CVE-2025-13350
HighSummary
The vulnerability in Ubuntu Linux 6.8 (Noble Numbat) kernel stems from an incomplete backport of an AF_UNIX fix, causing the legacy garbage collector to mishandle MSG_OOB sockets. This leads to a use-after-free condition that can be exploited for reliable local privilege escalation (LPE).
Risk Assessment
An attacker with local access can exploit this flaw to escalate privileges, potentially leading to full system compromise. The risk is high because the vulnerability is reliable and affects default Ubuntu installations.
Recommendation
Immediately update the Ubuntu kernel to version 6.8.0-84.84 or later, which includes the fix. If immediate patching is not possible, consider restricting local access to the system.
Related vulnerabilities
- CVE-2026-92398Critical
A vulnerability was found in Ruijie RG-EW3000GX EW_3.0(1)B11P380 within the user_list_note module in the file /etc/rg_config/admin. Manipulation of the Name argument leads to OS command injection. The attack can be performed remotely, and the exploit has been publicly disclosed.
- CVE-2026-76420Critical
A vulnerability in the internal configuration of the Apache JServ Protocol (AJP) connector for Cisco Secure FMC Software could allow an unauthenticated, remote attacker to impersonate a peer device. The issue is due to incorrect initialization of encryption parameters for the AJP connector at boot time. A successful exploit could allow the attacker to execute commands as root and gain full control over the FMC REST APIs, but only if the sftunnel connection between FMC and FTD is down.
- CVE-2026-20331Critical
Cisco conducted an internal security review that resulted in a software hardening release addressing multiple internally discovered vulnerabilities in Cisco Secure Adaptive Security Appliance Software, Cisco Secure Firewall Threat Defense Software, and Cisco Secure Firewall Management Center Software. The vulnerabilities tracked by CVE-2026-20331 relate to failure of protection mechanisms (CWE-693).
- CVE-2026-20307Critical
A vulnerability in the web-based management interface of Cisco ISE could allow an authenticated, remote attacker to execute arbitrary commands on the underlying operating system. The attacker must have at least low-privileged administrative credentials. The issue is due to insecure deserialization of a user-supplied Java byte stream; successful exploitation could allow code execution and privilege escalation to root, and in single-node deployments could cause the ISE node to become unavailable (DoS).
- CVE-2026-20306Critical
A vulnerability in the REST API of Cisco ISE and ISE-PIC could allow an authenticated, remote attacker to perform command injection attacks on the underlying operating system and elevate privileges to root. The attacker must have valid administrative credentials. The issue is due to improper validation of user-supplied input; successful exploitation could allow arbitrary code execution, and in single-node deployments could cause the ISE node to become unavailable (DoS).
- CVE-2026-20305Critical
A vulnerability in the diagnostic tools of Cisco ISE and ISE-PIC could allow an authenticated, remote attacker to perform command injection attacks on the underlying operating system and elevate privileges to root. The attacker must have valid administrative credentials. The issue is due to improper validation of user-supplied input; successful exploitation could allow arbitrary code execution, and in single-node deployments could cause the ISE node to become unavailable (DoS).
- CVE-2026-20234Critical
Cisco conducted an internal security review that resulted in a software hardening release addressing multiple internally discovered vulnerabilities in Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC). The vulnerabilities tracked by CVE-2026-20234 relate to insufficiently protected credentials (CWE-522).
- CVE-2026-92397Critical
A vulnerability has been found in Ruijie RG-EW3000GX EW_3.0(1)B11P380 within the cc_set function of the file unifyframe-sgi.elf in the configChange component. Manipulation of the data.url argument leads to OS command injection. The attack may be performed remotely, and the exploit has been publicly disclosed.
- CVE-2026-70416Critical
Dell ObjectScale, versions prior to 4.4.0.0, contains a Deserialization of Untrusted Data vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to remote code execution.
- CVE-2025-59953Critical
LMDeploy implements an RPC server (AsyncRPCServer in zmq_rpc.py) whose call_and_response() function deserializes received messages using pickles.loads() without any sanitization. This allows remote code execution through the RPC server. The vulnerability exists from version 0.9.1 up to 0.10.2, where it is patched.
Original NVD description (English source)
Ubuntu Linux 6.8 GA retains the legacy AF_UNIX garbage collector but backports upstream commit 8594d9b85c07 ("af_unix: Don’t call skb_get() for OOB skb"). When orphaned MSG_OOB sockets hit unix_gc(), the garbage collector still calls kfree_skb() as if OOB SKBs held two references; on Ubuntu Linux 6.8 (Noble Numbat) kernel tree, they have only the queue reference, so the buffer is freed while still reachable and subsequent queue walks dereference freed memory, yielding a reliable local privilege escalation (LPE) caused by a use-after-free (UAF). Ubuntu builds that have already taken the new GC stack from commit 4090fa373f0e, and mainline Linux kernels shipping that infrastructure are unaffected because they no longer execute the legacy collector path. This issue affects Ubuntu Linux from 6.8.0-56.58 before 6.8.0-84.84.

