Description
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.
Affected products
linux: linux kernel
References7
- git.kernel.org/stable/c/0a0ee38ad6324ac1603079bb785f784191576bd5 Patch
- git.kernel.org/stable/c/2ee5c4bc11007c51f63f0c1be5d3f07f2b404ff7 Patch
- git.kernel.org/stable/c/46863a9f93186e620c70584f91c8d5d95da83eff Patch
- git.kernel.org/stable/c/49179f13c04735c55fd0f43b03696c015b067137 Patch
- git.kernel.org/stable/c/b79b4b29003690acfade8241998fc0104ef9c84c Patch
- git.kernel.org/stable/c/e0b54613aabeb8e9da597f23b90c6a03d0981986 Patch
- git.kernel.org/stable/c/e127ac29a52134d0f4cba39d38e4b375deb3d1aa Patch
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 2 · as of 9 November 2026
- CWE
- CWE-416
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