Upstream information

CVE-2024-50229 at MITRE

Description

In the Linux kernel, the following vulnerability has been resolved:

nilfs2: fix potential deadlock with newly created symlinks

Syzbot reported that page_symlink(), called by nilfs_symlink(), triggers
memory reclamation involving the filesystem layer, which can result in
circular lock dependencies among the reader/writer semaphore
nilfs->ns_segctor_sem, s_writers percpu_rwsem (intwrite) and the
fs_reclaim pseudo lock.

This is because after commit 21fc61c73c39 ("don't put symlink bodies in
pagecache into highmem"), the gfp flags of the page cache for symbolic
links are overwritten to GFP_KERNEL via inode_nohighmem().

This is not a problem for symlinks read from the backing device, because
the __GFP_FS flag is dropped after inode_nohighmem() is called. However,
when a new symlink is created with nilfs_symlink(), the gfp flags remain
overwritten to GFP_KERNEL. Then, memory allocation called from
page_symlink() etc. triggers memory reclamation including the FS layer,
which may call nilfs_evict_inode() or nilfs_dirty_inode(). And these can
cause a deadlock if they are called while nilfs->ns_segctor_sem is held:

Fix this issue by dropping the __GFP_FS flag from the page cache GFP flags
of newly created symlinks in the same way that nilfs_new_inode() and
__nilfs_read_inode() do, as a workaround until we adopt nofs allocation
scope consistently or improve the locking constraints.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having moderate severity.

CVSS v3 Scores
  SUSE
Base Score 4.7
Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
CVSSv3 Version 3.1
CVSS v4 Scores
  SUSE
Base Score 5.7
Vector CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Attack Vector Local
Attack Complexity Low
Attack Requirements Present
Privileges Required Low
User Interaction None
Vulnerable System Confidentiality Impact None
Vulnerable System Integrity Impact None
Vulnerable System Availability Impact High
Subsequent System Confidentiality Impact None
Subsequent System Integrity Impact None
Subsequent System Availability Impact None
CVSSv4 Version 4.0
SUSE Bugzilla entry: 1233205 [NEW]

No SUSE Security Announcements cross referenced.


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise Desktop 15 SP5 kernel-default Unsupported
SUSE Linux Enterprise Desktop 15 SP5 kernel-source Unsupported
SUSE Linux Enterprise Desktop 15 SP6 kernel-default Not affected
SUSE Linux Enterprise Desktop 15 SP6 kernel-source Not affected
SUSE Linux Enterprise High Performance Computing 15 SP5 kernel-default Unsupported
SUSE Linux Enterprise High Performance Computing 15 SP5 kernel-source Unsupported
SUSE Linux Enterprise High Performance Computing 15 SP5 kernel-source-azure Unsupported
SUSE Linux Enterprise High Performance Computing 15 SP6 kernel-default Not affected
SUSE Linux Enterprise High Performance Computing 15 SP6 kernel-source Not affected
SUSE Linux Enterprise High Performance Computing 15 SP6 kernel-source-azure Not affected
SUSE Linux Enterprise Live Patching 15 SP5 kernel-default Unsupported
SUSE Linux Enterprise Live Patching 15 SP5 kernel-source Unsupported
SUSE Linux Enterprise Live Patching 15 SP6 kernel-default Not affected
SUSE Linux Enterprise Live Patching 15 SP6 kernel-source Not affected
SUSE Linux Enterprise Micro 5.1 kernel-default Unsupported
SUSE Linux Enterprise Micro 5.1 kernel-rt Unsupported
SUSE Linux Enterprise Micro 5.1 kernel-source Unsupported
SUSE Linux Enterprise Micro 5.1 kernel-source-rt Unsupported
SUSE Linux Enterprise Micro 5.2 kernel-default Unsupported
SUSE Linux Enterprise Micro 5.2 kernel-rt Unsupported
SUSE Linux Enterprise Micro 5.2 kernel-source Unsupported
SUSE Linux Enterprise Micro 5.2 kernel-source-rt Unsupported
SUSE Linux Enterprise Micro 5.3 kernel-default Unsupported
SUSE Linux Enterprise Micro 5.3 kernel-rt Unsupported
SUSE Linux Enterprise Micro 5.3 kernel-source Unsupported
SUSE Linux Enterprise Micro 5.3 kernel-source-rt Unsupported
SUSE Linux Enterprise Micro 5.4 kernel-default Unsupported
SUSE Linux Enterprise Micro 5.4 kernel-rt Unsupported
SUSE Linux Enterprise Micro 5.4 kernel-source Unsupported
SUSE Linux Enterprise Micro 5.4 kernel-source-rt Unsupported
SUSE Linux Enterprise Micro 5.5 kernel-default Unsupported
SUSE Linux Enterprise Micro 5.5 kernel-source Unsupported
SUSE Linux Enterprise Micro 5.5 kernel-source-rt Unsupported
SUSE Linux Enterprise Micro 6.0 kernel-default Not affected
SUSE Linux Enterprise Micro 6.0 kernel-source Not affected
SUSE Linux Enterprise Micro 6.0 kernel-source-rt Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP5 kernel-default Unsupported
SUSE Linux Enterprise Module for Basesystem 15 SP5 kernel-source Unsupported
SUSE Linux Enterprise Module for Basesystem 15 SP6 kernel-default Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP6 kernel-source Not affected
SUSE Linux Enterprise Module for Development Tools 15 SP5 kernel-default Unsupported
SUSE Linux Enterprise Module for Development Tools 15 SP5 kernel-source Unsupported
SUSE Linux Enterprise Module for Development Tools 15 SP6 kernel-default Not affected
SUSE Linux Enterprise Module for Development Tools 15 SP6 kernel-source Not affected
SUSE Linux Enterprise Module for Public Cloud 15 SP5 kernel-source-azure Unsupported
SUSE Linux Enterprise Module for Public Cloud 15 SP6 kernel-source-azure Not affected
SUSE Linux Enterprise Real Time 15 SP5 kernel-source-rt Unsupported
SUSE Linux Enterprise Real Time 15 SP6 kernel-source-rt Not affected
SUSE Linux Enterprise Server 15 SP5 kernel-default Unsupported
SUSE Linux Enterprise Server 15 SP5 kernel-source Unsupported
SUSE Linux Enterprise Server 15 SP5 kernel-source-azure Unsupported
SUSE Linux Enterprise Server 15 SP6 kernel-default Not affected
SUSE Linux Enterprise Server 15 SP6 kernel-source Not affected
SUSE Linux Enterprise Server 15 SP6 kernel-source-azure Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP5 kernel-default Unsupported
SUSE Linux Enterprise Server for SAP Applications 15 SP5 kernel-source Unsupported
SUSE Linux Enterprise Server for SAP Applications 15 SP5 kernel-source-azure Unsupported
SUSE Linux Enterprise Server for SAP Applications 15 SP6 kernel-default Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP6 kernel-source Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP6 kernel-source-azure Not affected
SUSE Manager Proxy 4.3 kernel-default Unsupported
SUSE Manager Proxy 4.3 kernel-source Unsupported
SUSE Manager Retail Branch Server 4.3 kernel-default Unsupported
SUSE Manager Retail Branch Server 4.3 kernel-source Unsupported
SUSE Manager Server 4.3 kernel-default Unsupported
SUSE Manager Server 4.3 kernel-source Unsupported
SUSE Real Time Module 15 SP5 kernel-source-rt Unsupported
SUSE Real Time Module 15 SP6 kernel-source-rt Not affected
openSUSE Leap 15.5 kernel-default Affected
openSUSE Leap 15.5 kernel-source Affected
openSUSE Leap 15.5 kernel-source-azure Unsupported
openSUSE Leap 15.5 kernel-source-rt Unsupported
openSUSE Leap 15.6 kernel-default Not affected
openSUSE Leap 15.6 kernel-source Not affected
openSUSE Leap 15.6 kernel-source-azure Not affected
openSUSE Leap 15.6 kernel-source-rt Not affected
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise Desktop 15 SP4 kernel-source Unsupported
SUSE Linux Enterprise High Availability Extension 12 SP5 kernel-default Not affected
SUSE Linux Enterprise High Availability Extension 12 SP5 kernel-source Not affected
SUSE Linux Enterprise High Performance Computing 12 SP5 kernel-default Not affected
SUSE Linux Enterprise High Performance Computing 12 SP5 kernel-source Not affected
SUSE Linux Enterprise High Performance Computing 12 SP5 kernel-source-azure Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2 kernel-source Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS kernel-source Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS kernel-default Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS kernel-source Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3 kernel-source Unsupported
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS kernel-source Unsupported
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS kernel-default Unsupported
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS kernel-source Unsupported
SUSE Linux Enterprise High Performance Computing 15 SP4 kernel-source Unsupported
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS kernel-default Unsupported
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS kernel-source Unsupported
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS kernel-default Unsupported
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS kernel-source Unsupported
SUSE Linux Enterprise Live Patching 12 SP5 kernel-default Not affected
SUSE Linux Enterprise Live Patching 12 SP5 kernel-source Not affected
SUSE Linux Enterprise Live Patching 15 SP2 kernel-default Not affected
SUSE Linux Enterprise Live Patching 15 SP2 kernel-source Not affected
SUSE Linux Enterprise Live Patching 15 SP3 kernel-default Unsupported
SUSE Linux Enterprise Live Patching 15 SP3 kernel-source Unsupported
SUSE Linux Enterprise Live Patching 15 SP4 kernel-default Unsupported
SUSE Linux Enterprise Live Patching 15 SP4 kernel-source Unsupported
SUSE Linux Enterprise Module for Basesystem 15 SP2 kernel-source Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP3 kernel-source Unsupported
SUSE Linux Enterprise Module for Basesystem 15 SP4 kernel-source Unsupported
SUSE Linux Enterprise Module for Development Tools 15 SP2 kernel-source Not affected
SUSE Linux Enterprise Module for Development Tools 15 SP3 kernel-source Unsupported
SUSE Linux Enterprise Module for Development Tools 15 SP4 kernel-source Unsupported
SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE kernel-default Unsupported
SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE kernel-source Unsupported
SUSE Linux Enterprise Server 12 SP5 kernel-default Not affected
SUSE Linux Enterprise Server 12 SP5 kernel-source Not affected
SUSE Linux Enterprise Server 12 SP5 kernel-source-azure Not affected
SUSE Linux Enterprise Server 12 SP5-LTSS kernel-default Not affected
SUSE Linux Enterprise Server 12 SP5-LTSS kernel-source Not affected
SUSE Linux Enterprise Server 12 SP5-LTSS kernel-source-azure Not affected
SUSE Linux Enterprise Server 15 SP2 kernel-source Not affected
SUSE Linux Enterprise Server 15 SP2-LTSS kernel-default Not affected
SUSE Linux Enterprise Server 15 SP2-LTSS kernel-source Not affected
SUSE Linux Enterprise Server 15 SP3 kernel-source Unsupported
SUSE Linux Enterprise Server 15 SP3-LTSS kernel-default Unsupported
SUSE Linux Enterprise Server 15 SP3-LTSS kernel-source Unsupported
SUSE Linux Enterprise Server 15 SP4 kernel-source Unsupported
SUSE Linux Enterprise Server 15 SP4-LTSS kernel-default Unsupported
SUSE Linux Enterprise Server 15 SP4-LTSS kernel-source Unsupported
SUSE Linux Enterprise Server for SAP Applications 12 SP5 kernel-default Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP5 kernel-source Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP5 kernel-source-azure Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 kernel-default Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 kernel-source Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 kernel-default Unsupported
SUSE Linux Enterprise Server for SAP Applications 15 SP3 kernel-source Unsupported
SUSE Linux Enterprise Server for SAP Applications 15 SP4 kernel-default Unsupported
SUSE Linux Enterprise Server for SAP Applications 15 SP4 kernel-source Unsupported
Products past their end of life and not receiving proactive updates anymore.
HPE Helion OpenStack 8 kernel-source Not affected
SUSE CaaS Platform 4.0 kernel-source Not affected
SUSE CaaS Platform Toolchain 3 kernel-source Not affected
SUSE Enterprise Storage 6 kernel-source Not affected
SUSE Enterprise Storage 7 kernel-source Not affected
SUSE Enterprise Storage 7.1 kernel-source Unsupported
SUSE Linux Enterprise Desktop 11 SP4 kernel-source Unsupported
SUSE Linux Enterprise Desktop 12 SP1 kernel-source Unsupported
SUSE Linux Enterprise Desktop 12 SP2 kernel-source Not affected
SUSE Linux Enterprise Desktop 12 SP3 kernel-source Not affected
SUSE Linux Enterprise Desktop 12 SP4 kernel-source Not affected
SUSE Linux Enterprise Desktop 15 kernel-source Not affected
SUSE Linux Enterprise Desktop 15 SP1 kernel-source Not affected
SUSE Linux Enterprise Desktop 15 SP2 kernel-source Not affected
SUSE Linux Enterprise Desktop 15 SP3 kernel-source Unsupported
SUSE Linux Enterprise High Performance Computing 15 kernel-source Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1 kernel-source Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS kernel-source Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS kernel-source Not affected
SUSE Linux Enterprise High Performance Computing 15-ESPOS kernel-source Not affected
SUSE Linux Enterprise High Performance Computing 15-LTSS kernel-source Not affected
SUSE Linux Enterprise Micro 5.0 kernel-default Not affected
SUSE Linux Enterprise Module for Basesystem 15 kernel-source Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP1 kernel-source Not affected
SUSE Linux Enterprise Module for Development Tools 15 kernel-source Not affected
SUSE Linux Enterprise Module for Development Tools 15 SP1 kernel-source Not affected
SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT kernel-source Not affected
SUSE Linux Enterprise Real Time 12 SP5 kernel-source-rt Not affected
SUSE Linux Enterprise Real Time 15 SP2 kernel-source Not affected
SUSE Linux Enterprise Real Time 15 SP3 kernel-source Unsupported
SUSE Linux Enterprise Real Time 15 SP3 kernel-source-rt Unsupported
SUSE Linux Enterprise Real Time 15 SP4 kernel-source Unsupported
SUSE Linux Enterprise Real Time 15 SP4 kernel-source-rt Unsupported
SUSE Linux Enterprise Server 11 SP4 kernel-source Unsupported
SUSE Linux Enterprise Server 11 SP4 LTSS kernel-default Unsupported
SUSE Linux Enterprise Server 11 SP4 LTSS kernel-source Unsupported
SUSE Linux Enterprise Server 11 SP4-LTSS kernel-source Unsupported
SUSE Linux Enterprise Server 12 SP1 kernel-source Unsupported
SUSE Linux Enterprise Server 12 SP1-LTSS kernel-source Unsupported
SUSE Linux Enterprise Server 12 SP2 kernel-source Not affected
SUSE Linux Enterprise Server 12 SP2-BCL kernel-source Not affected
SUSE Linux Enterprise Server 12 SP2-ESPOS kernel-source Not affected
SUSE Linux Enterprise Server 12 SP2-LTSS kernel-default Not affected
SUSE Linux Enterprise Server 12 SP2-LTSS kernel-source Not affected
SUSE Linux Enterprise Server 12 SP3 kernel-source Not affected
SUSE Linux Enterprise Server 12 SP3-BCL kernel-source Not affected
SUSE Linux Enterprise Server 12 SP3-ESPOS kernel-source Not affected
SUSE Linux Enterprise Server 12 SP3-LTSS kernel-source Not affected
SUSE Linux Enterprise Server 12 SP4 kernel-source Not affected
SUSE Linux Enterprise Server 12 SP4-ESPOS kernel-source Not affected
SUSE Linux Enterprise Server 12 SP4-LTSS kernel-default Not affected
SUSE Linux Enterprise Server 12 SP4-LTSS kernel-source Not affected
SUSE Linux Enterprise Server 15 kernel-source Not affected
SUSE Linux Enterprise Server 15 SP1 kernel-source Not affected
SUSE Linux Enterprise Server 15 SP1-BCL kernel-source Not affected
SUSE Linux Enterprise Server 15 SP1-LTSS kernel-default Not affected
SUSE Linux Enterprise Server 15 SP1-LTSS kernel-source Not affected
SUSE Linux Enterprise Server 15 SP2-BCL kernel-source Not affected
SUSE Linux Enterprise Server 15 SP3-BCL kernel-source Unsupported
SUSE Linux Enterprise Server 15-LTSS kernel-default Not affected
SUSE Linux Enterprise Server 15-LTSS kernel-source Not affected
SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 kernel-source Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP1 kernel-source Unsupported
SUSE Linux Enterprise Server for SAP Applications 12 SP2 kernel-source Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP3 kernel-source Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP4 kernel-source Not affected
SUSE Linux Enterprise Server for SAP Applications 15 kernel-source Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 kernel-source Not affected
SUSE Manager Proxy 4.0 kernel-source Not affected
SUSE Manager Proxy 4.1 kernel-source Not affected
SUSE Manager Proxy 4.2 kernel-source Unsupported
SUSE Manager Retail Branch Server 4.0 kernel-source Not affected
SUSE Manager Retail Branch Server 4.1 kernel-source Not affected
SUSE Manager Retail Branch Server 4.2 kernel-source Unsupported
SUSE Manager Server 4.0 kernel-source Not affected
SUSE Manager Server 4.1 kernel-source Not affected
SUSE Manager Server 4.2 kernel-source Unsupported
SUSE OpenStack Cloud 7 kernel-source Not affected
SUSE OpenStack Cloud 8 kernel-source Not affected
SUSE OpenStack Cloud 9 kernel-source Not affected
SUSE OpenStack Cloud Crowbar 8 kernel-source Not affected
SUSE OpenStack Cloud Crowbar 9 kernel-source Not affected
SUSE Real Time Module 15 SP3 kernel-source-rt Unsupported
SUSE Real Time Module 15 SP4 kernel-source-rt Unsupported
openSUSE Leap 15.3 kernel-source Unsupported
openSUSE Leap 15.3 kernel-source-rt Unsupported
openSUSE Leap 15.4 kernel-source Unsupported
openSUSE Leap 15.4 kernel-source-azure Unsupported
openSUSE Leap 15.4 kernel-source-rt Unsupported
Products at an unknown state of their lifecycle.
SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security kernel-source Not affected
SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security kernel-source-azure Not affected


SUSE Timeline for this CVE

CVE page created: Sat Nov 9 12:00:12 2024
CVE page last modified: Tue Nov 12 15:16:55 2024