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.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Linux_kernel | Linux | * | 2.6.35 (excluding) |
| Linux | Ubuntu | devel | * |
| Linux | Ubuntu | jaunty | * |
| Linux | Ubuntu | karmic | * |
| Linux | Ubuntu | lucid | * |
| Linux | Ubuntu | maverick | * |
| Linux | Ubuntu | upstream | * |
| Linux-ec2 | Ubuntu | lucid | * |
| Linux-ec2 | Ubuntu | maverick | * |
| Linux-ec2 | Ubuntu | upstream | * |
| Linux-lts-backport-maverick | Ubuntu | lucid | * |
| Linux-lts-backport-maverick | Ubuntu | upstream | * |
| Linux-source-2.6.15 | Ubuntu | upstream | * |
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=2ebc3464781ad24474abcbd2274e6254689853b5
- http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00004.html
- http://secunia.com/advisories/42758
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.35
- http://www.openwall.com/lists/oss-security/2010/07/21/10
- http://www.openwall.com/lists/oss-security/2010/07/21/4
- http://www.securityfocus.com/bid/41847
- http://www.ubuntu.com/usn/USN-1041-1
- http://www.vupen.com/english/advisories/2011/0070
- https://bugzilla.redhat.com/show_bug.cgi?id=616998
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=2ebc3464781ad24474abcbd2274e6254689853b5
- http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00004.html
- http://secunia.com/advisories/42758
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.35
- http://www.openwall.com/lists/oss-security/2010/07/21/10
- http://www.openwall.com/lists/oss-security/2010/07/21/4
- http://www.securityfocus.com/bid/41847
- http://www.ubuntu.com/usn/USN-1041-1
- http://www.vupen.com/english/advisories/2011/0070
- https://bugzilla.redhat.com/show_bug.cgi?id=616998