Use of Uninitialized Variable Affecting torvalds/linux package, versions [6.18,]
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-21415428
- published22 Oct 2026
- disclosed21 Oct 2026
- creditUnknown
Introduced: 21 Oct 2026
NewCVE-2026-98869 (opens in a new tab)How to fix?
There is no fixed version for torvalds/linux.
Overview
Affected versions of this package are vulnerable to Use of Uninitialized Variable due to improper tracking of register upper half initialization in the BPF verifier. An attacker can inject arbitrary values into the upper half of a register by exploiting verification paths that lack proper zero extension marking.
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