#VU45286 Information disclosure in Linux kernel - CVE-2011-0711

Vulnerability identifier: #VU45286

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2011-0711

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

The xfs_fs_geometry function in fs/xfs/xfs_fsops.c in the Linux kernel before 2.6.38-rc6-git3 does not initialize a certain structure member, which allows local users to obtain potentially sensitive information from kernel stack memory via an FSGEOMETRY_V1 ioctl call.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 2.6.0 - 2.6.37.6

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External links
https://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3a3675b7f23f83ca8c67c9c2b6edf707fd28d1ba
https://openwall.com/lists/oss-security/2011/02/16/10
https://openwall.com/lists/oss-security/2011/02/16/4
https://osvdb.org/70950
https://rhn.redhat.com/errata/RHSA-2011-0927.html
https://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.38-rc6-git3.log
https://www.securityfocus.com/bid/46417
https://bugzilla.redhat.com/show_bug.cgi?id=677260
https://patchwork.kernel.org/patch/555461/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.