cve-2021-47567
Vulnerability from cvelistv5
Published
2024-05-24 15:12
Modified
2024-12-19 07:44
Severity ?
EPSS score ?
0.08% (0.21983)
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5bb60ea611db1e04814426ed4bd1c95d1487678e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c4e3ff8b8b1d54f0c755670174c453b06e17114b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dfe906da9a1abebdebe8b15bb3e66a2578f6c4c7
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/5bb60ea611db1e04814426ed4bd1c95d1487678e
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c4e3ff8b8b1d54f0c755670174c453b06e17114b
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/dfe906da9a1abebdebe8b15bb3e66a2578f6c4c7
Impacted products
Vendor Product Version
Linux Linux Version: c118c7303ad528be8ff2aea8cd1ee15452c763f0
Version: c118c7303ad528be8ff2aea8cd1ee15452c763f0
Version: c118c7303ad528be8ff2aea8cd1ee15452c763f0
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   Linux Linux Version: 5.10
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