UBUNTU-CVE-2017-18017

Details

The tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c in the Linux kernel before 4.11, and 4.9.x before 4.9.36, allows remote attackers to cause a denial of service (use-after-free and memory corruption) or possibly have unspecified other impact by leveraging the presence of xt_TCPMSS in an iptables action.

Affected Packages(22 packages)

linux

Ubuntu 14.04 LTS

Fixed in:

3.13.0-142.191

linux-lts-xenial

Ubuntu 14.04 LTS

Fixed in:

4.4.0-89.112~14.04.1

linux

Ubuntu 16.04 LTS

Fixed in:

4.4.0-89.112

linux-aws

Ubuntu 16.04 LTS

Fixed in:

4.4.0-1028.37

linux-gcp

Ubuntu 16.04 LTS

Fixed in:

4.13.0-1002.5

linux-gke

Ubuntu 16.04 LTS

Fixed in:

4.4.0-1024.24

linux-hwe

Ubuntu 16.04 LTS

Fixed in:

4.13.0-32.35~16.04.1

linux-raspi2

Ubuntu 16.04 LTS

Fixed in:

4.4.0-1067.75

linux-snapdragon

Ubuntu 16.04 LTS

Fixed in:

4.4.0-1069.74

linux-azure-fde

Ubuntu 20.04 LTS

Affected versions:

5.4.0-1063.66+cvm2.25.4.0-1063.66+cvm3.25.4.0-1064.67+cvm1.15.4.0-1065.68+cvm2.15.4.0-1067.70+cvm1.15.4.0-1068.71+cvm1.15.4.0-1069.72+cvm1.15.4.0-1070.73+cvm1.15.4.0-1072.75+cvm1.15.4.0-1073.76+cvm1.1+16 more

References

REPORT

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2638fd0f92d4397884fd991d8f4925cb3f081901

REPORT

http://patchwork.ozlabs.org/patch/746618/

REPORT

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1739765

REPORT

https://github.com/torvalds/linux/commit/2638fd0f92d4397884fd991d8f4925cb3f081901

REPORT

https://lkml.org/lkml/2017/4/2/13

REPORT