Stack-based buffer overflow in string/strcoll_l.c in the GNU C Library (aka glibc or libc6) 2.17 and earlier allows context-dependent attackers to cause a denial of service (crash) or possibly execute arbitrary code via a long string that triggers a malloc failure and use of the alloca function.
Exploitability
AV:NAC:HAu:NImpact
C:PI:PA:P5.1/AV:N/AC:H/Au:N/C:P/I:P/A:P