CVE-2024-57934

Feb. 3, 2025, 2:52 p.m.

4.7
Medium

Description

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[]").

Product(s) Impacted

Vendor Product Versions
Linux
  • Linux Kernel
  • *, 6.13

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-476
NULL Pointer Dereference
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
o linux linux_kernel / / / / / / / /
o linux linux_kernel 6.13 rc1 / / / / / /
o linux linux_kernel 6.13 rc2 / / / / / /
o linux linux_kernel 6.13 rc3 / / / / / /
o linux linux_kernel 6.13 rc4 / / / / / /
o linux linux_kernel 6.13 rc5 / / / / / /

References

https://git.kernel.org/stable/c/b68b2a3fbacc7be720ef589d489bcacdd05c6d38
https://git.kernel.org/stable/c/d65474033740ded0a4fe9a097fce72328655b41d

Tags

416baaa9-dc9f-4396-8d5f-8c081fb06d67
CWE-476
2025-01-21
CVE-2024-57934

CVSS Score

4.7 / 10

CVSS Data - 3.1

  • Attack Vector: LOCAL
  • Attack Complexity: HIGH
  • Privileges Required: LOW
  • Scope: UNCHANGED
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: HIGH

    • CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

    View Vector String

Timeline

Published: Jan. 21, 2025, 12:15 p.m.
Last Modified: Feb. 3, 2025, 2:52 p.m.

Status : Analyzed

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

416baaa9-dc9f-4396-8d5f-8c081fb06d67

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.