CVE-2010-1636
Published Jun 7, 2010 · Updated Nov 3, 2026
Original summary
Normalized public record · Updated Nov 3, 2026
The btrfs_ioctl_clone function in fs/btrfs/ioctl.c in the btrfs functionality in the Linux kernel 2.6.29 through 2.6.32, and possibly other versions, does not ensure that a cloned file descriptor has been opened for reading, which allows local users to read sensitive information from a write-only file descriptor.
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
The btrfs_ioctl_clone function in fs/btrfs/ioctl.c in the btrfs functionality in the Linux kernel 2.6.29 through 2.6.32, and possibly other versions, does not ensure that a cloned file descriptor has been opened for reading, which allows local users to read sensitive information from a write-only file descriptor.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- LOW
- Confidence
- Not available
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
- bugs.launchpad.net ↗
- [oss-security] 20100518 Re: kernel: btrfs: check for read permission on src file in the clone ioctl ↗
- [oss-security] 20100518 kernel: btrfs: check for read permission on src file in the clone ioctl ↗
- [oss-security] 20100525 Re: kernel: btrfs: check for read permission on src file in the clone ioctl ↗
- bugzilla.redhat.com ↗
- git.kernel.org ↗
Record history
Published Jun 7, 2010 · Last refreshed Nov 3, 2026