 Oct 2026
- disclosed17 Sept 2026
- creditUnknown
Introduced: 17 Sep 2026
CVE-2026-93099 (opens in a new tab)How to fix?
Upgrade torvalds/linux to version 6.18.57, 7.2.6 or higher.
Overview
Affected versions of this package are vulnerable to Use After Free in the mbm_handle_overflow and cqm_handle_limbo worker processes. An attacker can trigger access to freed memory by causing a worker to be blocked while waiting for cpus_read_lock, during which the associated domain may be freed by the architecture under cpus_write_lock. When the worker resumes, it may dereference memory that has already been freed, potentially leading to system instability or further exploitation.
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