UBUNTU-CVE-2026-44471

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Source
https://ubuntu.com/security/CVE-2026-44471
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44471.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-44471
Upstream
  • CVE-2026-44471
Published
2026-05-13T22:16:00Z
Modified
2026-05-20T22:03:08.354296341Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

gitoxide is an implementation of git written in Rust. Prior to 0.21.1, a malicious tree can be constructed that will, when checked out with gitoxide, permit writing an attacker-controlled symlink into any existing directory the user has write access to. During checkout, all symlink index entries are deferred and created after regular files using a single shared gixworktree::Stack. Internally, this uses a gixfs::Stack. gixfs::Stack::makerelativepathcurrent() caches validated path prefixes: when the previously-processed leaf component exactly matches the leading component(s) of the next path, the leaf-to-directory transition at gix-fs/src/stack.rs invokes only delegate.pushdirectory(), never delegate.push(). In gixworktree::stack::delegate::StackDelegate, when the state member is State::CreateDirectoryAndAttributesStack, Attributes::pushdirectory() only loads attributes (from the ODB, in the clone case), and does not perform any other checks. The on-disk symlinkmetadata() check and unlink-on-collision live in StackDelegate::push()'s invocation of createleadingdirectory(), which is therefore bypassed for the cached prefix. The final symlink is created with plain std::os::unix::fs::symlink, which follows symlinks in parent directories. Therefore, it's possible to provide a tree with duplicate symlink and directory entries that exploits this. This vulnerability is fixed in 0.21.1.

References

Affected packages

Ubuntu:24.04:LTS / rust-gix-fs

Package

Name
rust-gix-fs
Purl
pkg:deb/ubuntu/rust-gix-fs?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.8.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "librust-gix-fs-dev",
            "binary_version": "0.8.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44471.json"

Ubuntu:25.10 / rust-gix-fs

Package

Name
rust-gix-fs
Purl
pkg:deb/ubuntu/rust-gix-fs?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.12.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "librust-gix-fs-dev",
            "binary_version": "0.12.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44471.json"

Ubuntu:26.04:LTS / rust-gix-fs

Package

Name
rust-gix-fs
Purl
pkg:deb/ubuntu/rust-gix-fs?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.12.1-1
0.16.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "librust-gix-fs-dev",
            "binary_version": "0.16.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44471.json"