{"id":"CVE-2026-72301","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-72301","summary":"ASoC: SOF: ipc3-control: Fix TOCTOU in bytes_put and bytes_get","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: SOF: ipc3-control: Fix TOCTOU in bytes_put and bytes_get\n\nIn sof_ipc3_bytes_put(), the size used for the memcpy is derived from\nthe old data->size already in the buffer, not the incoming new data's\nsize field. If the new data has a different size, the copy length is\nwrong: it may truncate valid data or copy stale bytes.\n\nSimilarly, sof_ipc3_bytes_get() checks data->size against max_size\nwithout accounting for the sizeof(struct sof_ipc_ctrl_data) offset\nof the flex array within the allocation.\n\nFix bytes_put to validate and use the incoming data's sof_abi_hdr.size\nfrom ucontrol before copying. Fix bytes_get to subtract sizeof(*cdata)\nfrom the bounds check to match the actual available space.","published":"2026-08-15T05:55:20.430Z","modified":"2026-08-18T03:56:40.870197381Z","cvss":{"score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"6.1.178"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0c4fbdaca225b97122b61b68c5353caa33a253c3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0dce240145f47545d2e4b18c6d58033b83e1fd0e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1f97760417b5faa60e9642fd0ed61eb17d0b1b39"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8bd715a9d882fe1993bb2aec5eff89fffa946592"},{"type":"WEB","url":"https://git.kernel.org/stable/c/92f90917413bdd6078fefff6f6c83a07bf870b04"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ed4f758f34be4c32e02933ac4fa044589d9c1c16"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72301.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72301"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-18T03:56:40.870197381Z"}}