Out-of-bounds read in Linux kernel - CVE-2026-72300
Published: August 16, 2026
Vulnerability identifier: #VU143143
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-72300
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to an out-of-bounds read in sof_parse_token_sets in the SOF topology parser when parsing malformed topology private data. A local user can provide a specially crafted topology blob with a truncated trailing vendor array to cause a denial of service.
Affected software
Linux kernel
Ubuntu
linux-gcp-7.0 (Ubuntu package)
linux-azure-7.0 (Ubuntu package)
Ubuntu
linux-gcp-7.0 (Ubuntu package)
linux-azure-7.0 (Ubuntu package)
How to mitigate CVE-2026-72300
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
linux-gcp-7.0 (Ubuntu package) - addressed in versions 7.0.0-38.38~24.04.4, 7.0.0-1013.13~24.04.1, 7.0.0-1014.14~24.04.1
linux-azure-7.0 (Ubuntu package) - addressed in versions 7.0.0-1016.16~24.04.1, 7.0.0-1017.17~24.04.1
linux-gcp-7.0 (Ubuntu package) - addressed in versions 7.0.0-38.38~24.04.4, 7.0.0-1013.13~24.04.1, 7.0.0-1014.14~24.04.1
linux-azure-7.0 (Ubuntu package) - addressed in versions 7.0.0-1016.16~24.04.1, 7.0.0-1017.17~24.04.1
External References
- https://git.kernel.org/stable/c/201b60c4d15538fcc3c0c2ea9b75dd7d0f58022c
- https://git.kernel.org/stable/c/7c6d2d2baeb1e62dc8c6951d27edc16c5ea6e3aa
- https://git.kernel.org/stable/c/8468dd79cfb2ffbdeaf7c353f63d64941cb8ba05
- https://git.kernel.org/stable/c/a40e250414b463e953c54cd2a829c9a9a49a78c3
- https://git.kernel.org/stable/c/d34deef34c99bb4b3ebd2ac51058857827a20e7e