CVE-2024-43845

In the Linux kernel, the following vulnerability has been resolved: udf: Fix bogus checksum computation in udf_rename() Syzbot reports uninitialized memory access in udf_rename() when updating checksum of '..' directory entry of a moved directory. This is indeed true as we pass on-stack diriter.fi to the udf_update_tag() and because that has only struct fileIdentDesc included in it and not the impUse or name fields, the checksumming function is going to checksum random stack contents beyond the end of the structure. This is actually harmless because the following udf_fiiter_write_fi() will recompute the checksum from on-disk buffers where everything is properly included. So all that is needed is just removing the bogus calculation.

CVSS v3 3.3 LOW

3.3^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.8 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/27ab33854873e6fb958cb074681a0107cc2ecc4c	Patch
https://git.kernel.org/stable/c/40d7b3ed52449d36143bab8d3e70926aa61a60f4	Patch
https://git.kernel.org/stable/c/9c439311c13fc6faab1921441165c9b8b500c83b	Patch
https://git.kernel.org/stable/c/c996b570305e7a6910c2ce4cdcd4c22757ffe241	Patch
https://git.kernel.org/stable/c/fe2ead240c31e8d158713beca9d0681a6e6a53ab	Patch

Configurations

Configuration 1 (hide)

OR	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 : 2024-10-25 19:51

NVD link : CVE-2024-43845

Mitre link : CVE-2024-43845

CVE.ORG link : CVE-2024-43845

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-908

Use of Uninitialized Resource

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