{"id":"UBUNTU-CVE-2022-39253","details":"Git is an open source, scalable, distributed revision control system. Versions prior to 2.30.6, 2.31.5, 2.32.4, 2.33.5, 2.34.5, 2.35.5, 2.36.3, and 2.37.4 are subject to exposure of sensitive information to a malicious actor. When performing a local clone (where the source and target of the clone are on the same volume), Git copies the contents of the source's `$GIT_DIR/objects` directory into the destination by either creating hardlinks to the source contents, or copying them (if hardlinks are disabled via `--no-hardlinks`). A malicious actor could convince a victim to clone a repository with a symbolic link pointing at sensitive information on the victim's machine. This can be done either by having the victim clone a malicious repository on the same machine, or having them clone a malicious repository embedded as a bare repository via a submodule from any source, provided they clone with the `--recurse-submodules` option. Git does not create symbolic links in the `$GIT_DIR/objects` directory. The problem has been patched in the versions published on 2022-10-18, and backported to v2.30.x. Potential workarounds: Avoid cloning untrusted repositories using the `--local` optimization when on a shared machine, either by passing the `--no-local` option to `git clone` or cloning from a URL that uses the `file://` scheme. Alternatively, avoid cloning repositories from untrusted sources with `--recurse-submodules` or run `git config --global protocol.file.allow user`.","modified":"2026-02-04T03:19:59.502193Z","published":"2022-10-18T17:00:00Z","related":["USN-5686-1","USN-5686-3","USN-5686-4"],"upstream":["CVE-2022-39253"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-39253"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5686-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5686-3"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5686-4"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2022-39253"}],"affected":[{"package":{"name":"git","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/git@1:2.7.4-0ubuntu1.10+esm6?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.7.4-0ubuntu1.10+esm6"}]}],"versions":["1:2.5.0-1","1:2.6.2-1","1:2.6.3-1","1:2.6.4-1","1:2.7.0~rc3-1","1:2.7.0-1","1:2.7.3-0ubuntu1","1:2.7.4-0ubuntu1","1:2.7.4-0ubuntu1.1","1:2.7.4-0ubuntu1.2","1:2.7.4-0ubuntu1.3","1:2.7.4-0ubuntu1.4","1:2.7.4-0ubuntu1.5","1:2.7.4-0ubuntu1.6","1:2.7.4-0ubuntu1.7","1:2.7.4-0ubuntu1.8","1:2.7.4-0ubuntu1.9","1:2.7.4-0ubuntu1.10","1:2.7.4-0ubuntu1.10+esm1","1:2.7.4-0ubuntu1.10+esm3","1:2.7.4-0ubuntu1.10+esm4","1:2.7.4-0ubuntu1.10+esm5"],"ecosystem_specific":{"availability":"Available 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