Tracker / CVE-2025-21694
CVE-2025-21694
In the Linux kernel, the following vulnerability has been resolved: fs/proc: fix softlockup in __read_vmcore (part 2) Since commit 5cbcb62dddf5 ("fs/proc: fix softlockup in __read_vmcore") the number of softlockups in __read_vmcore at kdump time have gone down, but they still happen sometimes. In a memory constrained environment like the kdump image, a softlockup is not just a harmless message, but it can interfere with things like RCU freeing memory, causing the crashdump to get stuck. The second loop in __read_vmcore has a lot more opportunities for natural sleep points, like scheduling out while waiting for a data write to happen, but apparently that is not always enough. Add a cond_resched() to the second loop in __read_vmcore to (hopefully) get rid of the softlockups.
Prodotti e versioni affette
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 4.19.317 → 4.20 |
| linux | linux_kernel · 5.10.221 → 5.10.234 |
| linux | linux_kernel · 5.15.162 → 5.15.177 |
| linux | linux_kernel · 5.4.279 → 5.4.290 |
| linux | linux_kernel · 6.1.95 → 6.1.127 |
| linux | linux_kernel · 6.6.35 → 6.6.74 |
| linux | linux_kernel · 6.9.6 → 6.12.11 |