HIGH 7.8 NVD
CVE-2026-89882
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_predictio
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.
References
- https://git.kernel.org/stable/c/052c5ed5a1d96a6b24fd50ccda16fc6841ee7ca3
- https://git.kernel.org/stable/c/74938f83a8abbee8f502dfb5d94213b2497d1edf
This high severity vulnerability with a CVSS score of 7.8 was published on 2026-09-16 via NVD.
vulnfeed aggregates 14391 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.