Tracker / CVE-2023-52810
CVE-2023-52810
High 7.8
In the Linux kernel, the following vulnerability has been resolved: fs/jfs: Add check for negative db_l2nbperpage l2nbperpage is log2(number of blks per page), and the minimum legal value should be 0, not negative. In the case of l2nbperpage being negative, an error will occur when subsequently used as shift exponent. Syzbot reported this bug: UBSAN: shift-out-of-bounds in fs/jfs/jfs_dmap.c:799:12 shift exponent -16777216 is negative
Affected products and versions
| linux | linux_kernel · … → 4.14.331 |
|---|---|
| linux | linux_kernel · 4.15 → 4.19.300 |
| linux | linux_kernel · 4.20 → 5.4.262 |
| linux | linux_kernel · 5.11 → 5.15.140 |
| linux | linux_kernel · 5.16 → 6.1.64 |
| linux | linux_kernel · 5.5 → 5.10.202 |
| linux | linux_kernel · 6.2 → 6.5.13 |
| linux | linux_kernel · 6.6 → 6.6.3 |
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.