# CVE-2024-50122: PCI: Hold rescan lock while adding devices during host probe

> A race condition in the Linux kernel PCI subsystem can cause a NULL pointer dereference and system crash during device removal.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 5 Nov 2024
- **Updated:** 11 May 2026
- **Also known as:** BELL-CVE-2024-50122, DEBIAN-CVE-2024-50122, GHSA-c64g-wm7p-fxqp, UBUNTU-CVE-2024-50122

## What is CVE-2024-50122?

CVE-2024-50122 is a medium-severity vulnerability in Linux kernel, published on 5 Nov 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

In the Linux kernel, the following vulnerability has been resolved:

PCI: Hold rescan lock while adding devices during host probe

Since adding the PCI power control code, we may end up with a race between
the pwrctl platform device rescanning the bus and host controller probe
functions. The latter need to take the rescan lock when adding devices or
we may end up in an undefined state having two incompletely added devices
and hit the following crash when trying to remove the device over sysfs:

  Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
  Internal error: Oops: 0000000096000004 [#1] SMP
  Call trace:
    __pi_strlen+0x14/0x150
    kernfs_find_ns+0x80/0x13c
    kernfs_remove_by_name_ns+0x54/0xf0
    sysfs_remove_bin_file+0x24/0x34
    pci_remove_resource_files+0x3c/0x84
    pci_remove_sysfs_dev_files+0x28/0x38
    pci_stop_bus_device+0x8c/0xd8
    pci_stop_bus_device+0x40/0xd8
    pci_stop_and_remove_bus_device_locked+0x28/0x48
    remove_store+0x70/0xb0
    dev_attr_store+0x20/0x38
    sysfs_kf_write+0x58/0x78
    kernfs_fop_write_iter+0xe8/0x184
    vfs_write+0x2dc/0x308
    ksys_write+0x7c/0xec

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2024-50122?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2024-50122?

Apply the vendor's patch.

## Is CVE-2024-50122 being exploited?

There is no known exploitation of CVE-2024-50122 in the wild and no public exploit code.

## Other vulnerabilities in Linux kernel

- [CVE-2026-53266](https://insights.sbomify.com/CVE-2026-53266/): Linux Kernel Out-of-Bounds Write (high 8.8, exploited in the wild)
- [CVE-2013-6282](https://insights.sbomify.com/CVE-2013-6282/): Linux Kernel Improper Input Validation (high 8.8, exploited in the wild)
- [CVE-2022-0185](https://insights.sbomify.com/CVE-2022-0185/): Linux Kernel Heap-Based Buffer Overflow (high 8.4, exploited in the wild)
- [CVE-2013-2094](https://insights.sbomify.com/CVE-2013-2094/): Linux Kernel Privilege Escalation (high 8.4, exploited in the wild)
- [CVE-2026-53362](https://insights.sbomify.com/CVE-2026-53362/): Linux Kernel Unspecified (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-50122 and fix it if it is affected.

What it is: CVE-2024-50122 is a medium-severity vulnerability in Linux kernel, published on 5 Nov 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-50122 in the wild and no public exploit code.

Affected product: Linux kernel. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2024-50122/ (Markdown: https://insights.sbomify.com/CVE-2024-50122/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-50122
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-50122
- OSV: https://osv.dev/vulnerability/CVE-2024-50122

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-50122/
Summaries are generated and may contain mistakes; the official description above is the record.