Tracker / CVE-2026-43178
CVE-2026-43178
High 7.8
In the Linux kernel, the following vulnerability has been resolved: procfs: fix possible double mmput() in do_procmap_query() When user provides incorrectly sized buffer for build ID for PROCMAP_QUERY we return with -ENAMETOOLONG error. After recent changes this condition happens later, after we unlocked mmap_lock/per-VMA lock and did mmput(), so original goto out is now wrong and will double-mmput() mm_struct. Fix by jumping further to clean up only vm_file and name_buf.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 6.12.70 → 6.12.75 |
| linux | linux_kernel · 6.18.10 → 6.18.16 |
| linux | linux_kernel · 6.19.1 → 6.19.6 |
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.