Tracker / CVE-2023-52932
CVE-2023-52932
Medium 5.5
In the Linux kernel, the following vulnerability has been resolved: mm/swapfile: add cond_resched() in get_swap_pages() The softlockup still occurs in get_swap_pages() under memory pressure. 64 CPU cores, 64GB memory, and 28 zram devices, the disksize of each zram device is 50MB with same priority as si. Use the stress-ng tool to increase memory pressure, causing the system to oom frequently. The plist_for_each_entry_safe() loops in get_swap_pages() could reach tens of thousands of times to find available space (extreme case: cond_resched() is not called in scan_swap_map_slots()). Let's add cond_resched() into get_swap_pages() when failed to find available space to avoid softlockup.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · … → 4.14.306 |
| linux | linux_kernel · 4.15 → 4.19.273 |
| linux | linux_kernel · 4.20 → 5.4.232 |
| linux | linux_kernel · 5.11 → 5.15.93 |
| linux | linux_kernel · 5.16 → 6.1.11 |
| linux | linux_kernel · 5.5 → 5.10.168 |
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.