CVE-2026-89882: Linux

Описание

Оригинално описание

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.

Засегнати продукти

• Linux Linux: c9a59dc2acc72789d5c778af080d1e65af84862c преди 74938f83a8abbee8f502dfb5d94213b2497d1edf; c9a59dc2acc72789d5c778af080d1e65af84862c преди 052c5ed5a1d96a6b24fd50ccda16fc6841ee7ca3
• Linux Linux: 7.0; преди 7.0; 7.2.5 до 7.2.*; от 7.3 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-89882
• https://nvd.nist.gov/vuln/detail/CVE-2026-89882
• https://git.kernel.org/stable/c/74938f83a8abbee8f502dfb5d94213b2497d1edf
• https://git.kernel.org/stable/c/052c5ed5a1d96a6b24fd50ccda16fc6841ee7ca3