CVE-2023-53091

In the Linux kernel, the following vulnerability has been resolved: ext4: update s_journal_inum if it changes after journal replay When mounting a crafted ext4 image, s_journal_inum may change after journal replay, which is obviously unreasonable because we have successfully loaded and replayed the journal through the old s_journal_inum. And the new s_journal_inum bypasses some of the checks in ext4_get_journal(), which may trigger a null pointer dereference problem. So if s_journal_inum changes after the journal replay, we ignore the change, and rewrite the current journal_inum to the superblock.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/3039d8b8692408438a618fac2776b629852663c3	Patch
https://git.kernel.org/stable/c/499fef2030fb754c68b1c7cb3a799a3bc1d0d925	Patch
https://git.kernel.org/stable/c/70e66bdeae4d0f7c8e87762f425b68aedd5e8955	Patch
https://git.kernel.org/stable/c/ee0c5277d4fab920bd31345c49e193ecede9ecef	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2025-05-02 16:15

Updated : 2025-11-12 21:04

NVD link : CVE-2023-53091

Mitre link : CVE-2023-53091

CVE.ORG link : CVE-2023-53091

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

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