[Bug 2145764] Re: CVE-2026-33056: Vendored tar crate can chmod arbitrary directories by following symlinks

[Launchpad Bug Tracker]

** Merge proposal linked:
   https://code.launchpad.net/~petrakat/ubuntu/+source/rustc-1.81/+git/rustc-1.81/+merge/502566

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https://bugs.launchpad.net/bugs/2145764

Title:
  CVE-2026-33056: Vendored tar crate can chmod arbitrary directories by
  following symlinks

Status in asusctl package in Ubuntu:
  New
Status in cargo package in Ubuntu:
  New
Status in rust-astral-tokio-tar package in Ubuntu:
  New
Status in rust-async-tar package in Ubuntu:
  New
Status in rust-cargo-c package in Ubuntu:
  New
Status in rust-tar package in Ubuntu:
  New
Status in rustc package in Ubuntu:
  New
Status in rustc-1.62 package in Ubuntu:
  New
Status in rustc-1.74 package in Ubuntu:
  New
Status in rustc-1.76 package in Ubuntu:
  New
Status in rustc-1.77 package in Ubuntu:
  New
Status in rustc-1.78 package in Ubuntu:
  New
Status in rustc-1.79 package in Ubuntu:
  New
Status in rustc-1.80 package in Ubuntu:
  New
Status in rustc-1.81 package in Ubuntu:
  New
Status in rustc-1.82 package in Ubuntu:
  New
Status in rustc-1.83 package in Ubuntu:
  New
Status in rustc-1.84 package in Ubuntu:
  New
Status in rustc-1.85 package in Ubuntu:
  New
Status in rustc-1.88 package in Ubuntu:
  New
Status in rustc-1.89 package in Ubuntu:
  New
Status in rustc-1.90 package in Ubuntu:
  New
Status in rustc-1.91 package in Ubuntu:
  New
Status in rustc-1.92 package in Ubuntu:
  New
Status in rustc-1.93 package in Ubuntu:
  In Progress
Status in cargo source package in Jammy:
  New
Status in rust-tar source package in Jammy:
  New
Status in rustc source package in Jammy:
  New
Status in rustc-1.62 source package in Jammy:
  New
Status in rustc-1.76 source package in Jammy:
  New
Status in rustc-1.77 source package in Jammy:
  New
Status in rustc-1.78 source package in Jammy:
  New
Status in rustc-1.79 source package in Jammy:
  New
Status in rustc-1.80 source package in Jammy:
  New
Status in rustc-1.81 source package in Jammy:
  New
Status in rustc-1.82 source package in Jammy:
  New
Status in rustc-1.83 source package in Jammy:
  New
Status in rustc-1.84 source package in Jammy:
  New
Status in rustc-1.85 source package in Jammy:
  New
Status in rustc-1.89 source package in Jammy:
  New
Status in cargo source package in Noble:
  New
Status in rust-async-tar source package in Noble:
  New
Status in rust-cargo-c source package in Noble:
  New
Status in rust-tar source package in Noble:
  New
Status in rustc source package in Noble:
  New
Status in rustc-1.74 source package in Noble:
  New
Status in rustc-1.76 source package in Noble:
  New
Status in rustc-1.77 source package in Noble:
  New
Status in rustc-1.78 source package in Noble:
  New
Status in rustc-1.79 source package in Noble:
  New
Status in rustc-1.80 source package in Noble:
  New
Status in rustc-1.81 source package in Noble:
  New
Status in rustc-1.82 source package in Noble:
  New
Status in rustc-1.83 source package in Noble:
  New
Status in rustc-1.84 source package in Noble:
  New
Status in rustc-1.85 source package in Noble:
  New
Status in rustc-1.89 source package in Noble:
  New
Status in rustc-1.91 source package in Noble:
  New
Status in rust-async-tar source package in Questing:
  New
Status in rust-cargo-c source package in Questing:
  New
Status in rust-tar source package in Questing:
  New
Status in rustc-1.85 source package in Questing:
  New
Status in rustc-1.88 source package in Questing:
  New
Status in asusctl source package in Resolute:
  New
Status in rust-cargo-c source package in Resolute:
  New
Status in rust-tar source package in Resolute:
  New
Status in rustc-1.91 source package in Resolute:
  New
Status in rustc-1.92 source package in Resolute:
  New
Status in rustc-1.93 source package in Resolute:
  In Progress

Bug description:
  CVE record: https://www.cve.org/CVERecord?id=CVE-2026-33056

  Rust packages which vendor tar-rs 0.4.44 and below bundle in a
  vulnerability which allows malicious crates to change the
  permissions on arbitrary directories.

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