CVE-2026-97577 media: verisilicon: rockchip: reject AV1 frames exceeding the tile capacity
A missing bounds check in the Rockchip AV1 decoder allows out-of-bounds reads and potential memory corruption when processing malicious video frames.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-97577?
CVE-2026-97577 is a high-severity memory corruption vulnerability in Linux, published on 25 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
media: verisilicon: rockchip: reject AV1 frames exceeding the tile capacity
rockchip_vpu981_av1_dec_set_tile_info() indexes the tile group entry array by tile1 * tile_cols + tile0, reading up to tile_cols * tile_rows entries, lays out one descriptor per tile in the AV1_MAX_TILES tile_info buffer, and programs the real tile_cols / tile_rows into the hardware.
The tile group entry control is a dynamic array sized to the number of entries userspace submitted, independent of tile_cols / tile_rows, so a frame that claims more tiles than entries reads past the array. A frame that claims more than AV1_MAX_TILES tiles also leaves the hardware programmed for more tiles than the descriptor buffer holds.
Reject both in prepare_run(): tile_cols * tile_rows must not exceed the submitted entry count or AV1_MAX_TILES. The entry count is read via v4l2_ctrl_find() (ctrl->elems). This mirrors the bound the mediatek AV1 decoder already enforces.
Which versions are affected by CVE-2026-97577?
How do I fix CVE-2026-97577?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-97577 being exploited?
There is no known exploitation of CVE-2026-97577 in the wild and no public exploit code.
Sources
Also known as AZL-110473, BELL-CVE-2026-97577, DEBIAN-CVE-2026-97577, GHSA-jj87-p9c8-ffw2, UBUNTU-CVE-2026-97577.