Use of Externally-Controlled Reference to a Resource in Another Sphere Affecting torvalds/linux package, versions [6.13,6.18.53)
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-21687202
- published24 Oct 2026
- disclosed23 Oct 2026
- creditUnknown
Introduced: 23 Oct 2026
NewCVE-2026-98883 (opens in a new tab)How to fix?
Upgrade torvalds/linux to version 6.18.53 or higher.
Overview
Affected versions of this package are vulnerable to Use of Externally-Controlled Reference to a Resource in Another Sphere in the set_io_from_upio function. An attacker can cause system instability or unexpected behavior by triggering unsupported UART type handling during serial port probing.
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