CVE-2026-53148thunderbolt: Clamp XDomain response data copy to allocation size
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.0 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-787
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from cdae7c07e3e3509eaabc18c1640a55dc5b99c179 before 0b334279a82d79fb4723bd4f614305de1ab69caa; from cdae7c07e3e3509eaabc18c1640a55dc5b99c179 before 6021d39ccd979713b39b980286020d8f9a45efd1; from cdae7c07e3e3509eaabc18c1640a55dc5b99c179 before 89ae04365e01d5ae4aae83044a8bbd2a9aaf8d0d; from cdae7c07e3e3509eaabc18c1640a55dc5b99c179 before 5db10c8ad8c09f72c847dfeef3d876098257f505; from cdae7c07e3e3509eaabc18c1640a55dc5b99c179 before 05a43157676c243c248d1c6d9dcecbe6eba2f35d; from cdae7c07e3e3509eaabc18c1640a55dc5b99c179 before fcbd0cdab92838854a5818be7ed8a097164ef6d5; from cdae7c07e3e3509eaabc18c1640a55dc5b99c179 before 906035d5c3784570191d259cbf9a0ac1617852b5; from cdae7c07e3e3509eaabc18c1640a55dc5b99c179 before 322e93448d908434ae5545660fcbe8f5a7a8e141 | CNA record |
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | 10 | CISA ADP |
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name) | all versions | CISA ADP |
linux linux_kernel linux:linux_kernel | from 4.15 before 5.10.259; from 5.11 before 5.15.210; from 5.16 before 6.1.176; from 6.2 before 6.6.143; from 6.7 before 6.12.94; from 6.13 before 6.18.36; from 6.19 before 7.0.13; 7.1; and 6 more ranges | NVD |
References
- https://git.kernel.org/stable/c/0b334279a82d79fb4723bd4f614305de1ab69caapatch
- https://git.kernel.org/stable/c/6021d39ccd979713b39b980286020d8f9a45efd1patch
- https://git.kernel.org/stable/c/89ae04365e01d5ae4aae83044a8bbd2a9aaf8d0dpatch
- https://git.kernel.org/stable/c/5db10c8ad8c09f72c847dfeef3d876098257f505patch
- https://git.kernel.org/stable/c/05a43157676c243c248d1c6d9dcecbe6eba2f35dpatch
- https://git.kernel.org/stable/c/fcbd0cdab92838854a5818be7ed8a097164ef6d5patch
- https://git.kernel.org/stable/c/906035d5c3784570191d259cbf9a0ac1617852b5patch
- https://git.kernel.org/stable/c/322e93448d908434ae5545660fcbe8f5a7a8e141patch
- https://access.redhat.com/security/cve/CVE-2026-53148third-party-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2492756third-party-advisory
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53148.jsonthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.