CVE-2026-53150
kernel: thunderbolt: Reject zero-length property entries in validator
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · June 25, 2026
Updated · July 7, 2026
Description
A flaw was found in the Linux kernel's Thunderbolt subsystem. The tb_property_entry_valid() function, which validates Thunderbolt property entries, accepts zero-length TEXT entries. This can cause an underflow in the null-termination logic, resulting in an out-of-bounds write to memory. This memory corruption could lead to a denial of service (system crash) or potentially allow for privilege escalation.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-191 · Integer Underflow (Wrap or Wraparound)