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  5. GHSA-2vh6-hw4j-32ww

GHSA-2vh6-hw4j-32ww: gix-packetline: reachable panic on empty side-band packet (pre-auth network DoS)

August 28, 2026

gix-packetline panics when it receives a side-band packet line that contains only the band-id byte with an empty payload. A malicious Git server - or any remote a victim clones/fetches from - can abort the gix client process during a normal fetch. This is a pre-authentication, network-triggered denial of service.

References

  • github.com/GitoxideLabs/gitoxide/commit/4bef04ae8a261634200b3a6faabdd77e25aeb8c1
  • github.com/GitoxideLabs/gitoxide/pull/2638
  • github.com/GitoxideLabs/gitoxide/releases/tag/gix-packetline-v0.21.5
  • github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-2vh6-hw4j-32ww
  • github.com/advisories/GHSA-2vh6-hw4j-32ww

Code Behaviors & Features

Detect and mitigate GHSA-2vh6-hw4j-32ww with GitLab Dependency Scanning

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Affected versions

All versions before 0.21.5

Fixed versions

  • 0.21.5

Solution

Upgrade to version 0.21.5 or above.

Impact 6.5 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Learn more about CVSS

Weakness

  • CWE-191: Integer Underflow (Wrap or Wraparound)

Source file

cargo/gix-packetline/GHSA-2vh6-hw4j-32ww.yml

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