CVE-2024-43845
LowIn 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 3.1 score
3.3
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Weakness type
CWE-908CVE-2024-43845 is classified as CWE-908
See CWE-908 on MITRE CWE for full details on this weakness type.
References
The following references provide additional information about CVE-2024-43845 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/27ab33854873e6fb958cb074681a0107cc2ecc4c
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PatchKernel patch commithttps://git.kernel.org/stable/c/40d7b3ed52449d36143bab8d3e70926aa61a60f4
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PatchKernel patch commithttps://git.kernel.org/stable/c/9c439311c13fc6faab1921441165c9b8b500c83b
Frequently asked questions
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What is CVE-2024-43845?
CVE-2024-43845 is a Low severity Linux kernel vulnerability with a CVSS score of 3.3 out of 10 . CVE-2024-43845 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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What is the CVSS score for CVE-2024-43845?
CVE-2024-43845 has a CVSS score of 3.3 out of 10, rated Low severity (CVSS 3.1). The vector string is
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N. -
Is there a patch available for CVE-2024-43845?
No patch is currently available for CVE-2024-43845. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
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Is CVE-2024-43845 actively exploited?
No — CVE-2024-43845 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.