VYPR
← All advisories
High severity7.8NVD Advisory· Published Aug 17, 2024· Updated Aug 4, 2026

CVE-2024-43845

CVE-2024-43845

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

53

Patches

Vulnerability mechanics

References

4

News mentions

0

No linked articles in our index yet.