VulnerabilityPublished 25 Jun 2026Updated 6 Nov 2026

CVE-2026-53150: Linux kernel · thunderbolt: Reject zero-length property entries in validator

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in cff8eb65d1eafe7793e54b4d0cf6bf831644630b : update Linux kernel when convenient.

Data as of 6 Nov 2026, 16:49 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in cff8eb65d1eafe7793e54b4d0cf6bf831644630b, ca11e7da4fba4b394f69e16448f4463c44c84de6, 581c2053ab4dbe27e83c9e62deb4c73aa8dc0c3a +5

Exploitation evidence

Disclosed: evidence found.
CVE published 25 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ cdae7c07e3e3509eaabc18c1640a55dc5b99c179, < cff8eb65d1eafe7793e54b4d0cf6bf831644630b	Fixed in cff8eb65d1eafe7793e54b4d0cf6bf831644630b
LinuxLinux	Affected ≥ cdae7c07e3e3509eaabc18c1640a55dc5b99c179, < ca11e7da4fba4b394f69e16448f4463c44c84de6	Fixed in ca11e7da4fba4b394f69e16448f4463c44c84de6
LinuxLinux	Affected ≥ cdae7c07e3e3509eaabc18c1640a55dc5b99c179, < 581c2053ab4dbe27e83c9e62deb4c73aa8dc0c3a	Fixed in 581c2053ab4dbe27e83c9e62deb4c73aa8dc0c3a
LinuxLinux	Affected ≥ cdae7c07e3e3509eaabc18c1640a55dc5b99c179, < 99d9dbad1463afb510d42c9714f846361d1b726d	Fixed in 99d9dbad1463afb510d42c9714f846361d1b726d
LinuxLinux	Affected ≥ cdae7c07e3e3509eaabc18c1640a55dc5b99c179, < 35d6c9252a152e756768a26dbf216b9dd9dd8e92	Fixed in 35d6c9252a152e756768a26dbf216b9dd9dd8e92
LinuxLinux	Affected ≥ cdae7c07e3e3509eaabc18c1640a55dc5b99c179, < 5f56bc6bddffe8710ba0ba8844023b5a44ca90e4	Fixed in 5f56bc6bddffe8710ba0ba8844023b5a44ca90e4

Description

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.

References

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