PT-2025-33784 · Linux+5 · Linux Kernel+5
Published
2025-07-22
·
Updated
2026-03-24
·
CVE-2025-38586
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 (affected versions not specified)
Description:
The Linux kernel contains a flaw in the ARM64 BPF JIT related to frame pointer (FP) initialization for exception boundaries. Specifically, when a BPF program acts as an exception boundary, the
find used callee regs() function is not called, leading to ctx->fp used remaining false even if the frame pointer is used. This can result in the kernel crashing due to a pagefault when the frame pointer is not properly set up in the program's prologue. The issue is resolved by ensuring ctx->fp used is set to true for exception boundary programs, as the frame pointer is always saved in such programs.Recommendations:
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
NULL Pointer Dereference
Improper Initialization
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Related Identifiers
Affected Products
Astra Linux
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu