#VU102041 Use-after-free in Linux kernel - CVE-2024-56556

Vulnerability identifier: #VU102041

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-56556

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the binder_txns_pending_ilocked() and binder_add_freeze_work() functions in drivers/android/binder.c. A local user can escalate privileges on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.12, 6.12.1, 6.12.2, 6.12.3

---

External links
https://git.kernel.org/stable/c/38fbefeb2c140b581ed7de8117a5c90d6dd89c22
https://git.kernel.org/stable/c/dc8aea47b928cc153b591b3558829ce42f685074
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.4
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13

---

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.