PT-2010-4090 · Linux · Linux Kernel

Dan Rosenberg · Published 2010-09-30 · Updated 2023-02-13 · CVE-2010-2537

Positive Technologies (AI Summary)

CVSS v2.0

6.6

Medium

Base vector

AV:L/AC:L/Au:N/C:N/I:C/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 2.6.35

Description The issue allows local users to overwrite an append-only file. This can be achieved via a BTRFS IOC CLONE or BTRFS IOC CLONE RANGE ioctl call that specifies the append-only file as a donor.

Recommendations For versions prior to 2.6.35, update to version 2.6.35 or later to resolve the issue. As a temporary workaround, consider restricting access to the btrfs ioctl clone function in fs/btrfs/ioctl.c to minimize the risk of exploitation. Avoid using the BTRFS IOC CLONE or BTRFS IOC CLONE RANGE ioctl calls with append-only files until the issue is resolved.

Fix

Related Identifiers

CVE-2010-2537

Affected Products

Linux Kernel

References · 11

• https://bugzilla.redhat.com/show_bug.cgi?id=616998 · Patch
• http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00004.html · Vendor Advisory
• http://openwall.com/lists/oss-security/2010/07/21/10 · Patch
• http://openwall.com/lists/oss-security/2010/07/21/4 · Patch
• http://ubuntu.com/usn/USN-1041-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2010-2537 · Security Note
• http://securityfocus.com/bid/41847 · Note
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=2ebc3464781ad24474abcbd2274e6254689853b5 · Note
• http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.35 · Note
• http://vupen.com/english/advisories/2011/0070 · Note
• http://secunia.com/advisories/42758 · Note