CVE-2026-72304

Summary

In the Linux kernel, the following vulnerability has been resolved:

ASoC: SOF: ipc4-control: Fix TOCTOU in sof_ipc4_bytes_put

In sof_ipc4_bytes_put(), the copy size is derived from the old data->size in the buffer rather than the incoming new data's size field from ucontrol. If the new data has a different size, the copy uses the wrong length: it may truncate valid data or copy stale bytes.

Fix by validating and using the incoming data's sof_abi_hdr.size from ucontrol before copying.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxa062c8899fede2ab5660a817e9b602d3fa280a99 < 266f936db83aee6ca6473bbb06259bda52bf4fc3affected
LinuxLinuxa062c8899fede2ab5660a817e9b602d3fa280a99 < 4cf6a7ebbf8787393b158b2cc341723e5bebc4a8affected
LinuxLinuxa062c8899fede2ab5660a817e9b602d3fa280a99 < fb4293173db2d474d8fbc0e5ecf4943e6df2b40eaffected
LinuxLinuxa062c8899fede2ab5660a817e9b602d3fa280a99 < 038406abde0d0883419ec89425ea941ec8bbef95affected
LinuxLinuxa062c8899fede2ab5660a817e9b602d3fa280a99 < 3ad673e7139cf214afd24321a829aad6575f4163affected
LinuxLinux6.4affected
LinuxLinux0 < 6.4unaffected
LinuxLinux6.6.145 <= 6.6.*unaffected
LinuxLinux6.12.97 <= 6.12.*unaffected
LinuxLinux6.18.40 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References