{"id":"CVE-2026-89867","revision":"9df063618db4408b974b7b0eeb65e01c","records":[{"revision":"9df063618db4408b974b7b0eeb65e01c","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89867","aliases":[],"title":"media: chips-media: wave5: Defer job_finish() only when a DEC_PIC was queued","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: chips-media: wave5: Defer job_finish() only when a DEC_PIC was queued\n\nDecoder instances sharing a VPU also share one v4l2_m2m job slot, released\nwhen the running context calls v4l2_m2m_job_finish(). While draining,\ndevice_run() defers job_finish() once EOS is sent (sent_eos), expecting a\nlater finish_decode() (from a DEC_PIC completion IRQ) to release the slot.\n\nBut the m2m core checks job_ready() only when a job is queued, not when it\nis dispatched. A job queued while draining can run after finish_decode()\nhas already moved the instance to STOP and sent EOS. device_run() then runs\nin STOP, issues no DEC_PIC, yet still skips job_finish() - so no IRQ, no\nfinish_decode(), and the shared slot is leaked, stalling every instance.\nWith several v4l2h264dec instances in parallel, GStreamer hangs at EOS.\n\nTrack whether the run actually queued a DEC_PIC (cmd_issued) and defer\njob_finish() only then. Otherwise finish the job immediately","state":0,"publishedAt":"2026-09-16T10:31:37.185+00:00","modifiedAt":"2026-10-19T08:54:00.501+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"a176ac5e701f1ba30843c0d7e0663a761bf9a61a\",\n                            \"lessThan\": \"63d758d2f9dba836d5ae597d317cde522e817cf9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a176ac5e701f1ba30843c0d7e0663a761bf9a61a\",\n                            \"lessThan\": \"b694ba0a5526a69f78a6924982b1553154ccfd73\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"7.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"7.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.5\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/63d758d2f9dba836d5ae597d317cde522e817cf9","https://git.kernel.org/stable/c/b694ba0a5526a69f78a6924982b1553154ccfd73"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89867","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89867","identifiers":["CVE-2026-89867"]},"retained":false,"historicalAffected":[]}],"coverage":[]}