CVE-2026-98083High· 7.0▾ TwilightIn 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 transact…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 38.5 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 27.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
— → 7
none → high
0.1%
Last analysed / modified upstream
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.
linux_kernel >= 6.6.130, < 6.6.158linux_kernel >= 6.7, < 6.12.111linux_kernel >= 6.13, < 6.18.53linux_kernel >= 6.19, < 7.2.7linux_kernel = 7.3Upgrade past the affected range:
linux_kernel 7.2.7Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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