CVE-2026-68229
HighCVSS 7.1Exploitation Probability (EPSS)
Low risk6th percentile - higher than 6% of all known CVEs
Summary
In the Linux kernel, the cedrus driver has a bug where invalid indices in H.264 reference lists can cause out-of-bounds reads of the DPB array. The fix skips such entries.
Risk Assessment
The risk includes potential memory safety violation, leading to system crashes or unpredictable decoder behavior.
Recommendation
Update the Linux kernel to a version containing the fix that skips invalid reference list entries.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: media: cedrus: skip invalid H.264 reference list entries Cedrus consumes H.264 ref_pic_list0/ref_pic_list1 entries from the stateless slice control and later uses their indices to look up decode->dpb[] in _cedrus_write_ref_list(). Rejecting such controls in cedrus_try_ctrl() would break existing userspace, since stateless H.264 reference lists may legitimately carry out-of-range indices for missing references. Instead, guard the actual DPB lookup in Cedrus and skip entries whose indices do not fit the fixed V4L2_H264_NUM_DPB_ENTRIES array. This keeps the fix local to the driver use site and avoids out-of-bounds reads from malformed or unsupported reference list entries.