Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: powerpc/32: Fix hardlockup on vmap stack overflow Since the commit c118c7303ad5 ("powerpc/32: Fix vmap stack - Do not activate MMU before reading task struct") a vmap stack overflow results in a hard lockup. This is because emergency_ctx is still addressed with its virtual address allthough data MMU is not active anymore at that time. Fix it by using a physical address instead.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected c118c7303ad528be8ff2aea8cd1ee15452c763f0 before dfe906da9a1abebdebe8b15bb3e66a2578f6c4c7; affected c118c7303ad528be8ff2aea8cd1ee15452c763f0 before c4e3ff8b8b1d54f0c755670174c453b06e17114b; affected c118c7303ad528be8ff2aea8cd1ee15452c763f0 before 5bb60ea611db1e04814426ed4bd1c95d1487678e; affected 3b234b4a6651ed6bdca94553aa0038fc7ded9271; affected 5.9.5 before 5.10 |
| Linux / Linux | affected 5.10; unaffected 0 before 5.10; unaffected 5.10.83 through 5.10.*; unaffected 5.15.6 through 5.15.*; unaffected 5.16 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/dfe906da9a1abebdebe8b15bb3e66a2578f6c4c7
- https://git.kernel.org/stable/c/c4e3ff8b8b1d54f0c755670174c453b06e17114b
- https://git.kernel.org/stable/c/5bb60ea611db1e04814426ed4bd1c95d1487678e
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.