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CVE-2011-1585

Publication date 6 October 2011

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

The cifs_find_smb_ses function in fs/cifs/connect.c in the Linux kernel before 2.6.36 does not properly determine the associations between users and sessions, which allows local users to bypass CIFS share authentication by leveraging a mount of a share by a different user.

From the Ubuntu Security Team

It was discovered that CIFS incorrectly handled authentication. When a user had a CIFS share mounted that required authentication, a local user could mount the same share without knowing the correct password.

Status

Package Ubuntu Release Status
linux 12.04 LTS precise
Not affected
11.10 oneiric
Not affected
11.04 natty
Not affected
10.10 maverick
Fixed 2.6.35-31.62
10.04 LTS lucid
Fixed 2.6.32-34.73
8.04 LTS hardy
Fixed 2.6.24-30.96
linux-armadaxp 12.04 LTS precise
Not affected
11.10 oneiric Not in release
11.04 natty Not in release
10.04 LTS lucid Not in release
8.04 LTS hardy Not in release
linux-ec2 12.04 LTS precise Not in release
11.10 oneiric Not in release
11.04 natty Not in release
10.10 maverick Ignored
10.04 LTS lucid
Fixed 2.6.32-318.37
8.04 LTS hardy Not in release
linux-fsl-imx51 12.04 LTS precise Not in release
11.10 oneiric Not in release
11.04 natty Not in release
10.10 maverick Not in release
10.04 LTS lucid
Fixed 2.6.31-612.30
8.04 LTS hardy Not in release
linux-lts-backport-maverick 12.04 LTS precise Not in release
11.10 oneiric Not in release
11.04 natty Not in release
10.10 maverick Not in release
10.04 LTS lucid
Fixed 2.6.35-31.62~lucid1
8.04 LTS hardy Not in release
linux-lts-backport-natty 12.04 LTS precise Not in release
11.10 oneiric Not in release
11.04 natty Not in release
10.10 maverick Not in release
10.04 LTS lucid
Fixed 2.6.38-1.27~lucid1
8.04 LTS hardy Not in release
linux-lts-backport-oneiric 12.04 LTS precise Not in release
11.10 oneiric Not in release
11.04 natty Not in release
10.10 maverick Not in release
10.04 LTS lucid
Not affected
8.04 LTS hardy Not in release
linux-mvl-dove 12.04 LTS precise Not in release
11.10 oneiric Not in release
11.04 natty Not in release
10.10 maverick
Fixed 2.6.32-418.35
10.04 LTS lucid
Fixed 2.6.32-218.35
8.04 LTS hardy Not in release
linux-ti-omap4 12.04 LTS precise
Not affected
11.10 oneiric
Not affected
11.04 natty
Not affected
10.10 maverick
Fixed 2.6.35-903.27
10.04 LTS lucid Not in release
8.04 LTS hardy Not in release

Patch details

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

Package Patch details
linux

References

Related Ubuntu Security Notices (USN)

    • USN-1272-1
    • Linux kernel vulnerabilities
    • 21 November 2011
    • USN-1280-1
    • Linux (OMAP4) vulnerabilities
    • 24 November 2011
    • USN-1268-1
    • Linux kernel vulnerabilities
    • 21 November 2011
    • USN-1203-1
    • Linux kernel (Marvel DOVE) vulnerabilities
    • 13 September 2011
    • USN-1278-1
    • Linux (Maverick backport) vulnerabilities
    • 24 November 2011
    • USN-1218-1
    • Linux kernel vulnerabilities
    • 29 September 2011
    • USN-1208-1
    • Linux kernel (Marvel DOVE) vulnerabilities
    • 14 September 2011
    • USN-1256-1
    • Linux kernel (Natty backport) vulnerabilities
    • 9 November 2011
    • USN-1216-1
    • Linux kernel (EC2) vulnerabilities
    • 26 September 2011
    • USN-1271-1
    • Linux kernel (FSL-IMX51) vulnerabilities
    • 21 November 2011

Other references