CVE-2010-2537
Published: 30 September 2010
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.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
linux Launchpad, Ubuntu, Debian |
dapper |
Does not exist
|
| hardy |
Not vulnerable
|
|
| jaunty |
Ignored
(reached end-of-life)
|
|
| karmic |
Released
(2.6.31-22.70)
|
|
| lucid |
Released
(2.6.32-25.43)
|
|
| maverick |
Released
(2.6.35-14.19)
|
|
| upstream |
Released
(2.6.35~rc6)
|
|
|
Patches: upstream: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=2ebc3464781ad24474abcbd2274e6254689853b5 |
||
|
linux-ec2 Launchpad, Ubuntu, Debian |
dapper |
Does not exist
|
| hardy |
Does not exist
|
|
| lucid |
Released
(2.6.32-311.23)
|
|
| maverick |
Ignored
(binary supplied by "linux" now)
|
|
| natty |
Does not exist
|
|
| upstream |
Released
(2.6.35~rc6)
|
|
|
linux-lts-backport-maverick Launchpad, Ubuntu, Debian |
dapper |
Does not exist
|
| hardy |
Does not exist
|
|
| karmic |
Does not exist
|
|
| lucid |
Released
(2.6.35-25.44~lucid1)
|
|
| maverick |
Does not exist
|
|
| upstream |
Released
(2.6.35~rc6)
|
|
|
linux-source-2.6.15 Launchpad, Ubuntu, Debian |
dapper |
Not vulnerable
|
| hardy |
Does not exist
|
|
| jaunty |
Does not exist
|
|
| karmic |
Does not exist
|
|
| lucid |
Does not exist
|
|
| maverick |
Does not exist
|
|
| upstream |
Released
(2.6.35~rc6)
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.1 |
| 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 |