CVE-2015-1465

The IPv4 implementation in the Linux kernel before 3.18.8 does not properly consider the length of the Read-Copy Update (RCU) grace period for redirecting lookups in the absence of caching, which allows remote attackers to cause a denial of service (memory consumption or system crash) via a flood of packets.

From the Ubuntu Security Team

Marcelo Leitner discovered a flaw in the Linux kernel's routing of packets to too many different dsts/too fast. A remote attacker on the same subnet can exploit this flaw to cause a denial of service (system crash).

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
linux	15.10 wily	Not affected
	15.04 vivid	Not affected
	14.10 utopic	Fixed 3.16.0-33.44
	14.04 LTS trusty	Fixed 3.13.0-49.81
	12.04 LTS precise	Not affected
	10.04 LTS lucid	Not affected
linux-armadaxp	15.10 wily	Not in release
	15.04 vivid	Not in release
	14.10 utopic	Not in release
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not affected
	10.04 LTS lucid	Not in release
linux-ec2	15.10 wily	Not in release
	15.04 vivid	Not in release
	14.10 utopic	Not in release
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not in release
	10.04 LTS lucid	Not affected
linux-flo	15.10 wily	Not affected
	15.04 vivid	Not affected
	14.10 utopic	Not affected
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not in release
	10.04 LTS lucid	Not in release
linux-fsl-imx51	15.10 wily	Not in release
	15.04 vivid	Not in release
	14.10 utopic	Not in release
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not in release
	10.04 LTS lucid	Ignored end of life
linux-goldfish	15.10 wily	Not affected
	15.04 vivid	Not affected
	14.10 utopic	Not affected
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not in release
	10.04 LTS lucid	Not in release
linux-grouper	15.10 wily	Not in release
	15.04 vivid	Not in release
	14.10 utopic	Ignored end of life
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not in release
	10.04 LTS lucid	Not in release
linux-linaro-omap	15.10 wily	Not in release
	15.04 vivid	Not in release
	14.10 utopic	Not in release
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Ignored end of life
	10.04 LTS lucid	Not in release
linux-linaro-shared	15.10 wily	Not in release
	15.04 vivid	Not in release
	14.10 utopic	Not in release
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Ignored end of life
	10.04 LTS lucid	Not in release
linux-linaro-vexpress	15.10 wily	Not in release
	15.04 vivid	Not in release
	14.10 utopic	Not in release
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Ignored end of life
	10.04 LTS lucid	Not in release
linux-lts-quantal	15.10 wily	Not in release
	15.04 vivid	Not in release
	14.10 utopic	Not in release
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Ignored end of life, was pending
	10.04 LTS lucid	Not in release
linux-lts-raring	15.10 wily	Not in release
	15.04 vivid	Not in release
	14.10 utopic	Not in release
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Ignored end of life, was needs-triage
	10.04 LTS lucid	Not in release
linux-lts-saucy	15.10 wily	Not in release
	15.04 vivid	Not in release
	14.10 utopic	Not in release
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Ignored end of life, was pending
	10.04 LTS lucid	Not in release
linux-lts-trusty	15.10 wily	Not in release
	15.04 vivid	Not in release
	14.10 utopic	Not in release
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Fixed 3.13.0-49.81~precise1
	10.04 LTS lucid	Not in release
linux-lts-utopic	15.10 wily	Not in release
	15.04 vivid	Not in release
	14.10 utopic	Not in release
	14.04 LTS trusty	Fixed 3.16.0-33.44~14.04.1
	12.04 LTS precise	Not in release
	10.04 LTS lucid	Not in release
linux-lts-vivid	15.10 wily	Not in release
	15.04 vivid	Not in release
	14.10 utopic	Not in release
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not in release
	10.04 LTS lucid	Not in release
linux-maguro	15.10 wily	Not in release
	15.04 vivid	Not in release
	14.10 utopic	Not in release
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not in release
	10.04 LTS lucid	Not in release
linux-mako	15.10 wily	Not affected
	15.04 vivid	Not affected
	14.10 utopic	Not affected
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not in release
	10.04 LTS lucid	Not in release
linux-manta	15.10 wily	Not affected
	15.04 vivid	Not affected
	14.10 utopic	Not affected
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not in release
	10.04 LTS lucid	Not in release
linux-mvl-dove	15.10 wily	Not in release
	15.04 vivid	Not in release
	14.10 utopic	Not in release
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not in release
	10.04 LTS lucid	Ignored end of life
linux-qcm-msm	15.10 wily	Not in release
	15.04 vivid	Not in release
	14.10 utopic	Not in release
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Ignored end of life
	10.04 LTS lucid	Ignored end of life
linux-raspi2	15.10 wily	Not affected
	15.04 vivid	Not in release
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not in release
linux-ti-omap4	15.10 wily	Not in release
	15.04 vivid	Not in release
	14.10 utopic	Not in release
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not affected
	10.04 LTS lucid	Not in release

Notes

jdstrand

android kernels (flo, goldfish, grouper, maguro, mako and manta) are not supported on the Ubuntu Touch 14.04 preview kernels linux-lts-saucy no longer receives official support linux-lts-quantal no longer receives official support Per Debian, introduced in 3.16

Patch details

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

Package	Patch details
linux	Introduced by f886497, fixed by df4d925

References

Related Ubuntu Security Notices (USN)

USN-2545-1
Linux kernel (Utopic HWE) vulnerabilities
24 March 2015

USN-2546-1
Linux kernel vulnerabilities
24 March 2015

USN-2563-1
Linux kernel vulnerabilities
8 April 2015