Resource management error in Linux kernel - CVE-2025-21837

Vulnerability identifier: #VU105471

CSH Severity: Low

CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-21837

CWE-ID: CWE-399

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to corrupt data.

The vulnerability exists due to improper management of internal resources within the io_uring_cmd_done(), io_uring_cmd_prep_setup() and io_uring_cmd() functions in io_uring/uring_cmd.c. A local user can corrupt data.

Linux kernel
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Workstation Extension 15
Basesystem Module
Development Tools Module
Legacy Module
SUSE Linux Enterprise Live Patching
Public Cloud Module
kernel-livepatch-6_4_0-150700_53_3-default
kernel-livepatch-6_4_0-150700_53_3-default-debuginfo
kernel-livepatch-SLE15-SP7_Update_1-debugsource
kernel-source-azure
kernel-devel-azure
kernel-syms-azure
kernel-azure-debuginfo
kernel-azure-debugsource
kernel-azure-devel-debuginfo
kernel-azure-devel
kernel-azure
kernel-default-devel-debuginfo
kernel-64kb-debuginfo
kernel-default-devel
kernel-devel
kernel-macros
kernel-zfcpdump
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
kernel-docs
kernel-obs-build-debugsource
kernel-syms
kernel-obs-build
kernel-source
gfs2-kmp-default-debuginfo
reiserfs-kmp-default
reiserfs-kmp-default-debuginfo
kernel-default-debugsource
kernel-default-debuginfo
gfs2-kmp-default
dlm-kmp-default-debuginfo
cluster-md-kmp-default
ocfs2-kmp-default
cluster-md-kmp-default-debuginfo
dlm-kmp-default
kernel-64kb-devel-debuginfo
ocfs2-kmp-default-debuginfo
kernel-default-extra
kernel-default-extra-debuginfo
kernel-default-livepatch
kernel-default-livepatch-devel
kernel-64kb
kernel-64kb-devel
kernel-64kb-debugsource
kernel-default
kernel-default-base

Install update from vendor's website.

Linux kernel - addressed in versions 6.13.4, 6.14
kernel-livepatch-6_4_0-150700_53_3-default - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_3-default-debuginfo - update to 1-150700.15.3.1
kernel-livepatch-SLE15-SP7_Update_1-debugsource - update to 1-150700.15.3.1
kernel-source-azure - update to 6.4.0-150700.20.3.1
kernel-devel-azure - update to 6.4.0-150700.20.3.1
kernel-syms-azure - update to 6.4.0-150700.20.3.1
kernel-azure-debuginfo - update to 6.4.0-150700.20.3.1
kernel-azure-debugsource - update to 6.4.0-150700.20.3.1
kernel-azure-devel-debuginfo - update to 6.4.0-150700.20.3.1
kernel-azure-devel - update to 6.4.0-150700.20.3.1
kernel-azure - update to 6.4.0-150700.20.3.1
kernel-default-devel-debuginfo - update to 6.4.0-150700.53.3.1
kernel-64kb-debuginfo - update to 6.4.0-150700.53.3.1
kernel-default-devel - update to 6.4.0-150700.53.3.1
kernel-devel - update to 6.4.0-150700.53.3.1
kernel-macros - update to 6.4.0-150700.53.3.1
kernel-zfcpdump - update to 6.4.0-150700.53.3.1
kernel-zfcpdump-debuginfo - update to 6.4.0-150700.53.3.1
kernel-zfcpdump-debugsource - update to 6.4.0-150700.53.3.1
kernel-docs - update to 6.4.0-150700.53.3.1
kernel-obs-build-debugsource - update to 6.4.0-150700.53.3.1
kernel-syms - update to 6.4.0-150700.53.3.1
kernel-obs-build - update to 6.4.0-150700.53.3.1
kernel-source - update to 6.4.0-150700.53.3.1
gfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.3.1
reiserfs-kmp-default - update to 6.4.0-150700.53.3.1
reiserfs-kmp-default-debuginfo - update to 6.4.0-150700.53.3.1
kernel-default-debugsource - update to 6.4.0-150700.53.3.1
kernel-default-debuginfo - update to 6.4.0-150700.53.3.1
gfs2-kmp-default - update to 6.4.0-150700.53.3.1
dlm-kmp-default-debuginfo - update to 6.4.0-150700.53.3.1
cluster-md-kmp-default - update to 6.4.0-150700.53.3.1
ocfs2-kmp-default - update to 6.4.0-150700.53.3.1
cluster-md-kmp-default-debuginfo - update to 6.4.0-150700.53.3.1
dlm-kmp-default - update to 6.4.0-150700.53.3.1
kernel-64kb-devel-debuginfo - update to 6.4.0-150700.53.3.1
ocfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.3.1
kernel-default-extra - update to 6.4.0-150700.53.3.1
kernel-default-extra-debuginfo - update to 6.4.0-150700.53.3.1
kernel-default-livepatch - update to 6.4.0-150700.53.3.1
kernel-default-livepatch-devel - update to 6.4.0-150700.53.3.1
kernel-64kb - update to 6.4.0-150700.53.3.1
kernel-64kb-devel - update to 6.4.0-150700.53.3.1
kernel-64kb-debugsource - update to 6.4.0-150700.53.3.1
kernel-default - update to 6.4.0-150700.53.3.1
kernel-default-base - update to 6.4.0-150700.53.3.1.150700.17.2.1

• https://git.kernel.org/stable/c/87fe1d68842a308998b315c8ed0163a1d639017c
• https://git.kernel.org/stable/c/d6211ebbdaa541af197b50b8dd8f22642ce0b87f
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13.4
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14

• Resource management error in Linux kernel io_uring
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel