PT-2025-49731 · Linux+1 · Linux Kernel+1

Published 2023-01-01 · Updated 2026-03-14 · CVE-2023-53840

Positive Technologies (AI Summary)

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

Description A flaw exists in the Linux kernel related to out-of-bound memory access within the xhci-dbc driver. Specifically, if the xdbc bulk write() function fails, the buffer used by the xdbc trace() function may not be properly NULL-terminated, potentially leading to memory access issues. The issue is addressed by reserving an extra byte in the buffer, which is automatically zeroed, preventing potential problems.

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

Exploit

Related Identifiers

CVE-2023-53840

OESA-2026-1341

SUSE-SU-2026:0263-1

SUSE-SU-2026:0316-1

SUSE-SU-2026:0317-1

SUSE-SU-2026:0411-1

SUSE-SU-2026:0617-1

Affected Products

Debian

Linux Kernel

References · 1166

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53840.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-40105 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53840 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-52927 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-38572 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-50616 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-23038 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-68819 · Security Note
• https://cve.org/CVERecord?id=CVE-2023-53840 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-39860 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-37766 · Security Note
• https://ubuntu.com/security/CVE-2023-53840 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-40271 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-40346 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-54145 · Security Note