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_service:tar_scm_kernel_repo:CVE-2021-20277.patch
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File _service:tar_scm_kernel_repo:CVE-2021-20277.patch of Package samba
From fab6b79b7724f0b636963be528483e3e946884aa Mon Sep 17 00:00:00 2001 From: Douglas Bagnall <douglas.bagnall@catalyst.net.nz> Date: Tue, 8 Dec 2020 21:32:09 +1300 Subject: [PATCH] CVE-2021-20277 ldb/attrib_handlers casefold: stay in bounds For a string that had N spaces at the beginning, we would try to move N bytes beyond the end of the string. BUG: https://bugzilla.samba.org/show_bug.cgi?id=14655 Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz> Reviewed-by: Andrew Bartlett <abartlet@samba.org> (cherry-picked from commit for master) --- lib/ldb/common/attrib_handlers.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/ldb/common/attrib_handlers.c b/lib/ldb/common/attrib_handlers.c index b5212b731596..c6ef5ad477b0 100644 --- a/lib/ldb/common/attrib_handlers.c +++ b/lib/ldb/common/attrib_handlers.c @@ -76,7 +76,7 @@ int ldb_handler_fold(struct ldb_context *ldb, void *mem_ctx, /* remove leading spaces if any */ if (*s == ' ') { - for (t = s; *s == ' '; s++) ; + for (t = s; *s == ' '; s++, l--) ; /* remove leading spaces by moving down the string */ memmove(t, s, l);
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