CVE-2021-45941
CVE-2021-45941 is a medium-severity vulnerability in Libbpf Project Libbpf with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- CVSS v2: 4.3
- EPSS exploit prediction: 1% (62nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Libbpf Project Libbpf
- Published:
- Last modified:
Description
libbpf 0.6.0 and 0.6.1 has a heap-based buffer overflow (8 bytes) in __bpf_object__open (called from bpf_object__open_mem and bpf-object-fuzzer.c).
Frequently asked questions
- What is CVE-2021-45941?
- libbpf 0.6.0 and 0.6.1 has a heap-based buffer overflow (8 bytes) in __bpf_object__open (called from bpf_object__open_mem and bpf-object-fuzzer.c).
- How severe is CVE-2021-45941?
- CVE-2021-45941 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2021-45941 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-45941?
- CVE-2021-45941 primarily affects Libbpf Project Libbpf. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2021-45941?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-45941 published?
- CVE-2021-45941 was published on 2022-01-01 and last updated on 2026-06-17.
References
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40957
- https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libbpf/OSV-2021-1576.yaml
Affected products (2)
- cpe:2.3:a:libbpf_project:libbpf:0.6.0:*:*:*:*:*:*:*
- cpe:2.3:a:libbpf_project:libbpf:0.6.1:*:*:*:*:*:*:*
More vulnerabilities in Libbpf Project Libbpf
- CVE-2021-45940 — Medium (CVSS 6.5): libbpf 0.6.0 and 0.6.1 has a heap-based buffer overflow (4 bytes) in __bpf_object__open (called from…
- CVE-2025-29481 — Medium (CVSS 6.2): Buffer Overflow vulnerability in libbpf 1.5.0 allows a local attacker to execute arbitrary code via the…
All CVEs affecting Libbpf Project Libbpf →
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