CVE-2026-53149thunderbolt: Bound root directory content to block size
- 7.1HighCVSS base score
- 0.13%Exploitation in 30 daysEPSS · top 98% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Bound root directory content to block size __tb_property_parse_dir() does not check that content_offset + content_len fits within block_len for the root directory case. When rootdir->length equals or exceeds block_len - 2, the entry loop reads past the allocated property block. Add a bounds check after computing content_offset and content_len to reject directories whose content extends past the block.
Timeline
ID reserved
By Linux
- 16 days later
· 16 days later
Published
- 4 months later
· 4 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.13% · top 98% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Affected products
- affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 – < 5c7657d38d07268124782f03519f07c22a5814fb
- affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 – < b212bc161d8a9937b42153723a4a3f2f74fab528
- affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 – < 1912be23daf4afc8d24ce916021ab68ca4c679db
- affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 – < 4d0b1524caadb04c10a71f3f88692c63dcb39115
- affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 – < 0a32040a48db8cf35de48b85d6115df5623e4964
- affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 – < 60ba6217460792356a238299edd675d91d46bab4
- affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 – < cbeb68cbaa0a6f979ef428a7f2d0268c082ba166
- affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 – < 65423079c7420e3dbf9a7aa345c243a3f5752e5d
- affected 4.15
- unaffected < 4.15
- unaffected 5.10.259 – ≤ 5.10.*
- unaffected 5.15.210 – ≤ 5.15.*
- unaffected 6.1.176 – ≤ 6.1.*
- unaffected 6.6.143 – ≤ 6.6.*
- unaffected 6.12.94 – ≤ 6.12.*
- unaffected 6.18.36 – ≤ 6.18.*
- unaffected 7.0.13 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References9
- https://git.kernel.org/stable/c/5c7657d38d07268124782f03519f07c22a5814fb (opens in a new tab)
- https://git.kernel.org/stable/c/b212bc161d8a9937b42153723a4a3f2f74fab528 (opens in a new tab)
- https://git.kernel.org/stable/c/1912be23daf4afc8d24ce916021ab68ca4c679db (opens in a new tab)
- https://git.kernel.org/stable/c/4d0b1524caadb04c10a71f3f88692c63dcb39115 (opens in a new tab)
- https://git.kernel.org/stable/c/0a32040a48db8cf35de48b85d6115df5623e4964 (opens in a new tab)
- https://git.kernel.org/stable/c/60ba6217460792356a238299edd675d91d46bab4 (opens in a new tab)
- https://git.kernel.org/stable/c/cbeb68cbaa0a6f979ef428a7f2d0268c082ba166 (opens in a new tab)
- https://git.kernel.org/stable/c/65423079c7420e3dbf9a7aa345c243a3f5752e5d (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-39240 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-53149)Record last updated .