UNKNOWN NVD
CVE-2026-98090
In the Linux kernel, the following vulnerability has been resolved: btrfs: restore active device pointers after failed sprout btrfs_init_new_device() switches
In the Linux kernel, the following vulnerability has been resolved:
btrfs: restore active device pointers after failed sprout
btrfs_init_new_device() switches latest_dev and possibly s_bdev from the
seed device to the new sprout device before creating the first writable
chunks.
If chunk creation or the subsequent sprout setup fails, the error path
releases the new device without switching those pointers back.
btrfs_show_devname() can then dereference the freed latest_dev and crash.
Restore the active device pointers to the latest seed device before
removing and releasing the failed sprout device.
References
- https://git.kernel.org/stable/c/2ee5c4bc11007c51f63f0c1be5d3f07f2b404ff7
- https://git.kernel.org/stable/c/b79b4b29003690acfade8241998fc0104ef9c84c
- https://git.kernel.org/stable/c/e0b54613aabeb8e9da597f23b90c6a03d0981986
- https://git.kernel.org/stable/c/e127ac29a52134d0f4cba39d38e4b375deb3d1aa
This unknown severity vulnerability was published on 2026-09-25 via NVD.
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