Multiple race conditions in the Advanced Union Filesystem (aufs) aufs3-mmap.patch and aufs4-mmap.patch patches for the Linux kernel 3.x and 4.x allow local users to cause a denial of service (use-after-free and BUG) or possibly gain privileges via a (1) madvise or (2) msync system call, related to mm/madvise.c and mm/msync.c.
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
Link | Tags |
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http://www.debian.org/security/2015/dsa-3364 | third party advisory vendor advisory |
http://sourceforge.net/p/aufs/mailman/message/34449209/ | mailing list third party advisory exploit |
http://www.openwall.com/lists/oss-security/2015/09/22/10 | third party advisory mailing list |
http://www.ubuntu.com/usn/USN-2777-1 | third party advisory vendor advisory |