| Name | CVE-2021-45940 |
| Description | libbpf 0.6.0 and 0.6.1 has a heap-based buffer overflow (4 bytes) in __bpf_object__open (called from bpf_object__open_mem and bpf-object-fuzzer.c). |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| libbpf (PTS) | bullseye | 0.3-2 | vulnerable |
| bookworm | 1.1.0-1 | fixed |
| sid, trixie | 1.5.0-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| libbpf | source | (unstable) | 0.7.0-2 | | | |
Notes
[bullseye] - libbpf <postponed> (No actionable information, revisit when/if more details available)
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40868
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libbpf/OSV-2021-1562.yaml
Fixed in 0.7.0 upstream per identified range of commits
It's unclear if 0.3 is affected, the introducing commit presented by oss-fuzz is misleading
since that refers to the first version when oss-fuzz started to test libbpf. If anyone confirms
via bisecting that 0.3.0 is affected, this can be revisited