The Btrfs implementation in the Linux kernel before 3.19 does not ensure that the visible xattr state is consistent with a requested replacement, which allows local users to bypass intended ACL settings and gain privileges via standard filesystem operations (1) during an xattr-replacement time window, related to a race condition, or (2) after an xattr-replacement attempt that fails because the data does not fit.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 30, 2024 | May 27, 2015 |
| Oracle_linux | — | Upgrade kernel-uek-docUpgrade kernel-uek-debug-develUpgrade kernel-uek-develUpgrade kernel-uek-debugUpgrade kernel-uekUpgrade kernel-uek-firmware | Jul 1, 2017 | May 27, 2015 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Nov 7, 2014 |
| Suse | — | Upgrade kernel-default | Jun 18, 2019 | May 27, 2015 |
| Ubuntu | — | Upgrade linux-image-3.13.0-57-powerpc-e500mcUpgrade linux-image-3.16.0-38-powerpc64-smpUpgrade linux-image-3.16.0-38-genericUpgrade linux-image-3.13.0-57-generic-lpaeUpgrade linux-image-3.13.0-57-powerpc-e500Upgrade linux-image-3.13.0-57-genericUpgrade linux-image-3.16.0-38-powerpc-smpUpgrade linux-image-3.13.0-57-powerpc64-smpUpgrade linux-image-3.16.0-38-lowlatencyUpgrade linux-image-3.13.0-57-powerpc64-embUpgrade linux-image-3.16.0-38-powerpc-e500mcUpgrade linux-image-3.13.0-57-powerpc-smpUpgrade linux-image-3.16.0-38-generic-lpaeUpgrade linux-image-3.16.0-38-powerpc64-embUpgrade linux-image-3.13.0-57-lowlatency | Nov 8, 2024 | May 27, 2015 |
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