btrfs: qgroup: fix quota root leak after quota disable failure
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 1 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-401.
Summary
In the Linux kernel, the following vulnerability has been resolved: btrfs: qgroup: fix quota root leak after quota disable failure If during the quota disable we fail when cleaning the quota tree or when deleting the root from the root tree, we jump to the 'out' label without ever dropping the reference on the quota root, resulting in a leak of the root since fs_info->quota_root is no longer pointing to the root (we have set it to NULL just before those steps). Fix this by always doing a btrfs_put_root() call under the 'out' label. This is a problem that exists since qgroups were first added in 2012 by commit bed92eae26cc ("Btrfs: qgroup implementation and prototypes"), but back then we missed a kfree on the quota root and free_extent_buffer() calls on its root and commit root nodes, since back then roots were not yet reference counted.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 3.6 and later | 5.10.223, 5.15.164, 6.1.101, 6.6.42, 6.9.11, 6.10 | Patch available | CNA |
- Linux VendorLinux Affected 3.6 and later Fixed in 5.10.223, 5.15.164, 6.1.101, 6.6.42, 6.9.11, 6.10 Patch available CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | before 5.10.223; 5.11 to before 5.15.164; 5.16 to before 6.1.101; 6.2 to before 6.6.42; 6.7 to before 6.9.11 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:* | 6.10 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:* | 6.10 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.10:rc3:*:*:*:*:*:* | 6.10 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.10:rc4:*:*:*:*:*:* | 6.10 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.10:rc5:*:*:*:*:*:* | 6.10 rc5 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 5.10.223; 5.11 to before 5.15.164; 5.16 to before 6.1.101; 6.2 to before 6.6.42; 6.7 to before 6.9.11 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:* Versions 6.10 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:* Versions 6.10 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.10:rc3:*:*:*:*:*:* Versions 6.10 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.10:rc4:*:*:*:*:*:* Versions 6.10 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.10:rc5:*:*:*:*:*:* Versions 6.10 rc5 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.223, 5.15.164, 6.1.101, 6.6.42, 6.9.11, 6.10
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2024-41078
- 2026-10-03 Alias added: GHSA-pw84-w4v5-39jj
References
Patch 6
- https://git.kernel.org/stable/c/94818bdb00ef34a996a06aa63d11f591074cb757
- https://git.kernel.org/stable/c/8a69529f22590b67bb018de9acbcf94abc8603cf
- https://git.kernel.org/stable/c/5ef3961682e5310f2221bae99bcf9f5d0f4b0d51
- https://git.kernel.org/stable/c/f88aeff5a173e8ba3133314eb4b964236ef3589d
- https://git.kernel.org/stable/c/7dd6a5b96157a21245566b21fd58276a214357ff
- https://git.kernel.org/stable/c/a7e4c6a3031c74078dba7fa36239d0f4fe476c53
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Sources
- CVE-2024-41078 · CVE Program
- CVE-2024-41078 · NVD
- FIRST EPSS
- GHSA-pw84-w4v5-39jj · GitHub Advisory Database · CC BY 4.0
- CVE-2024-41078 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences