CVE-2026-89882
- Source
- https://cve.org/CVERecord?id=CVE-2026-89882
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89882.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-89882
- Downstream
- Published
- 2026-09-16T10:31:47Z
- Modified
- 2026-09-17T03:47:19Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- media: rkvdec: hevc: guard INTER_REF_PIC_SET_PRED index underflow
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
media: rkvdec: hevc: guard INTER_REF_PIC_SET_PRED index underflow
st_ref_pic_set_prediction() computes the reference RPS index as st_rps_idx - (delta_idx_minus1 + 1) per HEVC spec equation 7-59. Both operands are u8, so when delta_idx_minus1 + 1 exceeds the current index the subtraction wraps and the subsequent array access at calculated_rps_st_sets[ref_rps_idx] reads far out of bounds.
A userspace V4L2 client that can open the RKVDEC m2m decoder can submit an EXT_SPS_ST_RPS control with INTER_REF_PIC_SET_PRED set and delta_idx_minus1 crafted to trigger the underflow.
Reject the entry early when the reference index would underflow.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89882.json" }- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/052c5ed5a1d96a6b24fd50ccda16fc6841ee7ca3
- https://git.kernel.org/stable/c/74938f83a8abbee8f502dfb5d94213b2497d1edf
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89882.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-89882