CVE-2024-56675
bpf: Fix UAF via mismatching bpf_prog/attachment RCU flavors
Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix UAF via mismatching bpf_prog/attachment RCU flavors Uprobes always use bpf_prog_run_array_uprobe() under tasks-trace-RCU protection. But it is possible to attach a non-sleepable BPF program to a uprobe, and non-sleepable BPF programs are freed via normal RCU (see __bpf_prog_put_noref()). This leads to UAF of the bpf_prog because a normal RCU grace period does not imply a tasks-trace-RCU grace period. Fix it by explicitly waiting for a tasks-trace-RCU grace period after removing the attachment of a bpf_prog to a perf_event.
INFO
Published Date :
Dec. 27, 2024, 3:15 p.m.
Last Modified :
Feb. 10, 2025, 6:15 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update the Linux kernel package.
- Reboot the system to apply the update.
Public PoC/Exploit Available at Github
CVE-2024-56675 has a 2 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-56675.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-56675 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-56675
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Java
None
JavaScript
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-56675 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-56675 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Feb. 10, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-416 -
Initial Analysis by [email protected]
Jan. 06, 2025
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE NIST CWE-416 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.0 up to (excluding) 6.1.121 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.67 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.6 *cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:* Changed Reference Type https://git.kernel.org/stable/c/9245459a992d22fe0e92e988f49db1fec82c184a No Types Assigned https://git.kernel.org/stable/c/9245459a992d22fe0e92e988f49db1fec82c184a Patch Changed Reference Type https://git.kernel.org/stable/c/9b53d2c2a38a1effc341d99be3f99fa7ef17047d No Types Assigned https://git.kernel.org/stable/c/9b53d2c2a38a1effc341d99be3f99fa7ef17047d Patch Changed Reference Type https://git.kernel.org/stable/c/ef1b808e3b7c98612feceedf985c2fbbeb28f956 No Types Assigned https://git.kernel.org/stable/c/ef1b808e3b7c98612feceedf985c2fbbeb28f956 Patch Changed Reference Type https://git.kernel.org/stable/c/f9f85df30118f3f4112761e6682fc60ebcce23e5 No Types Assigned https://git.kernel.org/stable/c/f9f85df30118f3f4112761e6682fc60ebcce23e5 Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Dec. 27, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: bpf: Fix UAF via mismatching bpf_prog/attachment RCU flavors Uprobes always use bpf_prog_run_array_uprobe() under tasks-trace-RCU protection. But it is possible to attach a non-sleepable BPF program to a uprobe, and non-sleepable BPF programs are freed via normal RCU (see __bpf_prog_put_noref()). This leads to UAF of the bpf_prog because a normal RCU grace period does not imply a tasks-trace-RCU grace period. Fix it by explicitly waiting for a tasks-trace-RCU grace period after removing the attachment of a bpf_prog to a perf_event. Added Reference https://git.kernel.org/stable/c/9245459a992d22fe0e92e988f49db1fec82c184a Added Reference https://git.kernel.org/stable/c/9b53d2c2a38a1effc341d99be3f99fa7ef17047d Added Reference https://git.kernel.org/stable/c/ef1b808e3b7c98612feceedf985c2fbbeb28f956 Added Reference https://git.kernel.org/stable/c/f9f85df30118f3f4112761e6682fc60ebcce23e5