Description
Gitoxide gix-mailmap before 0.35.0 contains a denial of service vulnerability that allows attackers to exhaust CPU through quadratic-time parsing in Snapshot::from_bytes. Attackers can commit a crafted .mailmap with descending-ordered entries forcing repeated front inserts, blocking workers running log, blame, or shortlog for minutes.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| GitoxideLabs | gix-mailmap | < 0.35.0 | 0.35.0 |
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 | rust-gix-mailmap | No fix yet | — |
| Debian 13 | rust-gix-mailmap | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | rust-gix | No fix yet | — |
| Ubuntu 26.04 LTS | rust-gix | No fix yet | — |
References
- GitHub Security Advisory (GHSA-pmpw-wwcm-r8rc) vendor-advisory
- VulnCheck Advisory: Gitoxide gix-mailmap before 0.35.0 CPU Denial of Service via .mailmap Parsing third-party-advisory