CVE-2022-50879
Unknown Unknown - Not Provided

Null Pointer Dereference in Linux Kernel objtool Causes Kernel Oops

Publication date: 2025-12-30

Last updated on: 2025-12-30

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: objtool: Fix SEGFAULT find_insn() will return NULL in case of failure. Check insn in order to avoid a kernel Oops for NULL pointer dereference.

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Meta Information

Published
2025-12-30
Last Modified
2025-12-30
Generated
2026-07-06
AI Q&A
2025-12-30
EPSS Evaluated
2026-07-05
NVD
CVE-2022-50879

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *

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Exploitability

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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability is a bug in the Linux kernel's objtool component where the function find_insn() can return NULL upon failure. If the code does not properly check for this NULL value, it can lead to a kernel Oops due to a NULL pointer dereference, causing a segmentation fault (SEGFAULT). The fix involves adding a check for the NULL pointer to prevent this crash.

Impact Analysis

This vulnerability can cause the Linux kernel to crash unexpectedly due to a NULL pointer dereference, leading to a kernel Oops and segmentation fault. This can result in system instability, potential downtime, and loss of service availability.

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