Tracker / CVE-2024-42084
CVE-2024-42084
Medium 5.5
In the Linux kernel, the following vulnerability has been resolved: ftruncate: pass a signed offset The old ftruncate() syscall, using the 32-bit off_t misses a sign extension when called in compat mode on 64-bit architectures. As a result, passing a negative length accidentally succeeds in truncating to file size between 2GiB and 4GiB. Changing the type of the compat syscall to the signed compat_off_t changes the behavior so it instead returns -EINVAL. The native entry point, the truncate() syscall and the corresponding loff_t based variants are all correct already and do not suffer from this mistake.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 3.9 → 4.19.317 |
| linux | linux_kernel · 4.20 → 5.4.279 |
| linux | linux_kernel · 5.11 → 5.15.162 |
| linux | linux_kernel · 5.16 → 6.1.97 |
| linux | linux_kernel · 5.5 → 5.10.221 |
| linux | linux_kernel · 6.2 → 6.6.37 |
| linux | linux_kernel · 6.7 → 6.9.8 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.