SB20260626193 - Out-of-bounds read in Linux kernel thunderbolt driver
Published: June 26, 2026
Security Bulletin ID
SB20260626193
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2026-53149)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to an out-of-bounds read in __tb_property_parse_dir() in the thunderbolt property parser when parsing a crafted root directory property block. A local user can supply a crafted property block to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0a32040a48db8cf35de48b85d6115df5623e4964
- https://git.kernel.org/stable/c/1912be23daf4afc8d24ce916021ab68ca4c679db
- https://git.kernel.org/stable/c/4d0b1524caadb04c10a71f3f88692c63dcb39115
- https://git.kernel.org/stable/c/5c7657d38d07268124782f03519f07c22a5814fb
- https://git.kernel.org/stable/c/60ba6217460792356a238299edd675d91d46bab4
- https://git.kernel.org/stable/c/65423079c7420e3dbf9a7aa345c243a3f5752e5d
- https://git.kernel.org/stable/c/b212bc161d8a9937b42153723a4a3f2f74fab528
- https://git.kernel.org/stable/c/cbeb68cbaa0a6f979ef428a7f2d0268c082ba166