In the Linux kernel, the following vulnerability has been resolved:
btrfs: fix transaction use-after-free in raid stripe insertion
If allocation of a RAID stripe extent fails, btrfs_insert_one_raid_extent() aborts and ends the transaction before returning -ENOMEM.
btrfs_finish_one_ordered(), the production caller through btrfs_insert_raid_extent(), still owns the transaction handle. It handles the error by aborting the transaction and then reaches the common exit path, which ends the transaction again.
The premature end can free the handle and drop its transaction reference. Transaction cleanup can then free the transaction before the caller's second abort accesses the handle and transaction, resulting in use-after-free.
Keep the abort at the failure site, but let the caller's common exit path end the transaction once, after it has finished using both objects.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel6.12-toolsUpgrade kernel6.12-debuginfoUpgrade perf6.12-debuginfoUpgrade kernel-livepatch-6.12.111-136.204Upgrade kernel6.12-tools-debuginfoUpgrade python3-perf6.12-debuginfoUpgrade bpftool6.12Upgrade python3-perf6.12Upgrade kernel6.12-headersUpgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel6.12-modules-extraUpgrade bpftool6.12-debuginfoUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.12-develUpgrade perf6.12Upgrade kernel6.12-modules-extra-commonUpgrade kernel6.12Upgrade kernel6.12-tools-devel | Oct 13, 2026 | Sep 25, 2026 |
| Debian | — | Upgrade linux-6.12Upgrade linux | Sep 30, 2026 | Sep 25, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 13, 2026 | Sep 25, 2026 |
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