CVE-2011-1093

Publication date 18 July 2011

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

The dccp_rcv_state_process function in net/dccp/input.c in the Datagram Congestion Control Protocol (DCCP) implementation in the Linux kernel before 2.6.38 does not properly handle packets for a CLOSED endpoint, which allows remote attackers to cause a denial of service (NULL pointer dereference and OOPS) by sending a DCCP-Close packet followed by a DCCP-Reset packet.

From the Ubuntu Security Team

Johan Hovold discovered that the DCCP network stack did not correctly handle certain packet combinations. A remote attacker could send specially crafted network traffic that would crash the system, leading to a denial of service.

Read the notes from the security team

Status

No maintained releases are affected by this CVE.

Package Ubuntu Release Status
linux 11.10 oneiric
Not affected
11.04 natty
Fixed 2.6.38-6.33
10.10 maverick
Fixed 2.6.35-29.51
10.04 LTS lucid
Fixed 2.6.32-31.60
8.04 LTS hardy
Fixed 2.6.24-29.93
linux-ec2 11.10 oneiric Not in release
11.04 natty Not in release
10.10 maverick Ignored end of life
10.04 LTS lucid
Fixed 2.6.32-315.28
8.04 LTS hardy Not in release
linux-fsl-imx51 11.10 oneiric Not in release
11.04 natty Not in release
10.10 maverick Not in release
10.04 LTS lucid
Fixed 2.6.31-610.27
8.04 LTS hardy Not in release
linux-lts-backport-maverick 11.10 oneiric Not in release
11.04 natty Not in release
10.10 maverick Not in release
10.04 LTS lucid
Fixed 2.6.35-30.54~lucid1
8.04 LTS hardy Not in release
linux-lts-backport-natty 11.10 oneiric Not in release
11.04 natty Not in release
10.10 maverick Not in release
10.04 LTS lucid
Fixed 2.6.38-7.35~lucid1
8.04 LTS hardy Not in release
linux-lts-backport-oneiric 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 11.10 oneiric Not in release
11.04 natty Not in release
10.10 maverick
Fixed 2.6.32-416.33
10.04 LTS lucid
Fixed 2.6.32-216.33
8.04 LTS hardy Not in release
linux-ti-omap4 11.10 oneiric
Not affected
11.04 natty
Fixed 2.6.38-1205.6
10.10 maverick
Fixed 2.6.35-903.23
10.04 LTS lucid Not in release
8.04 LTS hardy Not in release

Notes

kees

May have been introduced as late as 0c10c5d. Was possibly fixed briefly by ddab055, but re-introduced by 410e27a.

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-1189-1
    • Linux kernel vulnerabilities
    • 19 August 2011
    • USN-1202-1
    • Linux kernel (OMAP4) vulnerabilities
    • 13 September 2011
    • USN-1160-1
    • Linux kernel vulnerabilities
    • 28 June 2011
    • USN-1141-1
    • Linux kernel vulnerabilities
    • 1 June 2011
    • USN-1204-1
    • Linux kernel (i.MX51) vulnerabilities
    • 13 September 2011
    • USN-1167-1
    • Linux kernel vulnerabilities
    • 13 July 2011
    • USN-1256-1
    • Linux kernel (Natty backport) vulnerabilities
    • 9 November 2011
    • USN-1187-1
    • Linux kernel (Maverick backport) vulnerabilities
    • 9 August 2011
    • USN-1093-1
    • Linux Kernel vulnerabilities (Marvell Dove)
    • 25 March 2011

Other references