CVE-2026-98960
Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: don't stash io_uring encoded data across -EAGAIN Returning -EAGAIN while leaving btrfs_uring_encoded_data in the cmd PDU leaks if the request is cancelled or the ring exits before reissue. io_uring does not free driver PDU allocations on cleanup. Write: io_queue_sqe() always issues with IO_URING_F_NONBLOCK first, so return -EAGAIN before allocating and free data on every exit. Read: free on nowait -EAGAIN too; only -EIOCBQUEUED keeps the allocation for btrfs_uring_read_finished().
How to fix
- Linux Linux4d9c1e0a7fb2cfb1cc924acafc194d2c15c3e83e, 51562a8cb11628d3a5e105b4c347ec5473e5745f or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 34310c442e175f286b4c06ab5caa4e0b267ea31c ≤ v < 4d9c1e0a7fb2cfb1cc924acafc194d2c15c3e83e, 34310c442e175f286b4c06ab5caa4e0b267ea31c ≤ v < 51562a8cb11628d3a5e105b4c347ec5473e5745f, 6.13 | 4d9c1e0a7fb2cfb1cc924acafc194d2c15c3e83e, 51562a8cb11628d3a5e105b4c347ec5473e5745f |
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