Use-after-free in Linux kernel - CVE-2025-37779

Vulnerability identifier: #VU108234

CSH Severity: Low

CVSS v4: 8.5 [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]

CVE-ID: CVE-2025-37779

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

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

The vulnerability exists due to a use-after-free error within the __iov_iter_get_pages_alloc() function in lib/iov_iter.c. A local user can escalate privileges on the system.

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-azure (Ubuntu package)
linux-aws (Ubuntu package)

Install update from vendor's website.

Linux kernel - update to 6.14.4
linux (Ubuntu package) - addressed in versions 6.14.0-22.22, 6.14.0-1004.4, 6.14.0-1007.7, 6.14.0-1008.8
linux-azure (Ubuntu package) - update to 6.14.0-1007.7
linux-aws (Ubuntu package) - addressed in versions 6.14.0-1007.7, 6.14.0-1007.7+1

• https://git.kernel.org/stable/c/770c8d55c42868239c748a3ebc57c9e37755f842
• https://git.kernel.org/stable/c/d833f21162c4d536d729628f8cf1ee8d4110f2b7
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14.4

• Use-after-free in Linux kernel lib
• Ubuntu update for linux
• Ubuntu update for linux-azure
• Ubuntu update for linux-aws