Bug 1764223 - glibc: elf: Refuse to dlopen PIE objects [BZ #24323]
Summary: glibc: elf: Refuse to dlopen PIE objects [BZ #24323]
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: glibc
Version: 8.2
Hardware: Unspecified
OS: Unspecified
Target Milestone: rc
: 8.0
Assignee: DJ Delorie
QA Contact: qe-baseos-tools-bugs
Depends On:
Blocks: 1746918
TreeView+ depends on / blocked
Reported: 2019-10-22 13:41 UTC by Carlos O'Donell
Modified: 2020-04-28 16:50 UTC (History)
7 users (show)

Fixed In Version: glibc-2.28-94
Doc Type: No Doc Update
Doc Text:
Clone Of:
Last Closed: 2020-04-28 16:50:19 UTC
Type: Bug
Target Upstream Version:

Attachments (Terms of Use)

System ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:1828 None None None 2020-04-28 16:50:46 UTC
Sourceware 24323 P2 RESOLVED dlopen should not be able open PIE objects 2020-09-19 11:28:16 UTC

Internal Links: 1774115

Description Carlos O'Donell 2019-10-22 13:41:26 UTC
We need to backport this to disallow invalid object loading.

commit 2c75b545de6fe3c44138799c68217a94bc669a88
Author: Florian Weimer <fweimer@redhat.com>
Date:   Tue Jun 18 16:42:10 2019 +0200

    elf: Refuse to dlopen PIE objects [BZ #24323]
    Another executable has already been mapped, so the dynamic linker
    cannot perform relocations correctly for the second executable.

Please backport patch to Fedora (if required):
Fedora 31
Fedora 30
Fedora 29

Comment 3 Sergey Kolosov 2020-02-20 14:01:36 UTC
Verified with glibc elf/tst-dlopen-pie test case.

Comment 5 errata-xmlrpc 2020-04-28 16:50:19 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.


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