Improper Privilege Management Affecting torvalds/linux package, versions [6.0,6.1.188)[6.2,6.6.157)[6.7,6.12.110)[6.13,6.18.51)[6.19,7.2.5)
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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- published11 Oct 2026
- disclosed16 Sept 2026
- creditUnknown
Introduced: 16 Sep 2026
CVE-2026-89959 (opens in a new tab)How to fix?
Upgrade torvalds/linux to version 6.1.188, 6.6.157, 6.12.110, 6.18.51, 7.2.5 or higher.
Overview
Affected versions of this package are vulnerable to Improper Privilege Management in the vfio_ap_mdev_cfg_remove process. An attacker can gain unauthorized access to cryptographic control domains and manipulate or disclose sensitive key material by exploiting leftover access rights after control domains are removed from the host configuration. This can allow continued issuance of AP commands to domains that should no longer be accessible, potentially corrupting or destroying cryptographic state and denying services to other guests or the host.
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