CVE-2010-4805

The socket implementation in net/core/sock.c in the Linux kernel before 2.6.35 does not properly manage a backlog of received packets, which allows remote attackers to cause a denial of service by sending a large amount of network traffic, related to the sk_add_backlog function and the sk_rmem_alloc socket field. NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-4251.

From the Ubuntu Security Team

Alex Shi and Eric Dumazet discovered that the network stack did not correctly handle packet backlogs. A remote attacker could exploit this by sending a large amount of network traffic to cause the system to run out of memory, leading to a denial of service.

Status

Show unmaintained releases

No maintained releases are affected by this CVE.

Package	Ubuntu Release	Status
linux	13.04 raring	Not affected
	12.10 quantal	Not affected
	12.04 LTS precise	Not affected
	11.10 oneiric	Not affected
	11.04 natty	Not affected
	10.10 maverick	Not affected
	10.04 LTS lucid	Fixed 2.6.32-34.73
	8.04 LTS hardy	Ignored end of life, was deferred
	6.06 LTS dapper	Not in release
linux-armadaxp	13.04 raring	Not in release
	12.10 quantal	Not affected
	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	13.04 raring	Not in release
	12.10 quantal	Not in release
	12.04 LTS precise	Not in release
	11.10 oneiric	Not in release
	11.04 natty	Not in release
	10.10 maverick	Ignored end of life
	10.04 LTS lucid	Fixed 2.6.32-318.37
	8.04 LTS hardy	Not in release
	6.06 LTS dapper	Not in release
linux-fsl-imx51	13.04 raring	Not in release
	12.10 quantal	Not in release
	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 2.6.31-610.27
	8.04 LTS hardy	Not in release
	6.06 LTS dapper	Not in release
linux-lts-backport-maverick	13.04 raring	Not in release
	12.10 quantal	Not in release
	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
	6.06 LTS dapper	Not in release
linux-lts-backport-natty	13.04 raring	Not in release
	12.10 quantal	Not in release
	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-lts-backport-oneiric	13.04 raring	Not in release
	12.10 quantal	Not in release
	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-lts-quantal	13.04 raring	Not in release
	12.10 quantal	Not in release
	12.04 LTS precise	Not affected
	11.10 oneiric	Not in release
	10.04 LTS lucid	Not in release
	8.04 LTS hardy	Not in release
linux-lts-raring	13.04 raring	Not in release
	12.10 quantal	Not in release
	12.04 LTS precise	Not affected
	11.10 oneiric	Not in release
	10.04 LTS lucid	Not in release
	8.04 LTS hardy	Not in release
linux-mvl-dove	13.04 raring	Not in release
	12.10 quantal	Not in release
	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
	6.06 LTS dapper	Not in release
linux-source-2.6.15	13.04 raring	Not in release
	12.10 quantal	Not in release
	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 in release
	8.04 LTS hardy	Not in release
	6.06 LTS dapper	Ignored end of life
linux-ti-omap4	13.04 raring	Not affected
	12.10 quantal	Not affected
	12.04 LTS precise	Not affected
	11.10 oneiric	Not affected
	11.04 natty	Not affected
	10.10 maverick	Not affected
	10.04 LTS lucid	Not in release
	8.04 LTS hardy	Not in release
	6.06 LTS dapper	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	Upstream: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=c377411f2494a931ff7facdbb3a6839b1266bcf6

Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-1203-1
Linux kernel (Marvel DOVE) vulnerabilities
13 September 2011

USN-1218-1
Linux kernel vulnerabilities
29 September 2011

USN-1204-1
Linux kernel (i.MX51) vulnerabilities
13 September 2011

USN-1208-1
Linux kernel (Marvel DOVE) vulnerabilities
14 September 2011

USN-1216-1
Linux kernel (EC2) vulnerabilities
26 September 2011

Other references

https://www.cve.org/CVERecord?id=CVE-2010-4805