MitreCVELIST:CVE-2012-6422CVE-2012-6422
The kernel in Samsung Galaxy S2, Galaxy Note 2, MEIZU MX, and possibly other Android devices, when running an Exynos 4210 or 4412 processor, uses weak permissions (0666) for /dev/exynos-mem, which allows attackers to read or write arbitrary physical memory and gain privileges via a crafted application, as demonstrated by ExynosAbuse.
References
arstechnica.com/security/2012/12/developer-warns-of-critical-vulnerability-in-many-samsung-smartphones/
forum.xda-developers.com/showthread.php?p=35469999
forum.xda-developers.com/showthread.php?t=2051290
osvdb.org/88467
project-voodoo.org/articles/instant-fix-app-for-exynos-mem-abuse-vulnerability-no-root-required-reversible
www.sammobile.com/2012/12/16/major-vulnerability-found-on-exynos-4-devices/
www.securityweek.com/new-vulnerability-exposed-samsungs-android-devices
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