CVE-2026-53146thunderbolt: Limit XDomain response copy to actual frame 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: Limit XDomain response copy to actual frame size tb_xdomain_copy() copies req->response_size bytes from the received packet buffer regardless of the actual frame size. When a short response arrives, this reads past the valid frame data in the DMA pool buffer into stale contents from previous transactions. Use the minimum of frame size and expected response size for the copy length.
- CVSS
- 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
- Weakness (CWE)
- Not given
- 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 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from cdae7c07e3e3509eaabc18c1640a55dc5b99c179 before c55da494dfb445fb28df3a9d293c2be6a299cd01; from cdae7c07e3e3509eaabc18c1640a55dc5b99c179 before 7720654b4842bcdfeb64bc002f6186041849e1e7; from cdae7c07e3e3509eaabc18c1640a55dc5b99c179 before 033dfa63bf6be2653441a1dccae4a8313a91bb9d; from cdae7c07e3e3509eaabc18c1640a55dc5b99c179 before fc261397295b8ad0654cec747b0ec25ea0011995; from cdae7c07e3e3509eaabc18c1640a55dc5b99c179 before a15b6d3136accb2bf84b04d9a3ddd991f7fbf1cb; from cdae7c07e3e3509eaabc18c1640a55dc5b99c179 before b5daa920f44cb582272fc9bfaeb67408776cbaef; from cdae7c07e3e3509eaabc18c1640a55dc5b99c179 before b2c1e5d9f1598cc1a4736d5c6bd1218f90805ee4; from cdae7c07e3e3509eaabc18c1640a55dc5b99c179 before 4db2bd2ed4785dbadaeeab9f4e346b21ac5fb8eb | CNA record |
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/c55da494dfb445fb28df3a9d293c2be6a299cd01patch
- https://git.kernel.org/stable/c/7720654b4842bcdfeb64bc002f6186041849e1e7patch
- https://git.kernel.org/stable/c/033dfa63bf6be2653441a1dccae4a8313a91bb9dpatch
- https://git.kernel.org/stable/c/fc261397295b8ad0654cec747b0ec25ea0011995patch
- https://git.kernel.org/stable/c/a15b6d3136accb2bf84b04d9a3ddd991f7fbf1cbpatch
- https://git.kernel.org/stable/c/b5daa920f44cb582272fc9bfaeb67408776cbaefpatch
- https://git.kernel.org/stable/c/b2c1e5d9f1598cc1a4736d5c6bd1218f90805ee4patch
- https://git.kernel.org/stable/c/4db2bd2ed4785dbadaeeab9f4e346b21ac5fb8ebpatch
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html
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.