CVE-2026-68422

btrfs: fix root leak if its reloc root is unexpected in merge_reloc_roots()

N/A

Published: August 10, 2026 at 12:04 PM UTC

Updated: August 19, 2026 at 05:20 PM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

N/A

Exploit prediction

EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix root leak if its reloc root is unexpected in merge_reloc_roots() If we have an unexpected reloc_root for our root, we jump to the out label but never drop the reference we obtained for root, resulting in a leak. Add a missing btrfs_put_root() call.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

5.13 ≤ v < 5.15.2165.13 ≤ v < 6.1.1835.13 ≤ v < 6.12.1015.13 ≤ v < 6.18.425.13 ≤ v < 6.6.1485.13 ≤ v < 7.1.65.13 ≤ v < 7.224213fa46c7080c31d79aa2e3e2f0d9480cab7005.13

Vendor states this is fixed in 3f586b4c92e4272fcd01bf0db0590b63acf3e85b (fixed)

Vendor states this is fixed in 60a23d4ea169e27403f3bb023bb98036797c0206 (fixed)

Vendor states this is fixed in 72f673d1c1deb819554d3e7e154f6d84301eb735 (fixed)

Vendor states this is fixed in 7591d1727067d6063247901ad25c4bdc4e5695c4 (fixed)

Vendor states this is fixed in b3d39b03799600c76c33486e2d29b73a771023db (fixed)

Vendor states this is fixed in ce6050bafb4e33377dc17fcc357736bfc351180c (fixed)

Vendor states this is fixed in f89df93e8aefa4c1c813f835559f2ac727f79766 (fixed)

Vendor states this is fixed in 5.13 (unaffected)

Vendor states this is fixed in 5.15.216 (unaffected)

Vendor states this is fixed in 6.1.183 (unaffected)

Vendor states this is fixed in 6.12.101 (unaffected)

Vendor states this is fixed in 6.18.42 (unaffected)