CVE-2024-57934
- Source
- https://cve.org/CVERecord?id=CVE-2024-57934
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-57934.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2024-57934
- Downstream
- Related
- Published
- 2025-01-21T12:01:30Z
- Modified
- 2026-08-12T03:51:16Z
- Severity
-
- 4.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- fgraph: Add READ_ONCE() when accessing fgraph_array[]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
fgraph: Add READ_ONCE() when accessing fgraph_array[]
In __ftrace_return_to_handler(), a loop iterates over the fgraph_array[] elements, which are fgraph_ops. The loop checks if an element is a fgraph_stub to prevent using a fgraph_stub afterward.
However, if the compiler reloads fgraph_array[] after this check, it might race with an update to fgraph_array[] that introduces a fgraph_stub. This could result in the stub being processed, but the stub contains a null "func_hash" field, leading to a NULL pointer dereference.
To ensure that the gops compared against the fgraph_stub matches the gops processed later, add a READ_ONCE(). A similar patch appears in commit 63a8dfb ("function_graph: Add READ_ONCE() when accessing fgraph_array[]").
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/57xxx/CVE-2024-57934.json" }- References
-
- https://git.kernel.org/stable/c/b68b2a3fbacc7be720ef589d489bcacdd05c6d38
- https://git.kernel.org/stable/c/d65474033740ded0a4fe9a097fce72328655b41d
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/57xxx/CVE-2024-57934.json
- https://nvd.nist.gov/vuln/detail/CVE-2024-57934
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git