Write-what-where Condition Affecting torvalds/linux package, versions [6.7,6.12.111)[6.13,6.18.53)[6.19,7.2.7)
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-20824349
- published11 Oct 2026
- disclosed25 Sept 2026
- creditUnknown
Introduced: 25 Sep 2026
CVE-2026-98039 (opens in a new tab)How to fix?
Upgrade torvalds/linux to version 6.12.111, 6.18.53, 7.2.7 or higher.
Overview
Affected versions of this package are vulnerable to Write-what-where Condition through improper handling of the map_kptr_match_type process. An attacker can achieve arbitrary kernel read and write access by storing a plain allocation or a referenced kernel pointer into a __percpu_kptr map field, which can then be misinterpreted by consumers, potentially leading to relocation into invalid addresses or bypassing destructors.
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