Unrated severityNVD Advisory· Published Dec 9, 2025· Updated Apr 15, 2026
CVE-2023-53840
CVE-2023-53840
Description
In the Linux kernel, the following vulnerability has been resolved:
usb: early: xhci-dbc: Fix a potential out-of-bound memory access
If xdbc_bulk_write() fails, the values in 'buf' can be anything. So the string is not guaranteed to be NULL terminated when xdbc_trace() is called.
Reserve an extra byte, which will be zeroed automatically because 'buf' is a static variable, in order to avoid troubles, should it happen.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
85- osv-coords83 versionspkg:linux/kernelpkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP4pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP4pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/kernel-livepatch-SLE15-SP4_Update_48&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP4pkg:rpm/suse/kernel-livepatch-SLE15-SP5_Update_34&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP5pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_76&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5
>= 4.12.0, < 5.15.99+ 82 more
- (no CPE)range: >= 4.12.0, < 5.15.99
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 5.14.21-150400.24.194.1.150400.24.98.3
- (no CPE)range: < 5.14.21-150400.24.194.1.150400.24.98.3
- (no CPE)range: < 5.14.21-150500.55.133.1.150500.6.65.1
- (no CPE)range: < 5.14.21-150500.55.133.1.150500.6.65.1
- (no CPE)range: < 5.14.21-150400.24.194.1.150400.24.98.3
- (no CPE)range: < 5.14.21-150400.24.194.1.150400.24.98.3
- (no CPE)range: < 5.14.21-150500.55.133.1.150500.6.65.1
- (no CPE)range: < 5.14.21-150400.24.194.1.150400.24.98.3
- (no CPE)range: < 5.14.21-150500.55.133.1.150500.6.65.1
- (no CPE)range: < 5.14.21-150400.24.194.1.150400.24.98.3
- (no CPE)range: < 5.14.21-150500.55.133.1.150500.6.65.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 4.12.14-122.290.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 4.12.14-122.290.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 4.12.14-122.290.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 1-150400.9.7.1
- (no CPE)range: < 1-150500.11.3.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 5.14.21-150400.15.142.1
- (no CPE)range: < 5.14.21-150400.15.142.1
- (no CPE)range: < 5.14.21-150500.13.118.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 4.12.14-122.290.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 4.12.14-122.290.1
- (no CPE)range: < 5.14.21-150400.15.142.1
- (no CPE)range: < 5.14.21-150400.15.142.1
- (no CPE)range: < 5.14.21-150500.13.118.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 4.12.14-122.290.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 4.12.14-122.290.1
- (no CPE)range: < 5.14.21-150400.24.194.1
- (no CPE)range: < 5.14.21-150500.55.133.1
- (no CPE)range: < 1-8.7.1
Patches
Vulnerability mechanics
References
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