{"id":"CVE-2026-68206","revision":"eb50681b6aeb40feb7397c31f5e28d28","records":[{"revision":"eb50681b6aeb40feb7397c31f5e28d28","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-68206","aliases":[],"title":"media: v4l2-ctrls: validate HEVC active reference counts","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: v4l2-ctrls: validate HEVC active reference counts\n\nHEVC slice parameters are shared stateless V4L2 controls, but the common\nvalidation path does not verify the active L0/L1 reference counts before\ndriver-specific code consumes them.\n\nThe original report came from Cedrus, but the active count bounds are\nnot Cedrus-specific. Validate them in the common HEVC slice control path\nso stateless HEVC drivers get the same basic guarantees as soon as the\ncontrol is queued.\n\nDo not reject ref_idx_l0/ref_idx_l1 entries here. Existing userspace may\nuse out-of-range sentinel values such as 0xff for missing references, and\nsome hardware can use that information for concealment. Keep this common\ncheck limited to the active reference counts.","state":0,"publishedAt":"2026-08-10T12:00:25.309+00:00","modifiedAt":"2026-10-19T20:58:57.229+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/v4l2-core/v4l2-ctrls-core.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"d395a78db9eabd12633b39e05c80e803543b6590\",\n                            \"lessThan\": \"3299c3905f3fb439ebd892658b87bc76c93ae116\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d395a78db9eabd12633b39e05c80e803543b6590\",\n                            \"lessThan\": \"9a998cc1c348769262d433acb7d238c5fac4b2e0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d395a78db9eabd12633b39e05c80e803543b6590\",\n                            \"lessThan\": \"dbaf0e0023e2f9332c5164822def7f80b7d2c5ef\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d395a78db9eabd12633b39e05c80e803543b6590\",\n                            \"lessThan\": \"3068ab802fc98b121dcb451e1f7f4d338ffc7a19\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d395a78db9eabd12633b39e05c80e803543b6590\",\n                            \"lessThan\": \"b01df98a6669d2b67d8aed816021b327fd905998\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d395a78db9eabd12633b39e05c80e803543b6590\",\n                            \"lessThan\": \"afbe4bc252d90a6f8fad869b06d5430f615f22f9\",\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/v4l2-core/v4l2-ctrls-core.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.14\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.14\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.183\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.148\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.101\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.42\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.6\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/3299c3905f3fb439ebd892658b87bc76c93ae116","https://git.kernel.org/stable/c/9a998cc1c348769262d433acb7d238c5fac4b2e0","https://git.kernel.org/stable/c/dbaf0e0023e2f9332c5164822def7f80b7d2c5ef","https://git.kernel.org/stable/c/3068ab802fc98b121dcb451e1f7f4d338ffc7a19","https://git.kernel.org/stable/c/b01df98a6669d2b67d8aed816021b327fd905998","https://git.kernel.org/stable/c/afbe4bc252d90a6f8fad869b06d5430f615f22f9"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-68206","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-68206","identifiers":["CVE-2026-68206"]},"retained":false,"historicalAffected":[]}],"coverage":[]}