Bug 2122627 (CVE-2021-3826)

Summary:	CVE-2021-3826 libiberty: Heap/stack buffer overflow in the dlang_lname function in d-demangle.c
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	ahajkova, ailan, aoliva, blarsen, dmalcolm, dvlasenk, elima, erik-fedora, fedora, fweimer, gdb-bugs, henrik, jakub, jan, jwakely, keiths, kevinb, klember, ktietz, law, manisandro, marcandre.lureau, mcermak, michal.skrivanek, mnewsome, mperina, mpolacek, mprchlik, nickc, ohudlick, patrick, pmuldoon, rebus, rjones, rschirone91, sergiodj, sipoyare, virt-maint, yahmad
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in Libiberty. A heap and stack buffer overflow found in the dlang_lname function in d-demangle.c leads to a denial of service.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-05-23 16:41:59 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2132586, 2132587, 2132588, 2132589, 2132590, 2132591, 2132592, 2132593, 2132594, 2132595, 2132596, 2132597, 2132598, 2132599, 2132600, 2132601, 2132602, 2132603, 2149659
Bug Blocks:	2122629

Description Pedro Sampaio 2022-08-30 13:21:15 UTC

Heap/stack buffer overflow in the dlang_lname function in d-demangle.c in libiberty allows attackers to potentially cause a denial of service (segmentation fault and crash) via a crafted mangled symbol.

Upstream fix:

https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=5481040197402be6dfee265bd2ff5a4c88e30505

References:

https://gcc.gnu.org/pipermail/gcc-patches/2021-September/579985.html

Comment 1 Patrick Monnerat 2022-08-30 15:44:53 UTC

Thanks for the "heads-up"!
insight was already OK in Fedora>=36.
In F35, insight-13.0.50.20220502-1.fc35 fixes the problem: https://koji.fedoraproject.org/koji/buildinfo?buildID=2055285 currently testing pending.

Comment 2 Fedora Update System 2022-09-08 11:07:05 UTC

FEDORA-2022-8e1df11a7a has been pushed to the Fedora 35 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 4 Dhananjay Arunesh 2022-10-06 08:24:59 UTC

Created binutils tracking bugs for this issue:

Affects: fedora-all [bug 2132594]


Created gcc tracking bugs for this issue:

Affects: fedora-all [bug 2132586]


Created gdb tracking bugs for this issue:

Affects: fedora-all [bug 2132595]


Created mingw-binutils tracking bugs for this issue:

Affects: fedora-all [bug 2132596]


Created mingw-gcc tracking bugs for this issue:

Affects: fedora-all [bug 2132587]


Created mingw-gdb tracking bugs for this issue:

Affects: fedora-all [bug 2132603]

Comment 7 errata-xmlrpc 2023-05-23 11:27:08 UTC

This issue has been addressed in the following products:

  Red Hat Software Collections for Red Hat Enterprise Linux 7

Via RHSA-2023:3269 https://access.redhat.com/errata/RHSA-2023:3269

Comment 8 Product Security DevOps Team 2023-05-23 16:41:55 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-3826

Comment 9 errata-xmlrpc 2023-11-07 08:14:46 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:6372 https://access.redhat.com/errata/RHSA-2023:6372