ASoC: SOF: ipc3-control: Fix heap overflow in bytes_ext put/get
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.1.184, 6.6.145, 6.12.97, 6.18.40, 7.1.5
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
In the Linux kernel, the following vulnerability has been resolved: ASoC: SOF: ipc3-control: Fix heap overflow in bytes_ext put/get The ipc_control_data buffer is allocated as kzalloc(max_size), where max_size covers the entire struct sof_ipc_ctrl_data including its flexible array payload. However, the bounds checks in bytes_ext_put and _bytes_ext_get compared user data lengths against max_size directly, ignoring that cdata->data sits at an offset of sizeof(struct sof_ipc_ctrl_data) bytes into the allocation. This allowed writing up to sizeof(struct sof_ipc_ctrl_data) bytes past the end of the heap buffer from unprivileged userspace via the ALSA TLV kcontrol interface, and similarly allowed over-reading adjacent heap data on the get path. Fix all bounds checks to subtract sizeof(*cdata) from max_size so they reflect the actual space available at the cdata->data offset. Also fix the error-path restore in bytes_ext_put which wrote to cdata->data instead of cdata, causing the same overflow.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Linux Linux
From 67ec2a091630c28ea8d05db2bd7178a05b04b7e6 · fixed in af4b437a463ac0482ba705434a44da06783778e6; From 67ec2a091630c28ea8d05db2bd7178a05b04b7e6 · fixed in 1adde1941bba7b0d7104b86ed819d48d81cb0ad9; From 67ec2a091630c28ea8d05db2bd7178a05b04b7e6 · fixed in eaa67e139c9217099e2a7b717aeeb46c65de3494; From 67ec2a091630c28ea8d05db2bd7178a05b04b7e6 · fixed in 121577383b5cf221e86581e0f2bcca4c66f17469; From 67ec2a091630c28ea8d05db2bd7178a05b04b7e6 · fixed in f4933e1d11b97b6a0951648b7c3e53850e1b33a9; From 67ec2a091630c28ea8d05db2bd7178a05b04b7e6 · fixed in fd46668d538993218eea19c6925c868ac0f2630c
- Linux Linux
5.18
- KernelLinux
From 5.18.0 · fixed in 6.1.184; From 6.2.0 · fixed in 6.6.145; From 6.7.0 · fixed in 6.12.97; From 6.13.0 · fixed in 6.18.40; From 6.19.0 · fixed in 7.1.5