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Ubuntu: (Multiple Advisories) (CVE-2017-2636): Linux kernel (AWS) vulnerability

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Ubuntu: (Multiple Advisories) (CVE-2017-2636): Linux kernel (AWS) vulnerability

Severity
7
CVSS
(AV:L/AC:M/Au:N/C:C/I:C/A:C)
Published
03/07/2017
Created
07/25/2018
Added
03/08/2017
Modified
02/13/2023

Description

A race condition flaw was found in the N_HLDC Linux kernel driver when accessing n_hdlc.tbuf list that can lead to double free. A local, unprivileged user able to set the HDLC line discipline on the tty device could use this flaw to increase their privileges on the system.

Solution(s)

  • ubuntu-upgrade-linux-image-3-13-0-112-generic
  • ubuntu-upgrade-linux-image-3-13-0-112-generic-lpae
  • ubuntu-upgrade-linux-image-3-13-0-112-lowlatency
  • ubuntu-upgrade-linux-image-3-13-0-112-powerpc-e500
  • ubuntu-upgrade-linux-image-3-13-0-112-powerpc-e500mc
  • ubuntu-upgrade-linux-image-3-13-0-112-powerpc-smp
  • ubuntu-upgrade-linux-image-3-13-0-112-powerpc64-emb
  • ubuntu-upgrade-linux-image-3-13-0-112-powerpc64-smp
  • ubuntu-upgrade-linux-image-3-2-0-124-generic
  • ubuntu-upgrade-linux-image-3-2-0-124-generic-pae
  • ubuntu-upgrade-linux-image-3-2-0-124-highbank
  • ubuntu-upgrade-linux-image-3-2-0-124-omap
  • ubuntu-upgrade-linux-image-3-2-0-124-powerpc-smp
  • ubuntu-upgrade-linux-image-3-2-0-124-powerpc64-smp
  • ubuntu-upgrade-linux-image-3-2-0-124-virtual
  • ubuntu-upgrade-linux-image-3-2-0-1502-omap4
  • ubuntu-upgrade-linux-image-4-4-0-1005-gke
  • ubuntu-upgrade-linux-image-4-4-0-1007-aws
  • ubuntu-upgrade-linux-image-4-4-0-1046-raspi2
  • ubuntu-upgrade-linux-image-4-4-0-1050-snapdragon
  • ubuntu-upgrade-linux-image-4-4-0-66-generic
  • ubuntu-upgrade-linux-image-4-4-0-66-generic-lpae
  • ubuntu-upgrade-linux-image-4-4-0-66-lowlatency
  • ubuntu-upgrade-linux-image-4-4-0-66-powerpc-e500mc
  • ubuntu-upgrade-linux-image-4-4-0-66-powerpc-smp
  • ubuntu-upgrade-linux-image-4-4-0-66-powerpc64-emb
  • ubuntu-upgrade-linux-image-4-4-0-66-powerpc64-smp
  • ubuntu-upgrade-linux-image-4-8-0-1028-raspi2
  • ubuntu-upgrade-linux-image-4-8-0-41-generic
  • ubuntu-upgrade-linux-image-4-8-0-41-generic-lpae
  • ubuntu-upgrade-linux-image-4-8-0-41-lowlatency
  • ubuntu-upgrade-linux-image-4-8-0-41-powerpc-e500mc
  • ubuntu-upgrade-linux-image-4-8-0-41-powerpc-smp
  • ubuntu-upgrade-linux-image-4-8-0-41-powerpc64-emb
  • ubuntu-upgrade-linux-image-aws
  • ubuntu-upgrade-linux-image-generic
  • ubuntu-upgrade-linux-image-generic-hwe-16-04
  • ubuntu-upgrade-linux-image-generic-lpae
  • ubuntu-upgrade-linux-image-generic-lpae-hwe-16-04
  • ubuntu-upgrade-linux-image-generic-lpae-lts-trusty
  • ubuntu-upgrade-linux-image-generic-lpae-lts-xenial
  • ubuntu-upgrade-linux-image-generic-lts-trusty
  • ubuntu-upgrade-linux-image-generic-lts-xenial
  • ubuntu-upgrade-linux-image-generic-pae
  • ubuntu-upgrade-linux-image-gke
  • ubuntu-upgrade-linux-image-highbank
  • ubuntu-upgrade-linux-image-lowlatency
  • ubuntu-upgrade-linux-image-lowlatency-hwe-16-04
  • ubuntu-upgrade-linux-image-lowlatency-lts-xenial
  • ubuntu-upgrade-linux-image-omap
  • ubuntu-upgrade-linux-image-omap4
  • ubuntu-upgrade-linux-image-powerpc-e500
  • ubuntu-upgrade-linux-image-powerpc-e500mc
  • ubuntu-upgrade-linux-image-powerpc-e500mc-lts-xenial
  • ubuntu-upgrade-linux-image-powerpc-smp
  • ubuntu-upgrade-linux-image-powerpc-smp-lts-xenial
  • ubuntu-upgrade-linux-image-powerpc64-emb
  • ubuntu-upgrade-linux-image-powerpc64-emb-lts-xenial
  • ubuntu-upgrade-linux-image-powerpc64-smp
  • ubuntu-upgrade-linux-image-powerpc64-smp-lts-xenial
  • ubuntu-upgrade-linux-image-raspi2
  • ubuntu-upgrade-linux-image-snapdragon
  • ubuntu-upgrade-linux-image-virtual

References

  • USN-3218-1
  • USN-3219-1
  • USN-3219-2
  • USN-3220-1
  • USN-3220-2
  • USN-3220-3
  • USN-3221-1
  • USN-3221-2
  • DLA-849-1
  • DSA-3804
  • 96732
  • 1037963
  • RHSA-2017:0892
  • RHSA-2017:0931
  • RHSA-2017:0932
  • RHSA-2017:0933
  • RHSA-2017:0986
  • RHSA-2017:1125
  • RHSA-2017:1126
  • RHSA-2017:1232
  • RHSA-2017:1233
  • RHSA-2017:1488
  • CVE-2017-2636
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