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rtld: Check __libc_enable_secure before honoring LD_PREFER_MAP_32BIT_EXEC (CVE-2019...
authorMarcin Kościelnicki <mwk@0x04.net>
Wed, 20 Nov 2019 23:20:15 +0000 (00:20 +0100)
committerFlorian Weimer <fweimer@redhat.com>
Fri, 22 Nov 2019 12:09:23 +0000 (13:09 +0100)
commit37c90e117310728a4ad1eb998c0bbe7d79c4a398
treecc4af805d235458cca7719fe911074fd4d897421tree
parenta4b3bbf71e8a608ac6ee4f423b5e2db50e06b846commit | diff
rtld: Check __libc_enable_secure before honoring LD_PREFER_MAP_32BIT_EXEC (CVE-2019-19126) [BZ #25204]

The problem was introduced in glibc 2.23, in commit
b9eb92ab05204df772eb4929eccd018637c9f3e9
("Add Prefer_MAP_32BIT_EXEC to map executable pages with MAP_32BIT").

(cherry picked from commit d5dfad4326fc683c813df1e37bbf5cf920591c8e)
NEWS diff | blob | blame | history
sysdeps/unix/sysv/linux/x86_64/64/dl-librecon.h diff | blob | blame | history
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