{"id":"CVE-2026-89724","revision":"f7cc03314aea46a5930fc314df68204b","records":[{"revision":"f7cc03314aea46a5930fc314df68204b","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89724","aliases":[],"title":"media: vicodec: fix out-of-bounds write in FWHT encoder","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: vicodec: fix out-of-bounds write in FWHT encoder\n\nvidioc_s_fmt_vid_out() sizes the encoder CAPTURE buffer from the\ncompressed descriptor pixfmt_fwht, whose sizeimage_mult is 3:\ncoded_w * coded_h * 3 + sizeof(struct fwht_cframe_hdr). fwht_encode_frame()\nencodes one plane per component, and an incompressible plane takes the\nFWHT_FRAME_UNENCODED path in encode_plane(), copying the plane verbatim.\n\nFor a 4-component pixel format all four planes are full resolution\n(width_div == height_div == 1), so a frame that forces every plane\nthrough the unencoded fallback writes\nsizeof(struct fwht_cframe_hdr) + 4 * coded_w * coded_h bytes, overrunning\nthe plane by coded_w * coded_h, which can result in corruption\nof adjacent kernel heap memory.\n\nBump pixfmt_fwht.sizeimage_mult from 3 to 4, matching the largest\ncomponents_num among the supported raw formats, so the capture buffer is\nalways large enough for the unencoded fallback.","state":0,"publishedAt":"2026-09-11T19:46:35.914+00:00","modifiedAt":"2026-10-19T08:51:37.47+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/test-drivers/vicodec/vicodec-core.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"16ecf6dff97ce0194a7126e26159492668d47a7e\",\n                            \"lessThan\": \"f7ae26c100a6c26c2a166d2c41e73188067b36bd\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"16ecf6dff97ce0194a7126e26159492668d47a7e\",\n                            \"lessThan\": \"6ea647e76c44387d5c1c635df4604c2154d9060e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"16ecf6dff97ce0194a7126e26159492668d47a7e\",\n                            \"lessThan\": \"d40838a63f2bd6a3df0a6cdd8ff1d5c6366e8fff\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"16ecf6dff97ce0194a7126e26159492668d47a7e\",\n                            \"lessThan\": \"e21cccc29b840930cd9dcfdf1139658063a681af\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"16ecf6dff97ce0194a7126e26159492668d47a7e\",\n                            \"lessThan\": \"84cfebf7f4229d748cca8eb9c4e1f1c4099d3ab7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"16ecf6dff97ce0194a7126e26159492668d47a7e\",\n                            \"lessThan\": \"8c14472431e27f13661d0db9d837156eaced0ecb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"16ecf6dff97ce0194a7126e26159492668d47a7e\",\n                            \"lessThan\": \"b95315ffc66b39856396c1043618bb4e4d5785ba\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"16ecf6dff97ce0194a7126e26159492668d47a7e\",\n                            \"lessThan\": \"cf4500ebf6fb57bf4ab83c3dd349a40257dbe2a9\",\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/test-drivers/vicodec/vicodec-core.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.270\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.221\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.109\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\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":[{"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/f7ae26c100a6c26c2a166d2c41e73188067b36bd","https://git.kernel.org/stable/c/6ea647e76c44387d5c1c635df4604c2154d9060e","https://git.kernel.org/stable/c/d40838a63f2bd6a3df0a6cdd8ff1d5c6366e8fff","https://git.kernel.org/stable/c/e21cccc29b840930cd9dcfdf1139658063a681af","https://git.kernel.org/stable/c/84cfebf7f4229d748cca8eb9c4e1f1c4099d3ab7","https://git.kernel.org/stable/c/8c14472431e27f13661d0db9d837156eaced0ecb","https://git.kernel.org/stable/c/b95315ffc66b39856396c1043618bb4e4d5785ba","https://git.kernel.org/stable/c/cf4500ebf6fb57bf4ab83c3dd349a40257dbe2a9"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89724","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89724","identifiers":["CVE-2026-89724"]},"retained":false,"historicalAffected":[]}],"coverage":[]}