CVE-2026-53150

Summary

In the Linux kernel, the following vulnerability has been resolved:

thunderbolt: Reject zero-length property entries in validator

tb_property_entry_valid() accepts entries with length == 0 for DIRECTORY, DATA, and TEXT types. A zero-length TEXT entry passes validation but causes an underflow in the null-termination logic:

property->value.text[property->length * 4 - 1] = '\0';

When property->length is 0 this writes to offset -1 relative to the allocation.

Reject zero-length entries early in the validator since they have no valid representation in the XDomain property protocol.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxcdae7c07e3e3509eaabc18c1640a55dc5b99c179 < 581c2053ab4dbe27e83c9e62deb4c73aa8dc0c3aaffected
LinuxLinuxcdae7c07e3e3509eaabc18c1640a55dc5b99c179 < 35d6c9252a152e756768a26dbf216b9dd9dd8e92affected
LinuxLinuxcdae7c07e3e3509eaabc18c1640a55dc5b99c179 < 99d9dbad1463afb510d42c9714f846361d1b726daffected
LinuxLinuxcdae7c07e3e3509eaabc18c1640a55dc5b99c179 < 5f56bc6bddffe8710ba0ba8844023b5a44ca90e4affected
LinuxLinuxcdae7c07e3e3509eaabc18c1640a55dc5b99c179 < ca11e7da4fba4b394f69e16448f4463c44c84de6affected
LinuxLinuxcdae7c07e3e3509eaabc18c1640a55dc5b99c179 < 2e0ddac549ebd713eb9f4a15b6496e3440a17d8baffected
LinuxLinuxcdae7c07e3e3509eaabc18c1640a55dc5b99c179 < 3b6e68cb97f725385010264a873e14a3921b6b8aaffected
LinuxLinuxcdae7c07e3e3509eaabc18c1640a55dc5b99c179 < cff8eb65d1eafe7793e54b4d0cf6bf831644630baffected
LinuxLinux4.15affected
LinuxLinux0 < 4.15unaffected
LinuxLinux5.10.259 <= 5.10.*unaffected
LinuxLinux5.15.210 <= 5.15.*unaffected
LinuxLinux6.1.176 <= 6.1.*unaffected
LinuxLinux6.6.143 <= 6.6.*unaffected
LinuxLinux6.12.94 <= 6.12.*unaffected
LinuxLinux6.18.36 <= 6.18.*unaffected
LinuxLinux7.0.13 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References