Buffer overflow in Linux kernel - CVE-2025-39822

Vulnerability identifier: #VU115628

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-2025-39822

CWE-ID: CWE-119

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 memory corruption within the io_kbuf_inc_commit() function in io_uring/kbuf.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Desktop 15
Basesystem Module
SUSE Linux Enterprise Live Patching
SUSE Real Time Module
Public Cloud Module
Legacy Module
Development Tools Module
kernel-livepatch-6_4_0-150700_7_25-rt-debuginfo
kernel-livepatch-6_4_0-150700_7_25-rt
kernel-livepatch-SLE15-SP7-RT_Update_7-debugsource
kernel-livepatch-SLE15-SP7_Update_7-debugsource
kernel-livepatch-6_4_0-150700_53_25-default
kernel-livepatch-6_4_0-150700_53_25-default-debuginfo
kernel-rt-devel-debuginfo
kernel-rt-devel
kernel-rt-debugsource
ocfs2-kmp-rt
ocfs2-kmp-rt-debuginfo
gfs2-kmp-rt-debuginfo
dlm-kmp-rt
kernel-syms-rt
dlm-kmp-rt-debuginfo
gfs2-kmp-rt
cluster-md-kmp-rt-debuginfo
kernel-rt-debuginfo
kernel-devel-rt
kernel-source-rt
kernel-rt
cluster-md-kmp-rt
kernel-azure-debugsource
kernel-devel-azure
kernel-source-azure
kernel-syms-azure
kernel-azure-debuginfo
kernel-azure-devel
kernel-azure-devel-debuginfo
kernel-azure
kernel-default-livepatch-devel
kernel-default-livepatch
kernel-default-extra
kernel-default-extra-debuginfo
kernel-64kb-devel-debuginfo
kernel-64kb-devel
kernel-64kb-debugsource
kernel-64kb-debuginfo
kernel-default
kernel-default-devel-debuginfo
kernel-default-debuginfo
kernel-default-devel
kernel-default-debugsource
kernel-devel
kernel-macros
kernel-zfcpdump
kernel-zfcpdump-debugsource
kernel-zfcpdump-debuginfo
dlm-kmp-default-debuginfo
kernel-64kb
ocfs2-kmp-default-debuginfo
cluster-md-kmp-default-debuginfo
dlm-kmp-default
cluster-md-kmp-default
ocfs2-kmp-default
gfs2-kmp-default
kernel-obs-build
gfs2-kmp-default-debuginfo
reiserfs-kmp-default-debuginfo
reiserfs-kmp-default
kernel-source
kernel-obs-build-debugsource
kernel-syms
kernel-default-base
kernel-docs

Install update from vendor's repository.

kernel-livepatch-6_4_0-150700_7_25-rt-debuginfo - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_7_25-rt - update to 1-150700.1.3.1
kernel-livepatch-SLE15-SP7-RT_Update_7-debugsource - update to 1-150700.1.3.1
kernel-livepatch-SLE15-SP7_Update_7-debugsource - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_25-default - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_25-default-debuginfo - update to 1-150700.15.3.1
kernel-rt-devel-debuginfo - update to 6.4.0-150700.7.25.1
kernel-rt-devel - update to 6.4.0-150700.7.25.1
kernel-rt-debugsource - update to 6.4.0-150700.7.25.1
ocfs2-kmp-rt - update to 6.4.0-150700.7.25.1
ocfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.25.1
gfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.25.1
dlm-kmp-rt - update to 6.4.0-150700.7.25.1
kernel-syms-rt - update to 6.4.0-150700.7.25.1
dlm-kmp-rt-debuginfo - update to 6.4.0-150700.7.25.1
gfs2-kmp-rt - update to 6.4.0-150700.7.25.1
cluster-md-kmp-rt-debuginfo - update to 6.4.0-150700.7.25.1
kernel-rt-debuginfo - update to 6.4.0-150700.7.25.1
kernel-devel-rt - update to 6.4.0-150700.7.25.1
kernel-source-rt - update to 6.4.0-150700.7.25.1
kernel-rt - update to 6.4.0-150700.7.25.1
cluster-md-kmp-rt - update to 6.4.0-150700.7.25.1
kernel-azure-debugsource - update to 6.4.0-150700.20.21.1
kernel-devel-azure - update to 6.4.0-150700.20.21.1
kernel-source-azure - update to 6.4.0-150700.20.21.1
kernel-syms-azure - update to 6.4.0-150700.20.21.1
kernel-azure-debuginfo - update to 6.4.0-150700.20.21.1
kernel-azure-devel - update to 6.4.0-150700.20.21.1
kernel-azure-devel-debuginfo - update to 6.4.0-150700.20.21.1
kernel-azure - update to 6.4.0-150700.20.21.1
kernel-default-livepatch-devel - update to 6.4.0-150700.53.25.1
kernel-default-livepatch - update to 6.4.0-150700.53.25.1
kernel-default-extra - update to 6.4.0-150700.53.25.1
kernel-default-extra-debuginfo - update to 6.4.0-150700.53.25.1
kernel-64kb-devel-debuginfo - update to 6.4.0-150700.53.25.1
kernel-64kb-devel - update to 6.4.0-150700.53.25.1
kernel-64kb-debugsource - update to 6.4.0-150700.53.25.1
kernel-64kb-debuginfo - update to 6.4.0-150700.53.25.1
kernel-default - update to 6.4.0-150700.53.25.1
kernel-default-devel-debuginfo - update to 6.4.0-150700.53.25.1
kernel-default-debuginfo - update to 6.4.0-150700.53.25.1
kernel-default-devel - update to 6.4.0-150700.53.25.1
kernel-default-debugsource - update to 6.4.0-150700.53.25.1
kernel-devel - update to 6.4.0-150700.53.25.1
kernel-macros - update to 6.4.0-150700.53.25.1
kernel-zfcpdump - update to 6.4.0-150700.53.25.1
kernel-zfcpdump-debugsource - update to 6.4.0-150700.53.25.1
kernel-zfcpdump-debuginfo - update to 6.4.0-150700.53.25.1
dlm-kmp-default-debuginfo - update to 6.4.0-150700.53.25.1
kernel-64kb - update to 6.4.0-150700.53.25.1
ocfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.25.1
cluster-md-kmp-default-debuginfo - update to 6.4.0-150700.53.25.1
dlm-kmp-default - update to 6.4.0-150700.53.25.1
cluster-md-kmp-default - update to 6.4.0-150700.53.25.1
ocfs2-kmp-default - update to 6.4.0-150700.53.25.1
gfs2-kmp-default - update to 6.4.0-150700.53.25.1
kernel-obs-build - update to 6.4.0-150700.53.25.1
gfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.25.1
reiserfs-kmp-default-debuginfo - update to 6.4.0-150700.53.25.1
reiserfs-kmp-default - update to 6.4.0-150700.53.25.1
kernel-source - update to 6.4.0-150700.53.25.1
kernel-obs-build-debugsource - update to 6.4.0-150700.53.25.1
kernel-syms - update to 6.4.0-150700.53.25.1
kernel-default-base - update to 6.4.0-150700.53.25.1.150700.17.17.1
kernel-docs - update to 6.4.0-150700.53.25.2

• https://git.kernel.org/stable/c/c64eff368ac676e8540344d27a3de47e0ad90d21
• https://git.kernel.org/stable/c/f4f411c068402c370c4f9a9d4950a97af97bbbb1

• Buffer overflow in Linux kernel io_uring
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel