ASoC: SOF: ipc4-control: Fix TOCTOU in sof_ipc4_bytes_put
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.8epss 0.2%
exploitation probability
0.2%top 94% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/038406abde0d0883419ec89425ea941ec8bbef95https://git.kernel.org/stable/c/266f936db83aee6ca6473bbb06259bda52bf4fc3https://git.kernel.org/stable/c/3ad673e7139cf214afd24321a829aad6575f4163https://git.kernel.org/stable/c/4cf6a7ebbf8787393b158b2cc341723e5bebc4a8https://git.kernel.org/stable/c/fb4293173db2d474d8fbc0e5ecf4943e6df2b40e