media: verisilicon: rockchip: guard VPU981 AV1 divisor and tile buffer
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
In the Linux kernel, the following vulnerability has been resolved: media: verisilicon: rockchip: guard VPU981 AV1 divisor and tile buffer rockchip_vpu981_av1_dec_set_tile_info() divides context_update_tile_id by tile_info->tile_cols and writes one descriptor per tile into the tile_info DMA buffer, which holds AV1_MAX_TILES entries; tile_cols and tile_rows come from the bitstream. Guard the division against a zero tile_cols by initialising the context-update values to zero and computing them only when tile_cols is non-zero, and stop the descriptor writes once the tile_info buffer is full. The tile geometry written to the hardware registers is left unmodified; the per-dimension and total tile bounds are enforced by the control validation.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.6.158, 6.12.111, 6.18.53, 7.2.7, 7.3
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 7 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4
- Red Hat OpenShift Container Platform 5
Timeline
- 2026-10-02 Threatist record created from CVE-2026-97578
- 2026-10-03 Alias added: GHSA-cr7v-wxrv-gp29
- 2026-10-03 Fix available: Linux/[email protected], Linux/Linux@8659e5fc21a82e00fb2db1557f2e06f0fca06b90 · CNA
- 2026-10-03 1 new reference · CNA
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-11-06 Affected versions changed · Red Hat
References
Other 5
- https://git.kernel.org/stable/c/8659e5fc21a82e00fb2db1557f2e06f0fca06b90
- https://git.kernel.org/stable/c/7baa7bb1b784c19170df8c99466fa412040eb431
- https://git.kernel.org/stable/c/8f19d869a9f6800547c9ad7ebaf3b94f973dab50
- https://git.kernel.org/stable/c/6b7a281a815ae7c5e7bb2aad039ffea9bc933157
- https://git.kernel.org/stable/c/b84f6533a8ed2fd7b282fc7ab4b8efadc745a89c
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Sources
- CVE-2026-97578 · CVE Program
- CVE-2026-97578 · NVD
- FIRST EPSS
- GHSA-cr7v-wxrv-gp29 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-97578 · Red Hat security data · CC BY 4.0
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