CVE-2026-89826
- Source
- https://cve.org/CVERecord?id=CVE-2026-89826
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89826.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-89826
- Downstream
- Published
- 2026-09-16T10:30:58Z
- Modified
- 2026-09-18T03:48:33Z
- Severity
-
- 7.1 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H CVSS Calculator
- Summary
- drm/panthor: harden firmware build-info bounds checks
- Details
-
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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89826.json" }- References
-
- https://git.kernel.org/stable/c/5516f1acfd07564361cf306cc90a8e513df0f096
- https://git.kernel.org/stable/c/6ae19dce3e8c13ae73590b3f4311abe9f96bbae8
- https://git.kernel.org/stable/c/8321b093fa6c297b80586460ce6914d9655df170
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89826.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-89826
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git