Description
Buffer overflow in the C implementation of the apply_delta function in _pack.c in Dulwich before 0.9.9 allows remote attackers to execute arbitrary code via a crafted pack file.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | dulwich | 0.10.1-1 | — |
| Debian 13 | dulwich | 0.10.1-1 | — |
| Debian 12 | dulwich | 0.10.1-1 | — |
| Debian 7 | dulwich | 0.8.5-2+deb7u2 | DSA-3206-1 |
| Debian 6.0 | dulwich | 0.6.1-1+deb6u1 | DLA-231-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | python-dulwich | 0.12.0-2.3 | openSUSE-SU-2026:11190-1, openSUSE-SU-2024:14139-1, openSUSE-SU-2024:10124-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | dulwich | < 0.9.9 | 0.9.9 | GHSA-vjjf-3rvg-gv3v |
Advisories 5
- openSUSE-SU-2026:11190-1 python313-dulwich-1.2.7-1.1 on GA media SUSE / openSUSE Security Updates · Jul 7, 2026
- DLA-231-1 dulwich - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3206-1 dulwich - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:14139-1 python310-dulwich-0.21.7-1.3 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10124-1 python-dulwich-0.12.0-2.3 on GA media SUSE / openSUSE Security Updates · May 7, 2025
References
- DSA-3206 vendor-advisory
- [oss-security] 20150322 Dulwich security issue mailing-list