#VU113101 Use-after-free in Linux kernel - CVE-2025-38350

Vulnerability identifier: #VU113101

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-2025-38350

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 qdisc_alloc_handle() and qdisc_tree_reduce_backlog() functions in net/sched/sch_api.c. A local user can escalate privileges on the system.

Mitigation
Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

---

External links
https://git.kernel.org/stable/c/103406b38c600fec1fe375a77b27d87e314aea09
https://git.kernel.org/stable/c/3b290923ad2b23596208c1e29520badef4356a43
https://git.kernel.org/stable/c/7874c9c132e906a52a187d045995b115973c93fb
https://git.kernel.org/stable/c/a44acdd9e84a211989ff4b9b92bf3545d8456ad5
https://git.kernel.org/stable/c/a553afd91f55ff39b1e8a1c4989a29394c9e0472
https://git.kernel.org/stable/c/e269f29e9395527bc00c213c6b15da04ebb35070
https://git.kernel.org/stable/c/e9921b57dca05ac5f4fa1fa8e993d4f0ee52e2b7
https://git.kernel.org/stable/c/f680a4643c6f71e758d8fe0431a958e9a6a4f59d

---

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?