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.
CVE-2021-3826
CVSS base score
6.5 (v3.1)
Severity
MEDIUM
Attack vector
Network
Weakness
CWE-119, CWE-787
Last modified
November 2, 2026
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Affected products
gnu gcc
fedoraproject fedora
References
- gcc.gnu.org Broken Link
- gcc.gnu.org Mailing List, Patch, Vendor Advisory
- lists.fedoraproject.org Mailing List, Third Party Advisory
- lists.fedoraproject.org Mailing List, Third Party Advisory
- lists.fedoraproject.org Mailing List, Third Party Advisory
- lists.fedoraproject.org Mailing List, Third Party Advisory
- lists.fedoraproject.org Mailing List, Third Party Advisory
- gcc.gnu.org Broken Link
- gcc.gnu.org Mailing List, Patch, Vendor Advisory
- lists.fedoraproject.org Mailing List, Third Party Advisory