Bug 1906777 (CVE-2020-16592) - CVE-2020-16592 binutils: use-after-free in bfd_hash_lookup could result in DoS
Summary: CVE-2020-16592 binutils: use-after-free in bfd_hash_lookup could result in DoS
Alias: CVE-2020-16592
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1906778 1906779
Blocks: 1906786
TreeView+ depends on / blocked
Reported: 2020-12-11 11:56 UTC by Michael Kaplan
Modified: 2021-02-16 18:44 UTC (History)
23 users (show)

Fixed In Version: binutils 2.35
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed: 2020-12-23 00:27:51 UTC

Attachments (Terms of Use)

Description Michael Kaplan 2020-12-11 11:56:00 UTC
A use after free issue exists in the Binary File Descriptor (BFD) library (aka libbfd) in GNU Binutils 2.34 in bfd_hash_lookup, as demonstrated in nm-new, that can cause a denial of service via a crafted file.

External References:


Comment 1 Michael Kaplan 2020-12-11 11:56:48 UTC
Created binutils tracking bugs for this issue:

Affects: fedora-32 [bug 1906778]

Created mingw-binutils tracking bugs for this issue:

Affects: fedora-all [bug 1906779]

Comment 5 Todd Cullum 2020-12-22 20:11:29 UTC

binutils as shipped in Red Hat Developer Toolsets 9 and 10, Red Hat Enterprise Linux 8 BaseOS and GCC Toolsets 9 and 10, are all not affected by this flaw as it was introduced in a newer version of binutils code than shipped for BaseOS and the 9 toolsets, and already patched in the versions shipped with 10 toolsets.

Comment 6 Product Security DevOps Team 2020-12-23 00:27:51 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):


Note You need to log in before you can comment on or make changes to this bug.