cve-2024-43845
Vulnerability from cvelistv5
Published
2024-08-17 09:21
Modified
2024-12-19 09:17
Severity ?
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/27ab33854873e6fb958cb074681a0107cc2ecc4cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/40d7b3ed52449d36143bab8d3e70926aa61a60f4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9c439311c13fc6faab1921441165c9b8b500c83bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c996b570305e7a6910c2ce4cdcd4c22757ffe241Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fe2ead240c31e8d158713beca9d0681a6e6a53abPatch
Impacted products
Vendor Product Version
Linux Linux Version: 626860c470ff88e5f7f22a282efd1bfe953a1b54
Version: 9616d00140a1cdf0bfa557019b36923dc7796942
Version: e9109a92d2a95889498bed3719cd2318892171a2
Version: e9109a92d2a95889498bed3719cd2318892171a2
Version: e9109a92d2a95889498bed3719cd2318892171a2
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   Linux Linux Version: 6.3
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