CVE-2023-1476

Kpatch: mm/mremap.c: incomplete fix for cve-2022-41222

7.0 High

A use-after-free flaw was found in the Linux kernel’s mm/mremap memory address space accounting source code. This issue occurs due to a race condition between rmap walk and mremap, allowing a local user to crash the system or potentially escalate their privileges on the system.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: High
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.23%Up 0.2 points since Nov 3, 2023

What each source reports

CVE List Score used 7.0

Kpatch: mm/mremap.c: incomplete fix for cve-2022-41222

Record: CVE-2023-1476
CVSS 3.1: 7.0 HighCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-416
Updated: 2026-11-02

EUVDEUVD-2023-23724 7.0

Record: EUVD-2023-23724
CVSS 3.1: 7.0 HighCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-rccq-5462-rgcj 7.0

A use-after-free flaw was found in the Linux kernel’s mm/mremap memory address space accounting...

Record: GHSA-rccq-5462-rgcj
CVSS 3.1: 7.0 HighCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-416
Updated: 2026-11-02

NVD 7.0

Record: CVE-2023-1476
CVSS 3.1: 7.0 HighCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-416
Updated: 2026-11-02

OSV 7.0

Kpatch: mm/mremap.c: incomplete fix for cve-2022-41222

Record: CVE-2023-1476
CVSS 3.1: 7.0 HighCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-416
Updated: 2026-11-02

OSVRHSA-2023:1659 7.8

Red Hat Security Advisory: kpatch-patch security update

Record: RHSA-2023:1659
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`kpatch-patch-4_18_0-425_10_1` Red Hat:enterprise_linux:8::baseos From an advisory covering 4 CVEs	before 0:1-4.el8_7	0:1-4.el8_7
`kpatch-patch-4_18_0-425_10_1-debuginfo` Red Hat:enterprise_linux:8::baseos From an advisory covering 4 CVEs	before 0:1-4.el8_7	0:1-4.el8_7
`kpatch-patch-4_18_0-425_10_1-debugsource` Red Hat:enterprise_linux:8::baseos From an advisory covering 4 CVEs	before 0:1-4.el8_7	0:1-4.el8_7
`kpatch-patch-4_18_0-425_13_1` Red Hat:enterprise_linux:8::baseos From an advisory covering 4 CVEs	before 0:1-2.el8_7	0:1-2.el8_7
`kpatch-patch-4_18_0-425_13_1-debuginfo` Red Hat:enterprise_linux:8::baseos From an advisory covering 4 CVEs	before 0:1-2.el8_7	0:1-2.el8_7
`kpatch-patch-4_18_0-425_13_1-debugsource` Red Hat:enterprise_linux:8::baseos From an advisory covering 4 CVEs	before 0:1-2.el8_7	0:1-2.el8_7
`kpatch-patch-4_18_0-425_3_1` Red Hat:enterprise_linux:8::baseos From an advisory covering 4 CVEs	before 0:1-6.el8	0:1-6.el8
`kpatch-patch-4_18_0-425_3_1-debuginfo` Red Hat:enterprise_linux:8::baseos From an advisory covering 4 CVEs	before 0:1-6.el8	0:1-6.el8
`kpatch-patch-4_18_0-425_3_1-debugsource` Red Hat:enterprise_linux:8::baseos From an advisory covering 4 CVEs	before 0:1-6.el8	0:1-6.el8

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-1476 is a high vulnerability (CVSS 7.0) in Linux Kernel, published November 3, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.23%, the 14th percentile. No source names a fixed version.

References

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