CVE-2026-53148thunderbolt: Clamp XDomain response data copy to allocation size
- 7.0HighCVSS base score
- 0.14%Exploitation in 30 daysEPSS · top 97% 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: Clamp XDomain response data copy to allocation size tb_xdp_properties_request() derives the per-packet copy length from the response header without checking that it fits in the previously allocated data buffer. A malicious peer can set its length field larger than the declared data_length, causing memcpy to write past the kcalloc allocation. Clamp the per-packet copy length so that the cumulative offset never exceeds data_len.
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 |
|---|---|---|---|
| redhat-SADPADP (enrichment) | 3.1 | High7.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.14% · top 97% of all CVEs (13 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 7.0.
Affected products
- affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 – < 0b334279a82d79fb4723bd4f614305de1ab69caa
- affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 – < 6021d39ccd979713b39b980286020d8f9a45efd1
- affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 – < 89ae04365e01d5ae4aae83044a8bbd2a9aaf8d0d
- affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 – < 5db10c8ad8c09f72c847dfeef3d876098257f505
- affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 – < 05a43157676c243c248d1c6d9dcecbe6eba2f35d
- affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 – < fcbd0cdab92838854a5818be7ed8a097164ef6d5
- affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 – < 906035d5c3784570191d259cbf9a0ac1617852b5
- affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 – < 322e93448d908434ae5545660fcbe8f5a7a8e141
- 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
References12
- https://git.kernel.org/stable/c/0b334279a82d79fb4723bd4f614305de1ab69caa (opens in a new tab)
- https://git.kernel.org/stable/c/6021d39ccd979713b39b980286020d8f9a45efd1 (opens in a new tab)
- https://git.kernel.org/stable/c/89ae04365e01d5ae4aae83044a8bbd2a9aaf8d0d (opens in a new tab)
- https://git.kernel.org/stable/c/5db10c8ad8c09f72c847dfeef3d876098257f505 (opens in a new tab)
- https://git.kernel.org/stable/c/05a43157676c243c248d1c6d9dcecbe6eba2f35d (opens in a new tab)
- https://git.kernel.org/stable/c/fcbd0cdab92838854a5818be7ed8a097164ef6d5 (opens in a new tab)
- https://git.kernel.org/stable/c/906035d5c3784570191d259cbf9a0ac1617852b5 (opens in a new tab)
- https://git.kernel.org/stable/c/322e93448d908434ae5545660fcbe8f5a7a8e141 (opens in a new tab)
- https://access.redhat.com/security/cve/CVE-2026-53148 (opens in a new tab)vdb-entryx_refsource_REDHAT
- RHBZ#2492756 (opens in a new tab)issue-trackingx_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53148.json (opens in a new tab)x_sadp-csaf-vex
- 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-2026-39239 (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-2026-53148)Record last updated .