CVE-2026-98091

Summary

In the Linux kernel, the following vulnerability has been resolved:

btrfs: detach failed sprout device from transaction update list

When creating the first metadata chunk for a sprout filesystem, create_chunk() adds the new device to the transaction dev_update_list through device->post_commit_list.

If the subsequent system chunk creation fails, btrfs_init_new_device() aborts the transaction and releases the device while post_commit_list is still linked. This triggers a warning in btrfs_free_device() and leaves the transaction list referencing freed memory.

Detach the device while holding chunk_mutex before releasing it.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxbbbf7243d62d8be73b7ef60721c127b36b2d523e < 2a57fb1d5ce8f316b81bbb60e6df245ebc816ffcaffected
LinuxLinuxbbbf7243d62d8be73b7ef60721c127b36b2d523e < 86eff3052054e8f3b059b2d5845b6dcca021f20caffected
LinuxLinuxbbbf7243d62d8be73b7ef60721c127b36b2d523e < 63bfa52eb3289517aa82cb90e1189385873aae21affected
LinuxLinuxbbbf7243d62d8be73b7ef60721c127b36b2d523e < 7fe9dfbca43464baa8f050447a4837587b18adecaffected
LinuxLinuxbbbf7243d62d8be73b7ef60721c127b36b2d523e < e9e7e37afa85db770e6084360b21a21a8b3a583faffected
LinuxLinuxbbbf7243d62d8be73b7ef60721c127b36b2d523e < 8b001df2b37ca022f710f3254fbb0bcd6d9e1bedaffected
LinuxLinuxbbbf7243d62d8be73b7ef60721c127b36b2d523e < 0ea6814bc0ff7cff443241bd34db9f0f828f3190affected
LinuxLinuxbbbf7243d62d8be73b7ef60721c127b36b2d523e < c93b3c43df561cd9f592cee20ae058b563f9e5b6affected
LinuxLinux5.2affected
LinuxLinux0 < 5.2unaffected
LinuxLinux5.10.271 <= 5.10.*unaffected
LinuxLinux5.15.222 <= 5.15.*unaffected
LinuxLinux6.1.189 <= 6.1.*unaffected
LinuxLinux6.6.158 <= 6.6.*unaffected
LinuxLinux6.12.111 <= 6.12.*unaffected
LinuxLinux6.18.53 <= 6.18.*unaffected
LinuxLinux7.2.7 <= 7.2.*unaffected
LinuxLinux7.3-rc2 <= *unaffected

Weaknesses

References