Bug 2541111 (CVE-2026-97580)

Summary: CVE-2026-97580 kernel: media: rkvdec: bound HEVC tile loops and PPS id to the array capacity
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: akhatavk, aos-team-art-private, asdas, dpaolell, jdelft, jupierce, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhel-process-autobot, sghai, sidsharm, suppawar, vlaad, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in the Linux kernel's Rockchip video decoder (rkvdec) driver. The driver fails to properly validate the bounds of High Efficiency Video Coding (HEVC) tile dimensions and Picture Parameter Set (PPS) identifiers received from untrusted input. A local attacker could exploit this vulnerability by submitting specially crafted video stream parameters, causing an out-of-bounds write into kernel memory. This issue primarily leads to memory corruption and a system crash, resulting in a Denial of Service (DoS).
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2026-09-25 10:49:25 UTC 
In the Linux kernel, the following vulnerability has been resolved:

media: rkvdec: bound HEVC tile loops and PPS id to the array capacity

compute_tiles_uniform() and compute_tiles_non_uniform() loop over
num_tile_columns_minus1 + 1 / num_tile_rows_minus1 + 1 entries, and
assemble_hw_pps() writes one COLUMN_WIDTH / ROW_HEIGHT register per tile
and indexes priv_tbl->param_set[] by pic_parameter_set_id, all taken from
the untrusted PPS. Use the bounded v4l2_hevc_pps_num_tile_columns() /
v4l2_hevc_pps_num_tile_rows() helpers for the tile loops, and bail out of
assemble_hw_pps() before indexing priv_tbl->param_set[] with an
out-of-range pic_parameter_set_id, so the writes stay within the hardware
tables.
Comment 1 gkamathe 2026-09-29 05:52:51 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97580.mbox