Infinite loop in Linux kernel - CVE-2025-39816

Vulnerability identifier: #VU115549

CSH Severity: Low

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-39816

CWE-ID: CWE-835

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite loop within the io_kbuf_inc_commit(), io_ring_buffer_select() and io_ring_buffers_peek() functions in io_uring/kbuf.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Real Time Module
Basesystem Module
SUSE Linux Enterprise Live Patching
Public Cloud Module
Legacy Module
Development Tools Module
kernel-livepatch-6_4_0-150700_7_19-rt-debuginfo
kernel-livepatch-6_4_0-150700_7_19-rt
kernel-livepatch-SLE15-SP7-RT_Update_5-debugsource
kernel-livepatch-6_4_0-150700_53_19-default
kernel-livepatch-SLE15-SP7_Update_5-debugsource
kernel-livepatch-6_4_0-150700_53_19-default-debuginfo
kernel-syms-rt
kernel-rt-devel-debuginfo
kernel-rt-devel
cluster-md-kmp-rt-debuginfo
dlm-kmp-rt
cluster-md-kmp-rt
kernel-rt
kernel-source-rt
kernel-devel-rt
ocfs2-kmp-rt
ocfs2-kmp-rt-debuginfo
gfs2-kmp-rt-debuginfo
kernel-rt-debugsource
kernel-rt-debuginfo
gfs2-kmp-rt
dlm-kmp-rt-debuginfo
kernel-syms-azure
kernel-source-azure
kernel-devel-azure
kernel-azure-debuginfo
kernel-azure-devel
kernel-azure-devel-debuginfo
kernel-azure-debugsource
kernel-azure
kernel-default-extra
kernel-default-livepatch-devel
kernel-default-livepatch
kernel-docs
kernel-64kb-debugsource
kernel-64kb-devel-debuginfo
kernel-64kb-debuginfo
kernel-64kb-devel
kernel-default
kernel-default-devel-debuginfo
kernel-default-debugsource
kernel-default-debuginfo
kernel-default-devel
kernel-macros
kernel-devel
kernel-zfcpdump
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
kernel-64kb
kernel-obs-build
kernel-obs-build-debugsource
kernel-syms
kernel-source
reiserfs-kmp-default-debuginfo
reiserfs-kmp-default
cluster-md-kmp-default
ocfs2-kmp-default-debuginfo
gfs2-kmp-default-debuginfo
dlm-kmp-default
gfs2-kmp-default
dlm-kmp-default-debuginfo
ocfs2-kmp-default
cluster-md-kmp-default-debuginfo
kernel-default-extra-debuginfo
kernel-default-base

Install update from vendor's repository.

kernel-livepatch-6_4_0-150700_7_19-rt-debuginfo - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_7_19-rt - update to 1-150700.1.3.1
kernel-livepatch-SLE15-SP7-RT_Update_5-debugsource - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_53_19-default - update to 1-150700.15.3.1
kernel-livepatch-SLE15-SP7_Update_5-debugsource - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_19-default-debuginfo - update to 1-150700.15.3.1
kernel-syms-rt - update to 6.4.0-150700.7.19.1
kernel-rt-devel-debuginfo - update to 6.4.0-150700.7.19.1
kernel-rt-devel - update to 6.4.0-150700.7.19.1
cluster-md-kmp-rt-debuginfo - update to 6.4.0-150700.7.19.1
dlm-kmp-rt - update to 6.4.0-150700.7.19.1
cluster-md-kmp-rt - update to 6.4.0-150700.7.19.1
kernel-rt - update to 6.4.0-150700.7.19.1
kernel-source-rt - update to 6.4.0-150700.7.19.1
kernel-devel-rt - update to 6.4.0-150700.7.19.1
ocfs2-kmp-rt - update to 6.4.0-150700.7.19.1
ocfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.19.1
gfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.19.1
kernel-rt-debugsource - update to 6.4.0-150700.7.19.1
kernel-rt-debuginfo - update to 6.4.0-150700.7.19.1
gfs2-kmp-rt - update to 6.4.0-150700.7.19.1
dlm-kmp-rt-debuginfo - update to 6.4.0-150700.7.19.1
kernel-syms-azure - update to 6.4.0-150700.20.15.1
kernel-source-azure - update to 6.4.0-150700.20.15.2
kernel-devel-azure - update to 6.4.0-150700.20.15.2
kernel-azure-debuginfo - update to 6.4.0-150700.20.15.2
kernel-azure-devel - update to 6.4.0-150700.20.15.2
kernel-azure-devel-debuginfo - update to 6.4.0-150700.20.15.2
kernel-azure-debugsource - update to 6.4.0-150700.20.15.2
kernel-azure - update to 6.4.0-150700.20.15.2
kernel-default-extra - update to 6.4.0-150700.53.19.1
kernel-default-livepatch-devel - update to 6.4.0-150700.53.19.1
kernel-default-livepatch - update to 6.4.0-150700.53.19.1
kernel-docs - update to 6.4.0-150700.53.19.1
kernel-64kb-debugsource - update to 6.4.0-150700.53.19.1
kernel-64kb-devel-debuginfo - update to 6.4.0-150700.53.19.1
kernel-64kb-debuginfo - update to 6.4.0-150700.53.19.1
kernel-64kb-devel - update to 6.4.0-150700.53.19.1
kernel-default - update to 6.4.0-150700.53.19.1
kernel-default-devel-debuginfo - update to 6.4.0-150700.53.19.1
kernel-default-debugsource - update to 6.4.0-150700.53.19.1
kernel-default-debuginfo - update to 6.4.0-150700.53.19.1
kernel-default-devel - update to 6.4.0-150700.53.19.1
kernel-macros - update to 6.4.0-150700.53.19.1
kernel-devel - update to 6.4.0-150700.53.19.1
kernel-zfcpdump - update to 6.4.0-150700.53.19.1
kernel-zfcpdump-debuginfo - update to 6.4.0-150700.53.19.1
kernel-zfcpdump-debugsource - update to 6.4.0-150700.53.19.1
kernel-64kb - update to 6.4.0-150700.53.19.1
kernel-obs-build - update to 6.4.0-150700.53.19.1
kernel-obs-build-debugsource - update to 6.4.0-150700.53.19.1
kernel-syms - update to 6.4.0-150700.53.19.1
kernel-source - update to 6.4.0-150700.53.19.1
reiserfs-kmp-default-debuginfo - update to 6.4.0-150700.53.19.1
reiserfs-kmp-default - update to 6.4.0-150700.53.19.1
cluster-md-kmp-default - update to 6.4.0-150700.53.19.1
ocfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.19.1
gfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.19.1
dlm-kmp-default - update to 6.4.0-150700.53.19.1
gfs2-kmp-default - update to 6.4.0-150700.53.19.1
dlm-kmp-default-debuginfo - update to 6.4.0-150700.53.19.1
ocfs2-kmp-default - update to 6.4.0-150700.53.19.1
cluster-md-kmp-default-debuginfo - update to 6.4.0-150700.53.19.1
kernel-default-extra-debuginfo - update to 6.4.0-150700.53.19.1
kernel-default-base - update to 6.4.0-150700.53.19.1.150700.17.13.1

• https://git.kernel.org/stable/c/390a61d284e1ced088d43928dfcf6f86fffdd780
• https://git.kernel.org/stable/c/98b6fa62c84f2e129161e976a5b9b3cb4ccd117b

• Infinite loop in Linux kernel io_uring
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel