CVE-2024-47675 Information

Description

In the Linux kernel the following vulnerability has been resolved:

bpf: Fix use-after-free in bpf_uprobe_multi_link_attach()

If bpf_link_prime() fails bpf_uprobe_multi_link_attach() goes to the error_free label and frees the array of bpf_uprobe’s without calling bpf_uprobe_unregister().

This leaks bpf_uprobe->uprobe and worse this frees bpf_uprobe->consumer without removing it from the uprobe->consumers list.

CVSS Vector

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

Reference

https://git.kernel.org/stable/c/790c630ab0e7d7aba6d186581d4627c09fce60f3 https://git.kernel.org/stable/c/7c1d782e5afbf7c50ba74ecc4ddc18a05d63e5ee https://git.kernel.org/stable/c/cdf27834c3dd5d9abf7eb8e4ee87ee9e307eb25c https://git.kernel.org/stable/c/5fe6e308abaea082c20fbf2aa5df8e14495622cf

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8