Riskcovery

CVE-2026-89825

drm/panthor: fix firmware control interface bounds checks

State
Published
Severity
7.8 High
Published
Sep 16, 2026
Updated
Oct 19, 2026
Reserved
Sep 11, 2026

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

drm/panthor: fix firmware control interface bounds checks

panthor_init_cs_iface() and panthor_init_csg_iface() validate firmware control interface offsets with 32-bit arithmetic and the size of the host wrapper structures. The offsets are derived from firmware-provided strides, so the arithmetic can wrap before the bounds check, and the host wrapper size is not the size of the firmware control interface being mapped.

Use 64-bit arithmetic for the computed offsets and validate against the actual firmware control interface structure sizes with subtraction-based bounds checks. Also validate that the shared section is large enough for the global control interface before using it.

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 2718d91816eeed03c09c8abe872e45f59078768c to before 33ae55809aee9b4dca1d00cdee35b527f2bf8626Affected
  • 2718d91816eeed03c09c8abe872e45f59078768c to before 80c9528661c774f899281c9a72011208ff39929eAffected
  • 2718d91816eeed03c09c8abe872e45f59078768c to before 3e5c7cddc0073eef6f9bb373189b11a969f1f6f6Affected
  • 2718d91816eeed03c09c8abe872e45f59078768c to before 6a47f9fd2d970674ed9dedc52fc7ab76fd015785Affected
LinuxLinux
  • 6.10Affected
  • before 6.10Not affected
  • 6.12.110 through 6.12.*Not affected
  • 6.18.51 through 6.18.*Not affected
  • 7.2.5 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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