{"id":"CVE-2026-72304","title":"ASoC: SOF: ipc4-control: Fix TOCTOU in sof_ipc4_bytes_put","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: SOF: ipc4-control: Fix TOCTOU in sof_ipc4_bytes_put\n\nIn sof_ipc4_bytes_put(), the copy size is derived from the old\ndata->size in the buffer rather than the incom…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= a062c8899fede2ab5660a817e9b602d3fa280a99 < 266f936db83aee6ca6473bbb06259bda52bf4fc3","Linux >= a062c8899fede2ab5660a817e9b602d3fa280a99 < 4cf6a7ebbf8787393b158b2cc341723e5bebc4a8","Linux >= a062c8899fede2ab5660a817e9b602d3fa280a99 < fb4293173db2d474d8fbc0e5ecf4943e6df2b40e","Linux >= a062c8899fede2ab5660a817e9b602d3fa280a99 < 038406abde0d0883419ec89425ea941ec8bbef95","Linux >= a062c8899fede2ab5660a817e9b602d3fa280a99 < 3ad673e7139cf214afd24321a829aad6575f4163","Linux 6.4"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T18:46:18.980442Z"},"published":"2026-08-15","updated":"2026-10-16","sourceUpdated":"2026-10-16T18:55:16.536Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72304","references":[{"url":"https://git.kernel.org/stable/c/266f936db83aee6ca6473bbb06259bda52bf4fc3"},{"url":"https://git.kernel.org/stable/c/4cf6a7ebbf8787393b158b2cc341723e5bebc4a8"},{"url":"https://git.kernel.org/stable/c/fb4293173db2d474d8fbc0e5ecf4943e6df2b40e"},{"url":"https://git.kernel.org/stable/c/038406abde0d0883419ec89425ea941ec8bbef95"},{"url":"https://git.kernel.org/stable/c/3ad673e7139cf214afd24321a829aad6575f4163"}],"tags":["cve.org"],"epss":0.00163,"epssPercentile":0.05186,"ingestedAt":"2026-10-16T19:46:24.409Z","slug":"CVE-2026-72304","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nASoC: SOF: ipc4-control: Fix TOCTOU in sof_ipc4_bytes_put\n\nIn sof_ipc4_bytes_put(), the copy size is derived from the old\ndata->size in the buffer rather than the incoming new data's size\nfield from ucontrol. If the new data has a different size, the copy\nuses the wrong length: it may truncate valid data or copy stale bytes.\n\nFix by validating and using the incoming data's sof_abi_hdr.size from\nucontrol before copying.\n\n## Affected\n\n- `Linux >= a062c8899fede2ab5660a817e9b602d3fa280a99 < 266f936db83aee6ca6473bbb06259bda52bf4fc3`\n- `Linux >= a062c8899fede2ab5660a817e9b602d3fa280a99 < 4cf6a7ebbf8787393b158b2cc341723e5bebc4a8`\n- `Linux >= a062c8899fede2ab5660a817e9b602d3fa280a99 < fb4293173db2d474d8fbc0e5ecf4943e6df2b40e`\n- `Linux >= a062c8899fede2ab5660a817e9b602d3fa280a99 < 038406abde0d0883419ec89425ea941ec8bbef95`\n- `Linux >= a062c8899fede2ab5660a817e9b602d3fa280a99 < 3ad673e7139cf214afd24321a829aad6575f4163`\n- `Linux 6.4`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}