CVE-2024-43828

In the Linux kernel, the following vulnerability has been resolved: ext4: fix infinite loop when replaying fast_commit When doing fast_commit replay an infinite loop may occur due to an uninitialized extent_status struct. ext4_ext_determine_insert_hole() does not detect the replay and calls ext4_es_find_extent_range(), which will return immediately without initializing the 'es' variable. Because 'es' contains garbage, an integer overflow may happen causing an infinite loop in this function, easily reproducible using fstest generic/039. This commit fixes this issue by unconditionally initializing the structure in function ext4_es_find_extent_range(). Thanks to Zhang Yi, for figuring out the real problem!

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/0619f7750f2b178a1309808832ab20d85e0ad121	Patch
https://git.kernel.org/stable/c/181e63cd595c688194e07332f9944b3a63193de2	Patch
https://git.kernel.org/stable/c/5ed0496e383cb6de120e56991385dce70bbb87c1	Patch
https://git.kernel.org/stable/c/81f819c537d29932e4b9267f02411cbc8b355178	Patch
https://git.kernel.org/stable/c/907c3fe532253a6ef4eb9c4d67efb71fab58c706	Patch
https://git.kernel.org/stable/c/c6e67df64783e99a657ef2b8c834ba2bf54c539c	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::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2024-08-17 10:15

Updated : 2024-08-22 15:41

NVD link : CVE-2024-43828

Mitre link : CVE-2024-43828

CVE.ORG link : CVE-2024-43828

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

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