{"id":"CVE-2026-93280","title":"In the Linux kernel, the following vulnerability has been resolved:\n\ngreybus: audio: bound the topology section sizes against the fetched size\n\ngb_audio_gb_get_topology() fetches a topology blob of a module-supplied\nsize, and gbaudio_tpl…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ngreybus: audio: bound the topology section sizes against the fetched size\n\ngb_audio_gb_get_topology() fetches a topology blob of a module-supplied\nsize, and gbaudio_tpl…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= 184992e305f1de3a3d5fa446da3a2bc76be7c54a < ba86de9f7b0d7903d2df5ea2373e34d8ca3fc43e","Linux >= 184992e305f1de3a3d5fa446da3a2bc76be7c54a < dd5593aee0a0fb353e1164aff7b65e563fe1f232","Linux >= 184992e305f1de3a3d5fa446da3a2bc76be7c54a < 6f764363b3173d805be11e59a8f23ecee2d420d5","Linux >= 184992e305f1de3a3d5fa446da3a2bc76be7c54a < 52daf9de692ebac813d110eb1e677dc0e1f4a5ab","Linux >= 184992e305f1de3a3d5fa446da3a2bc76be7c54a < d0f6eaba60705bacd9bb4ce48eab50ef3f546777","Linux >= 184992e305f1de3a3d5fa446da3a2bc76be7c54a < c9191f2e2f35f1209eb2dc24b31129dd47b48c16","Linux >= 184992e305f1de3a3d5fa446da3a2bc76be7c54a < cfcc5a41a9664eb68023aae4cd0d485b256bd7c7","Linux >= 184992e305f1de3a3d5fa446da3a2bc76be7c54a < 33d8c7b794d2a30637c9d3fcb478f1d3222bef1e","Linux 4.9"],"published":"2026-09-24","updated":"2026-09-25","sourceUpdated":"2026-09-25T05:17:01.627","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93280","references":[{"url":"https://git.kernel.org/stable/c/33d8c7b794d2a30637c9d3fcb478f1d3222bef1e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/52daf9de692ebac813d110eb1e677dc0e1f4a5ab","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6f764363b3173d805be11e59a8f23ecee2d420d5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ba86de9f7b0d7903d2df5ea2373e34d8ca3fc43e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c9191f2e2f35f1209eb2dc24b31129dd47b48c16","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cfcc5a41a9664eb68023aae4cd0d485b256bd7c7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d0f6eaba60705bacd9bb4ce48eab50ef3f546777","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/dd5593aee0a0fb353e1164aff7b65e563fe1f232","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-24T16:47:15.842Z","slug":"CVE-2026-93280","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ngreybus: audio: bound the topology section sizes against the fetched size\n\ngb_audio_gb_get_topology() fetches a topology blob of a module-supplied\nsize, and gbaudio_tplg_parse_data() then walks it by adding the\nmodule-supplied size_dais, size_controls and size_widgets fields to\nform the control, widget and route section offsets. Those le32 sizes\nare never checked against the fetched blob, so a module reporting a\nsmall topology size but large section sizes makes the offsets point\npast the allocation, and parsing reads out of bounds.\n\nReject a topology whose section sizes do not fit within the fetched\nsize before it is parsed.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":210529,"id":"CVE-2026-93280","ts":1790316054598,"field":"cvss","old":null,"new":"8.8"},{"seq":210528,"id":"CVE-2026-93280","ts":1790316054598,"field":"severity","old":"none","new":"high"}]}