What’s Vulnerable › Vulnerabilities

CVE-2026-99067: btrfs: scrub: fix local_root reference leak in scrub_print_warning_inode()

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-23 · updated 2026-10-23

Description

In the Linux kernel, the following vulnerability has been resolved: btrfs: scrub: fix local_root reference leak in scrub_print_warning_inode() When paths_from_inode() fails, scrub_print_warning_inode() jumps to err without dropping the reference taken by btrfs_get_fs_root(), leaking a reference to the root every time path resolution fails while printing scrub warnings. Every other error and success path of the function drops the reference. Drop the reference on the paths_from_inode() failure path too.

Affected products

• Linux kernel: 3.2 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/12ba7d8b9cd45a2c6aa8f37c3f4b8a50422fb549
• https://git.kernel.org/stable/c/1fd742c7479961da6d0bb794ef8ac6b7b9442847
• https://git.kernel.org/stable/c/41cabfbf3532e2a2a17be9e4876042a5393b5c8d
• https://git.kernel.org/stable/c/452a435b74f7f598a343c51f7c89c5d2244384b6
• https://git.kernel.org/stable/c/a7e5992bc37088f9b00e531955022aef69de3dc7

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