PT-2025-40182 · Linux+4 · Linux Kernel+7

Published 2025-10-01 · Updated 2026-01-20 · CVE-2023-53475

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A flaw exists in the Linux kernel's USB subsystem, specifically within the xhci-tegra driver. The issue arises when setting a dual-role port to Host mode, leading to a potential sleep call from an atomic context. This occurs because the tegra xusb padctl get usb3 companion function, called through tegra xusb find port, utilizes kasprintf, which can sleep, while being executed within an atomic context. The call to tegra xusb padctl get usb3 companion has been moved to the tegra xhci id work function to resolve this. The kasprintf function allocates memory for a string, and sleeping within an atomic context can lead to system instability or crashes.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

BDU:2026-05904

CVE-2023-53475

SUSE-SU-2025:03615-1

SUSE-SU-2025:03628-1

SUSE-SU-2025:3716-1

SUSE-SU-2025:3761-1

Affected Products

Astra Linux

Linux Kernel

Suse

Kasprintf

Tegra Xhci Id Work

Tegra Xusb Find Port

Tegra Xusb Padctl Get Usb3 Companion

Xhci-Tegra

References · 864

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53475.json · Exploit
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53475 · Vendor Advisory
• https://git.kernel.org/stable/c/130c61c516cd0684282a8f6ab163281d60642fc5 · Patch
• https://git.kernel.org/stable/c/1122474b757a5dd8b2b50008a97f33cdb10dff6e · Patch
• https://ubuntu.com/security/CVE-2023-53475 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-53475 · Security Note
• https://bdu.fstec.ru/vul/2026-05904 · Security Note
• https://git.kernel.org/stable/c/4c7f9d2e413dc06a157c4e5dccde84aaf4655eb3 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:3761-1 · Vendor Advisory
• https://git.kernel.org/stable/c/b4b4f17aa46c025da77aed5133b08971959c9684 · Patch
• https://cve.org/CVERecord?id=CVE-2023-53475 · Security Note
• https://git.kernel.org/stable/c/1fe6015aa92cc0dfd875c1d3c7c1750a1b0767d9 · Patch
• https://osv.dev/vulnerability/CVE-2023-53475 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:03628-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:3716-1 · Vendor Advisory