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CVE-2026-98090

Unknown

Last modified

CVE-2026-98090 is a vulnerability of currently unknown severity. 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..

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 Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= b7cb29e666fe79dda5dbe5f57fb7c92413bf161c, < 2ee5c4bc11007c51f63f0c1be5d3f07f2b404ff7; >= b7cb29e666fe79dda5dbe5f57fb7c92413bf161c, < e127ac29a52134d0f4cba39d38e4b375deb3d1aa; >= b7cb29e666fe79dda5dbe5f57fb7c92413bf161c, < b79b4b29003690acfade8241998fc0104ef9c84c; >= b7cb29e666fe79dda5dbe5f57fb7c92413bf161c, < e0b54613aabeb8e9da597f23b90c6a03d0981986; a6e7e218a4d6488d56727a7d9aee1b7e78c0c485; >= 5.15.11, < 5.16
LinuxLinux5.16

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is 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 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.
How severe is CVE-2026-98090?
Severity scoring for CVE-2026-98090 is pending analysis.
How do I fix CVE-2026-98090?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST