CVE-2026-72301

Summary

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

ASoC: SOF: ipc3-control: Fix TOCTOU in bytes_put and bytes_get

In sof_ipc3_bytes_put(), the size used for the memcpy is derived from the old data->size already in the buffer, not the incoming new data's size field. If the new data has a different size, the copy length is wrong: it may truncate valid data or copy stale bytes.

Similarly, sof_ipc3_bytes_get() checks data->size against max_size without accounting for the sizeof(struct sof_ipc_ctrl_data) offset of the flex array within the allocation.

Fix bytes_put to validate and use the incoming data's sof_abi_hdr.size from ucontrol before copying. Fix bytes_get to subtract sizeof(*cdata) from the bounds check to match the actual available space.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux544ac8858f249950b4d99c68e538cdc07300528f < 8bd715a9d882fe1993bb2aec5eff89fffa946592affected
LinuxLinux544ac8858f249950b4d99c68e538cdc07300528f < 0dce240145f47545d2e4b18c6d58033b83e1fd0eaffected
LinuxLinux544ac8858f249950b4d99c68e538cdc07300528f < ed4f758f34be4c32e02933ac4fa044589d9c1c16affected
LinuxLinux544ac8858f249950b4d99c68e538cdc07300528f < 0c4fbdaca225b97122b61b68c5353caa33a253c3affected
LinuxLinux544ac8858f249950b4d99c68e538cdc07300528f < 92f90917413bdd6078fefff6f6c83a07bf870b04affected
LinuxLinux544ac8858f249950b4d99c68e538cdc07300528f < 1f97760417b5faa60e9642fd0ed61eb17d0b1b39affected
LinuxLinux5.18affected
LinuxLinux0 < 5.18unaffected
LinuxLinux6.1.178 <= 6.1.*unaffected
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