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No exploitation reportedFix available

CVE-2021-3826

No exploitation reported by the sources we read.

  • Published2022-09-01
  • WeaknessCWE-119 · CWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2022-09-01CVE publishedCNA

Versions per branch

NVD
Fedoraproject fedora
BranchAffectedFixed in
35.x= 35no fix published
36.x= 36no fix published
37.x= 37no fix published
Gnu gcc
BranchAffectedFixed in
11.2= 11.2no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As redhat, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • gcc
    Affected
    • = gcc 11.2.0no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2022-11-14

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • binutilsTuxCare:AlmaLinux:9.6all versions · fixed in 2.35.2-63.el9.tuxcare.els10and 5 other packages
  • binutilsTuxCare:AlmaLinux:9.2all versions · fixed in 2.35.2-37.el9.tuxcare.els7and 5 other packages
  • binutilsSUSE:OpenStack Cloud Crowbar 9all versions · fixed in 2.39-9.50.1
  • binutilsSUSE:OpenStack Cloud 9all versions · fixed in 2.39-9.50.1
  • binutilsSUSE:Manager Server 4.1all versions · fixed in 2.39-150100.7.40.1
  • binutilsSUSE:Manager Retail Branch Server 4.1all versions · fixed in 2.39-150100.7.40.1
  • binutilsSUSE:Manager Proxy 4.1all versions · fixed in 2.39-150100.7.40.1
  • binutilsSUSE:Linux Enterprise Software Development Kit 12 SP5all versions · fixed in 2.39-9.50.1and 2 other packages

48 more package ranges on OSV.dev

Full record on NVD

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Published
2022-09-01
Last Modified
2026-11-02
NVD status
Modified
GitHub Advisory
GHSA-88rg-m78j-x8xw

Frequently asked questions

What is CVE-2021-3826?

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.

Is CVE-2021-3826 actively exploited?

Active exploitation of CVE-2021-3826 has not been confirmed. Its EPSS score was 1.5% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-3826?

CVE-2021-3826 has a CVSS v3 base score of 6.5 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

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