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CVE-2023-53840

UnknownEPSS 0.21%

Last modified

CVE-2023-53840 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
0.21%

10.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= aeb9dd1de98c1a5f2007ea5d2a154c1244caf8a0, < e8fb0f13e45cf361fd06593d3cb2d89915cd3bd0; >= aeb9dd1de98c1a5f2007ea5d2a154c1244caf8a0, < 351c8d8650d1ccc006255fa01f98b6c6496a02e5; >= aeb9dd1de98c1a5f2007ea5d2a154c1244caf8a0, < df7c8aba7309f4dc55df94e06b67f576c0f52406; >= aeb9dd1de98c1a5f2007ea5d2a154c1244caf8a0, < a4a97ab3db5c081eb6e7dba91306adefb461e0bd
LinuxLinux4.12

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2023-53840?
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.
How severe is CVE-2023-53840?
Severity scoring for CVE-2023-53840 is pending analysis. The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.
How do I fix CVE-2023-53840?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST