Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/panthor: harden firmware build-info bounds checks panthor_fw_read_build_info() checks whether the metadata range fits in the firmware image with hdr.meta_start + hdr.meta_size. Both fields are u32, so the addition can wrap and let an out-of-bounds range pass validation. The function also reads the "git_sha: " prefix without first checking that the metadata is long enough, and meta_size == 0 can underflow the NULL terminator index. Use subtraction-based bounds checking and reject metadata that is too short to contain the expected prefix and trailing NULL byte.
CVSS Score
HIGH
References
- https://git.kernel.org/stable/c/5516f1acfd07564361cf306cc90a8e513df0f096
- https://git.kernel.org/stable/c/6ae19dce3e8c13ae73590b3f4311abe9f96bbae8
- https://git.kernel.org/stable/c/8321b093fa6c297b80586460ce6914d9655df170
FAQ
What is CVE-2026-89826?
CVE-2026-89826 is a vulnerability with a CVSS score of 7.1 (HIGH). In the Linux kernel, the following vulnerability has been resolved: drm/panthor: harden firmware build-info bounds checks panthor_fw_read_build_info() checks whether the metadata range fits in the f...
How severe is CVE-2026-89826?
CVE-2026-89826 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-89826?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.