PT-2025-18857 · Linux+3 · Linux Kernel+3
CVE-2023-53093
·
Published
2025-05-02
·
Updated
2026-08-23
CVSS v3.1
5.5
Medium
| 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 versions prior to the fixed version
Description
A bug in the Linux kernel's histogram code allowed histogram values to have certain modifiers, which caused a bug. The issue occurred when attempting to set a histogram value to a string, stacktrace, graph, symbol, syscall, or grouped in buckets or log, resulting in a kernel NULL pointer dereference. The estimated number of potentially affected devices is not provided. There is no information about real-world incidents where this issue was exploited.
Technical details about exploitation include:
- API Endpoints:
/sys/kernel/tracing/kprobe eventsand/sys/kernel/tracing/events/kprobes/copy to user/trigger - Vulnerable Parameters or Variables:
n,hitcount.buckets,sort - Function Names:
hist field name.part.0,hist field print,event hist trigger print,hist show
Recommendations
For Linux kernel versions prior to the fixed version: update to a version that includes the fix for this issue.
As a temporary workaround, consider restricting access to the
/sys/kernel/tracing/ directory to minimize the risk of exploitation.
Avoid using the n and hitcount.buckets parameters in the affected API endpoints until the issue is resolved.Exploit
Fix
DoS
NULL Pointer Dereference
Found an issue in the description? Have something to add? Feel free to write us 👾
Weakness Enumeration
Related Identifiers
Affected Products
Debian
Linux Kernel
Red Os
Suse