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Ubuntu: (Multiple Advisories) (CVE-2015-7550): Linux kernel (Vivid HWE) regression

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Ubuntu: (Multiple Advisories) (CVE-2015-7550): Linux kernel (Vivid HWE) regression

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:C)
Published
02/07/2016
Created
07/25/2018
Added
02/07/2016
Modified
06/29/2020

Description

The keyctl_read_key function in security/keys/keyctl.c in the Linux kernel before 4.3.4 does not properly use a semaphore, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted application that leverages a race condition between keyctl_revoke and keyctl_read calls.

Solution(s)

  • ubuntu-upgrade-linux-image-3-13-0-79-generic
  • ubuntu-upgrade-linux-image-3-13-0-79-generic-lpae
  • ubuntu-upgrade-linux-image-3-13-0-79-lowlatency
  • ubuntu-upgrade-linux-image-3-13-0-79-powerpc-e500
  • ubuntu-upgrade-linux-image-3-13-0-79-powerpc-e500mc
  • ubuntu-upgrade-linux-image-3-13-0-79-powerpc-smp
  • ubuntu-upgrade-linux-image-3-13-0-79-powerpc64-emb
  • ubuntu-upgrade-linux-image-3-13-0-79-powerpc64-smp
  • ubuntu-upgrade-linux-image-3-16-0-60-generic
  • ubuntu-upgrade-linux-image-3-16-0-60-generic-lpae
  • ubuntu-upgrade-linux-image-3-16-0-60-lowlatency
  • ubuntu-upgrade-linux-image-3-16-0-60-powerpc-e500mc
  • ubuntu-upgrade-linux-image-3-16-0-60-powerpc-smp
  • ubuntu-upgrade-linux-image-3-16-0-60-powerpc64-emb
  • ubuntu-upgrade-linux-image-3-16-0-60-powerpc64-smp
  • ubuntu-upgrade-linux-image-3-19-0-51-generic
  • ubuntu-upgrade-linux-image-3-19-0-51-generic-lpae
  • ubuntu-upgrade-linux-image-3-19-0-51-lowlatency
  • ubuntu-upgrade-linux-image-3-19-0-51-powerpc-e500mc
  • ubuntu-upgrade-linux-image-3-19-0-51-powerpc-smp
  • ubuntu-upgrade-linux-image-3-19-0-51-powerpc64-emb
  • ubuntu-upgrade-linux-image-3-19-0-51-powerpc64-smp
  • ubuntu-upgrade-linux-image-3-2-0-1477-omap4
  • ubuntu-upgrade-linux-image-3-2-0-99-generic
  • ubuntu-upgrade-linux-image-3-2-0-99-generic-pae
  • ubuntu-upgrade-linux-image-3-2-0-99-highbank
  • ubuntu-upgrade-linux-image-3-2-0-99-omap
  • ubuntu-upgrade-linux-image-3-2-0-99-powerpc-smp
  • ubuntu-upgrade-linux-image-3-2-0-99-powerpc64-smp
  • ubuntu-upgrade-linux-image-3-2-0-99-virtual
  • ubuntu-upgrade-linux-image-4-2-0-1022-raspi2
  • ubuntu-upgrade-linux-image-4-2-0-27-generic
  • ubuntu-upgrade-linux-image-4-2-0-27-generic-lpae
  • ubuntu-upgrade-linux-image-4-2-0-27-lowlatency
  • ubuntu-upgrade-linux-image-4-2-0-27-powerpc-e500mc
  • ubuntu-upgrade-linux-image-4-2-0-27-powerpc-smp
  • ubuntu-upgrade-linux-image-4-2-0-27-powerpc64-emb
  • ubuntu-upgrade-linux-image-4-2-0-27-powerpc64-smp

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