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SUSE:SLE-12-SP3:GA
xorg-x11-server.27646
u_xkb-Check-for-tbGetBuffer-failure.patch
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File u_xkb-Check-for-tbGetBuffer-failure.patch of Package xorg-x11-server.27646
Patch-mainline: To be upstreamed Author: Michal Srb <msrb@suse.com> Subject: xkb: Check for tbGetBuffer failure. References: bnc#1051150 CVE-2017-13723 The requested length can be longer than the length of the input string because of escaping. --- It can be triggered by a long string containing characters that need escaping. xkb/xkbtext.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/xkb/xkbtext.c b/xkb/xkbtext.c index 6dd979409..d77f7c9ed 100644 --- a/xkb/xkbtext.c +++ b/xkb/xkbtext.c @@ -580,6 +580,11 @@ XkbStringText(char *str, unsigned format) if (ok) return str; buf = tbGetBuffer(len + 1); + if (!buf) { + buf = tbGetBuffer(2); + buf[0] = '\0'; + return buf; + } for (in = str, out = buf; *in != '\0'; in++) { if (isprint(*in)) *out++ = *in; -- 2.12.3
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