Buffer overflow in Gnu Gcc
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.
Vulnerability class: Buffer Overflow
EPSS: 0.011 (60.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
Affected products
- Gnu Gcc — versions 11.2
- Fedoraproject Fedora — versions 35, 36, 37
- N/a Gcc — versions gcc 11.2.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Patch, Mailing List, Vendor Advisory)
- secalert@redhat.com (Broken Link)
- secalert@redhat.com (vendor-advisory, Mailing List, Third Party Advisory)
- secalert@redhat.com (vendor-advisory, Mailing List, Third Party Advisory)
- secalert@redhat.com (vendor-advisory, Mailing List, Third Party Advisory)
- secalert@redhat.com (vendor-advisory, Mailing List, Third Party Advisory)
- secalert@redhat.com (vendor-advisory, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-3826?
- CVE-2021-3826 is a medium-severity vulnerability in Gnu Gcc, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.5/10. Published 2022-09-01.
- How severe is CVE-2021-3826?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2021-3826 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.