Improper Validation of Array Index Affecting torvalds/linux package, versions [4.15,6.12.20)[6.13,6.13.8)
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-20698822
- published10 Oct 2026
- disclosed1 Apr 2025
- creditUnknown
Introduced: 1 Apr 2025
CVE-2025-21985 (opens in a new tab)How to fix?
Upgrade torvalds/linux to version 6.12.20, 6.13.8 or higher.
Overview
Affected versions of this package are vulnerable to Improper Validation of Array Index through improper validation of array indices in the hpo_stream_to_link_encoder_mapping and disp_cfg_stream_location processes. An attacker can achieve kernel heap memory corruption and potentially escalate privileges or cause denial of service by issuing crafted atomic commits with specific plane or stream assignments via the DRM atomic modeset ioctl interface.
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