CVE-2026-53148
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.1% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.1% in the next 30 days (EPSS).
- Severity: 7.8 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.1% · EPSS, next 30 days
- Weakness
- CWE-787 · Out-of-bounds write
- Record status
- Modified
Affected
- Linux Kernel < 5.10.259
- Linux Kernel < 5.15.210
- Linux Kernel < 6.1.176
- Linux Kernel < 6.6.143
- Linux Kernel < 6.12.94
- Linux Kernel < 6.18.36
- Linux Kernel < 7.0.13
- Linux Kernel 7.1
Attack profile CVSS 3.1 · 7.8
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-53148.md and follow it. Check whether this project is affected by CVE-2026-53148. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/05a43157676c243c248d1c6d9dcecbe6eba2f35d
- https://git.kernel.org/stable/c/0b334279a82d79fb4723bd4f614305de1ab69caa
- https://git.kernel.org/stable/c/322e93448d908434ae5545660fcbe8f5a7a8e141
- https://git.kernel.org/stable/c/5db10c8ad8c09f72c847dfeef3d876098257f505
- https://git.kernel.org/stable/c/6021d39ccd979713b39b980286020d8f9a45efd1
- https://git.kernel.org/stable/c/89ae04365e01d5ae4aae83044a8bbd2a9aaf8d0d
- https://git.kernel.org/stable/c/906035d5c3784570191d259cbf9a0ac1617852b5
- https://git.kernel.org/stable/c/fcbd0cdab92838854a5818be7ed8a097164ef6d5
References
- https://git.kernel.org/stable/c/05a43157676c243c248d1c6d9dcecbe6eba2f35d
- https://git.kernel.org/stable/c/0b334279a82d79fb4723bd4f614305de1ab69caa
- https://git.kernel.org/stable/c/322e93448d908434ae5545660fcbe8f5a7a8e141
- https://git.kernel.org/stable/c/5db10c8ad8c09f72c847dfeef3d876098257f505
- https://git.kernel.org/stable/c/6021d39ccd979713b39b980286020d8f9a45efd1
- https://git.kernel.org/stable/c/89ae04365e01d5ae4aae83044a8bbd2a9aaf8d0d
- https://git.kernel.org/stable/c/906035d5c3784570191d259cbf9a0ac1617852b5
- https://git.kernel.org/stable/c/fcbd0cdab92838854a5818be7ed8a097164ef6d5
- https://access.redhat.com/security/cve/CVE-2026-53148
- https://bugzilla.redhat.com/show_bug.cgi?id=2492756
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53148.json