CVE-2010-2537

Publication date 30 September 2010

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.1 · High

Score breakdown

The btrfs_ioctl_clone function in fs/btrfs/ioctl.c in the Linux kernel before 2.6.35 allows local users to overwrite an append-only file via a (1) BTRFS_IOC_CLONE or (2) BTRFS_IOC_CLONE_RANGE ioctl call that specifies this file as a donor.

From the Ubuntu Security Team

Dan Rosenberg discovered that the btrfs filesystem did not correctly validate permissions when using the clone function. A local attacker could overwrite the contents of file handles that were opened for append-only, or potentially read arbitrary contents, leading to a loss of privacy.

Status

Package Ubuntu Release Status
linux 10.10 maverick
Fixed 2.6.35-14.19
10.04 LTS lucid
Fixed 2.6.32-25.43
9.10 karmic
Fixed 2.6.31-22.70
9.04 jaunty Ignored end of life
8.04 LTS hardy
Not affected
6.06 LTS dapper Not in release
linux-ec2 11.04 natty Not in release
10.10 maverick Ignored end of life
10.04 LTS lucid
Fixed 2.6.32-311.23
8.04 LTS hardy Not in release
6.06 LTS dapper Not in release
linux-lts-backport-maverick 10.10 maverick Not in release
10.04 LTS lucid
Fixed 2.6.35-25.44~lucid1
9.10 karmic Not in release
8.04 LTS hardy Not in release
6.06 LTS dapper Not in release
linux-source-2.6.15 10.10 maverick Not in release
10.04 LTS lucid Not in release
9.10 karmic Not in release
9.04 jaunty Not in release
8.04 LTS hardy Not in release
6.06 LTS dapper
Not affected

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
linux

Severity score breakdown

Parameter Value
Base score 7.1 · High
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-1083-1
    • Linux kernel vulnerabilities
    • 3 March 2011
    • USN-1041-1
    • Linux kernel vulnerabilities
    • 10 January 2011

Other references