CVE-2026-98090

btrfs: restore active device pointers after failed sprout

State: Published
Severity: Not scored
Published: Sep 25, 2026
Updated: Oct 19, 2026
Reserved: Sep 25, 2026

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	a6e7e218a4d6488d56727a7d9aee1b7e78c0c485 to before 46863a9f93186e620c70584f91c8d5d95da83effAffected b7cb29e666fe79dda5dbe5f57fb7c92413bf161c to before 49179f13c04735c55fd0f43b03696c015b067137Affected b7cb29e666fe79dda5dbe5f57fb7c92413bf161c to before 0a0ee38ad6324ac1603079bb785f784191576bd5Affected b7cb29e666fe79dda5dbe5f57fb7c92413bf161c to before 2ee5c4bc11007c51f63f0c1be5d3f07f2b404ff7Affected b7cb29e666fe79dda5dbe5f57fb7c92413bf161c to before e127ac29a52134d0f4cba39d38e4b375deb3d1aaAffected b7cb29e666fe79dda5dbe5f57fb7c92413bf161c to before b79b4b29003690acfade8241998fc0104ef9c84cAffected b7cb29e666fe79dda5dbe5f57fb7c92413bf161c to before e0b54613aabeb8e9da597f23b90c6a03d0981986Affected 5.15.11 to before 5.15.222Affected
LinuxLinux	5.16Affected before 5.16Not affected 5.15.222 through 5.15.Not affected 6.1.189 through 6.1.Not affected 6.6.158 through 6.6.Not affected 6.12.111 through 6.12.Not affected 6.18.53 through 6.18.Not affected 7.2.7 through 7.2.Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

a6e7e218a4d6488d56727a7d9aee1b7e78c0c485 to before 46863a9f93186e620c70584f91c8d5d95da83effAffected
b7cb29e666fe79dda5dbe5f57fb7c92413bf161c to before 49179f13c04735c55fd0f43b03696c015b067137Affected
b7cb29e666fe79dda5dbe5f57fb7c92413bf161c to before 0a0ee38ad6324ac1603079bb785f784191576bd5Affected
b7cb29e666fe79dda5dbe5f57fb7c92413bf161c to before 2ee5c4bc11007c51f63f0c1be5d3f07f2b404ff7Affected
b7cb29e666fe79dda5dbe5f57fb7c92413bf161c to before e127ac29a52134d0f4cba39d38e4b375deb3d1aaAffected
b7cb29e666fe79dda5dbe5f57fb7c92413bf161c to before b79b4b29003690acfade8241998fc0104ef9c84cAffected
b7cb29e666fe79dda5dbe5f57fb7c92413bf161c to before e0b54613aabeb8e9da597f23b90c6a03d0981986Affected
5.15.11 to before 5.15.222Affected

LinuxLinux

5.16Affected
before 5.16Not affected
5.15.222 through 5.15.*Not affected
6.1.189 through 6.1.*Not affected
6.6.158 through 6.6.*Not affected
6.12.111 through 6.12.*Not affected
6.18.53 through 6.18.*Not affected
7.2.7 through 7.2.*Not affected
7.3 and laterNot affected

References

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