CVE-2022-49329 - Vulnerability Details

- vduse: Fix NULL pointer dereference on sysfs access

Description

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

vduse: Fix NULL pointer dereference on sysfs access

The control device has no drvdata. So we will get a
NULL pointer dereference when accessing control
device's msg_timeout attribute via sysfs:

[ 132.841881][ T3644] BUG: kernel NULL pointer dereference, address: 00000000000000f8
[ 132.850619][ T3644] RIP: 0010:msg_timeout_show (drivers/vdpa/vdpa_user/vduse_dev.c:1271)
[ 132.869447][ T3644] dev_attr_show (drivers/base/core.c:2094)
[ 132.870215][ T3644] sysfs_kf_seq_show (fs/sysfs/file.c:59)
[ 132.871164][ T3644] ? device_remove_bin_file (drivers/base/core.c:2088)
[ 132.872082][ T3644] kernfs_seq_show (fs/kernfs/file.c:164)
[ 132.872838][ T3644] seq_read_iter (fs/seq_file.c:230)
[ 132.873578][ T3644] ? __vmalloc_area_node (mm/vmalloc.c:3041)
[ 132.874532][ T3644] kernfs_fop_read_iter (fs/kernfs/file.c:238)
[ 132.875513][ T3644] __kernel_read (fs/read_write.c:440 (discriminator 1))
[ 132.876319][ T3644] kernel_read (fs/read_write.c:459)
[ 132.877129][ T3644] kernel_read_file (fs/kernel_read_file.c:94)
[ 132.877978][ T3644] kernel_read_file_from_fd (include/linux/file.h:45 fs/kernel_read_file.c:186)
[ 132.879019][ T3644] __do_sys_finit_module (kernel/module.c:4207)
[ 132.879930][ T3644] __ia32_sys_finit_module (kernel/module.c:4189)
[ 132.880930][ T3644] do_int80_syscall_32 (arch/x86/entry/common.c:112 arch/x86/entry/common.c:132)
[ 132.881847][ T3644] entry_INT80_compat (arch/x86/entry/entry_64_compat.S:419)

To fix it, don't create the unneeded attribute for
control device anymore.

Published: 2025-02-26

Score: 5.5 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Linux

unaffected

Version	Status	Constraints
`c8a6153b6c59d95c0e091f053f6f180952ade91e`	affected	< 3a7a81f4835dfda11f39fdd27586da14331896eb
`c8a6153b6c59d95c0e091f053f6f180952ade91e`	affected	< 30fd1b56621e187346f65d01fe34870634b15188
`c8a6153b6c59d95c0e091f053f6f180952ade91e`	affected	< b22fdee17ec62604060fb0fda5e1414b634666e1
`c8a6153b6c59d95c0e091f053f6f180952ade91e`	affected	< b27ee76c74dc831d6e092eaebc2dfc9c0beed1c9

Linux

affected

Version	Status	Constraints
`5.15`	affected	—
`0`	unaffected	< 5.15
`5.15.47`	unaffected	≤ 5.15.*
`5.17.15`	unaffected	≤ 5.17.*
`5.18.4`	unaffected	≤ 5.18.*
`5.19`	unaffected	≤ *

Configuration 1 [-]

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:5.19:rc1::::::

Package	CPE	Advisory	Released Date
Red Hat Enterprise Linux 9
kernel-0:5.14.0-503.11.1.el9_5	cpe:/a:redhat:enterprise_linux:9	RHSA-2024:9315	2024-11-12T00:00:00Z
kernel-0:5.14.0-503.11.1.el9_5	cpe:/o:redhat:enterprise_linux:9	RHSA-2024:9315	2024-11-12T00:00:00Z

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2022-54899	In the Linux kernel, the following vulnerability has been resolved: vduse: Fix NULL pointer dereference on sysfs access The control device has no drvdata. So we will get a NULL pointer dereference when accessing control device's msg_timeout attribute via sysfs: [ 132.841881][ T3644] BUG: kernel NULL pointer dereference, address: 00000000000000f8 [ 132.850619][ T3644] RIP: 0010:msg_timeout_show (drivers/vdpa/vdpa_user/vduse_dev.c:1271) [ 132.869447][ T3644] dev_attr_show (drivers/base/core.c:2094) [ 132.870215][ T3644] sysfs_kf_seq_show (fs/sysfs/file.c:59) [ 132.871164][ T3644] ? device_remove_bin_file (drivers/base/core.c:2088) [ 132.872082][ T3644] kernfs_seq_show (fs/kernfs/file.c:164) [ 132.872838][ T3644] seq_read_iter (fs/seq_file.c:230) [ 132.873578][ T3644] ? __vmalloc_area_node (mm/vmalloc.c:3041) [ 132.874532][ T3644] kernfs_fop_read_iter (fs/kernfs/file.c:238) [ 132.875513][ T3644] __kernel_read (fs/read_write.c:440 (discriminator 1)) [ 132.876319][ T3644] kernel_read (fs/read_write.c:459) [ 132.877129][ T3644] kernel_read_file (fs/kernel_read_file.c:94) [ 132.877978][ T3644] kernel_read_file_from_fd (include/linux/file.h:45 fs/kernel_read_file.c:186) [ 132.879019][ T3644] __do_sys_finit_module (kernel/module.c:4207) [ 132.879930][ T3644] __ia32_sys_finit_module (kernel/module.c:4189) [ 132.880930][ T3644] do_int80_syscall_32 (arch/x86/entry/common.c:112 arch/x86/entry/common.c:132) [ 132.881847][ T3644] entry_INT80_compat (arch/x86/entry/entry_64_compat.S:419) To fix it, don't create the unneeded attribute for control device anymore.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00143.

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://git.kernel.org/stable/c/30fd1b56621e187346f65d01fe34870634b15188
https://git.kernel.org/stable/c/3a7a81f4835dfda11f39fdd27586da14331896eb
https://git.kernel.org/stable/c/b22fdee17ec62604060fb0fda5e1414b634666e1
https://git.kernel.org/stable/c/b27ee76c74dc831d6e092eaebc2dfc9c0beed1c9
https://lore.kernel.org/linux-cve-announce/2025022639-CVE-2022-49329-ed73@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2022-49329
https://www.cve.org/CVERecord?id=CVE-2022-49329

History

Mon, 11 May 2026 20:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Fri, 25 Apr 2025 03:45:00 +0000

Type	Values Removed	Values Added
First Time appeared		Redhat Redhat enterprise Linux
CPEs		cpe:/a:redhat:enterprise_linux:9 cpe:/o:redhat:enterprise_linux:9
Vendors & Products		Redhat Redhat enterprise Linux

Thu, 13 Mar 2025 22:15:00 +0000

Type	Values Removed	Values Added
First Time appeared		Linux Linux linux Kernel
Weaknesses		CWE-476
CPEs		cpe:2.3:o:linux:linux_kernel:::::::: cpe:2.3:o:linux:linux_kernel:5.19:rc1::::::
Vendors & Products		Linux Linux linux Kernel

Thu, 27 Feb 2025 01:45:00 +0000

Type	Values Removed	Values Added
References		https://lore.kernel.org/linux-cve-announce/2025022639-CVE-2022-49329-ed73@gregkh/T https://nvd.nist.gov/vuln/detail/CVE-2022-49329 https://www.cve.org/CVERecord?id=CVE-2022-49329
Metrics	threat_severity `None`	cvssV3_1 `{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}` threat_severity `Moderate`

Wed, 26 Feb 2025 02:45:00 +0000

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: vduse: Fix NULL pointer dereference on sysfs access The control device has no drvdata. So we will get a NULL pointer dereference when accessing control device's msg_timeout attribute via sysfs: [ 132.841881][ T3644] BUG: kernel NULL pointer dereference, address: 00000000000000f8 [ 132.850619][ T3644] RIP: 0010:msg_timeout_show (drivers/vdpa/vdpa_user/vduse_dev.c:1271) [ 132.869447][ T3644] dev_attr_show (drivers/base/core.c:2094) [ 132.870215][ T3644] sysfs_kf_seq_show (fs/sysfs/file.c:59) [ 132.871164][ T3644] ? device_remove_bin_file (drivers/base/core.c:2088) [ 132.872082][ T3644] kernfs_seq_show (fs/kernfs/file.c:164) [ 132.872838][ T3644] seq_read_iter (fs/seq_file.c:230) [ 132.873578][ T3644] ? __vmalloc_area_node (mm/vmalloc.c:3041) [ 132.874532][ T3644] kernfs_fop_read_iter (fs/kernfs/file.c:238) [ 132.875513][ T3644] __kernel_read (fs/read_write.c:440 (discriminator 1)) [ 132.876319][ T3644] kernel_read (fs/read_write.c:459) [ 132.877129][ T3644] kernel_read_file (fs/kernel_read_file.c:94) [ 132.877978][ T3644] kernel_read_file_from_fd (include/linux/file.h:45 fs/kernel_read_file.c:186) [ 132.879019][ T3644] __do_sys_finit_module (kernel/module.c:4207) [ 132.879930][ T3644] __ia32_sys_finit_module (kernel/module.c:4189) [ 132.880930][ T3644] do_int80_syscall_32 (arch/x86/entry/common.c:112 arch/x86/entry/common.c:132) [ 132.881847][ T3644] entry_INT80_compat (arch/x86/entry/entry_64_compat.S:419) To fix it, don't create the unneeded attribute for control device anymore.
Title		vduse: Fix NULL pointer dereference on sysfs access
References		https://git.kernel.org/stable/c/30fd1b56621e187346f65d01fe34870634b15188 https://git.kernel.org/stable/c/3a7a81f4835dfda11f39fdd27586da14331896eb https://git.kernel.org/stable/c/b22fdee17ec62604060fb0fda5e1414b634666e1 https://git.kernel.org/stable/c/b27ee76c74dc831d6e092eaebc2dfc9c0beed1c9

Subscriptions

Linux Linux Kernel

Redhat Enterprise Linux

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-02-26T02:10:50.073Z

Updated: 2026-05-11T18:57:35.437Z

Reserved: 2025-02-26T02:08:31.538Z

Link: CVE-2022-49329

Vulnrichment

Updated: 2025-10-01T16:15:41.872Z

NVD

Status : Modified

Published: 2025-02-26T07:01:09.703

Modified: 2025-10-01T20:16:09.610

Link: CVE-2022-49329

Redhat

Severity : Moderate

Publid Date: 2025-02-26T00:00:00Z

Links: CVE-2022-49329 - Bugzilla

OpenCVE Enrichment

No data.

Weaknesses

CWE-476

Tracking

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Exploitation none

Automatable no

Technical Impact partial

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