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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 12:46:54 +0000 (13:46 +0100)
commit7966ce07e89fa4ccc8fdba00d4439fc652862462
treea40a5fcae478b1a336ea11b70ee5ded1307a0808tree
parentcedb3e47c68d319607736a820da2d5b3b8ddff6fcommit | 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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