Tracker / CVE-2025-38312
CVE-2025-38312
Medium 5.5
In the Linux kernel, the following vulnerability has been resolved: fbdev: core: fbcvt: avoid division by 0 in fb_cvt_hperiod() In fb_find_mode_cvt(), iff mode->refresh somehow happens to be 0x80000000, cvt.f_refresh will become 0 when multiplying it by 2 due to overflow. It's then passed to fb_cvt_hperiod(), where it's used as a divider -- division by 0 will result in kernel oops. Add a sanity check for cvt.f_refresh to avoid such overflow... Found by Linux Verification Center (linuxtesting.org) with the Svace static analysis tool.
Affected products and versions
| debian | debian_linux |
|---|---|
| linux | linux_kernel · 2.6.14 → 5.4.295 |
| linux | linux_kernel · 5.11 → 5.15.186 |
| linux | linux_kernel · 5.16 → 6.1.142 |
| linux | linux_kernel · 5.5 → 5.10.239 |
| linux | linux_kernel · 6.13 → 6.15.3 |
| linux | linux_kernel · 6.2 → 6.6.94 |
| linux | linux_kernel · 6.7 → 6.12.34 |
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.