*** This bug is a security vulnerability ***
Public security bug reported:
kernel: mm: read_pmd_atomic: 32bit PAE pmd walk vs pmd_populate SMP race
condition. When holding the mmap_sem for reading, pmd_offset_map_lock
should only run on a pmd_t that has been read atomically from the pmdp
pointer, otherwise we may read only half of it leading to this crash.
** Affects: linux (Ubuntu)
Importance: Low
Status: New
** Affects: linux-armadaxp (Ubuntu)
Importance: Low
Status: New
** Affects: linux-ec2 (Ubuntu)
Importance: Low
Status: Invalid
** Affects: linux-fsl-imx51 (Ubuntu)
Importance: Low
Status: Invalid
** Affects: linux-lts-backport-maverick (Ubuntu)
Importance: Low
Status: Invalid
** Affects: linux-lts-backport-natty (Ubuntu)
Importance: Low
Status: Invalid
** Affects: linux-lts-backport-oneiric (Ubuntu)
Importance: Low
Status: Invalid
** Affects: linux-mvl-dove (Ubuntu)
Importance: Low
Status: Invalid
** Affects: linux-ti-omap4 (Ubuntu)
Importance: Low
Status: New
** Affects: linux (Ubuntu Lucid)
Importance: Low
Status: New
** Affects: linux-armadaxp (Ubuntu Lucid)
Importance: Low
Status: Invalid
** Affects: linux-ec2 (Ubuntu Lucid)
Importance: Low
Status: New
** Affects: linux-fsl-imx51 (Ubuntu Lucid)
Importance: Low
Status: Invalid
** Affects: linux-lts-backport-maverick (Ubuntu Lucid)
Importance: Low
Status: Invalid
** Affects: linux-lts-backport-natty (Ubuntu Lucid)
Importance: Low
Status: New
** Affects: linux-lts-backport-oneiric (Ubuntu Lucid)
Importance: Low
Status: New
** Affects: linux-mvl-dove (Ubuntu Lucid)
Importance: Low
Status: Invalid
** Affects: linux-ti-omap4 (Ubuntu Lucid)
Importance: Low
Status: Invalid
** Affects: linux (Ubuntu Natty)
Importance: Low
Status: New
** Affects: linux-armadaxp (Ubuntu Natty)
Importance: Low
Status: Invalid
** Affects: linux-ec2 (Ubuntu Natty)
Importance: Low
Status: Invalid
** Affects: linux-fsl-imx51 (Ubuntu Natty)
Importance: Low
Status: Invalid
** Affects: linux-lts-backport-maverick (Ubuntu Natty)
Importance: Low
Status: Invalid
** Affects: linux-lts-backport-natty (Ubuntu Natty)
Importance: Low
Status: Invalid
** Affects: linux-lts-backport-oneiric (Ubuntu Natty)
Importance: Low
Status: Invalid
** Affects: linux-mvl-dove (Ubuntu Natty)
Importance: Low
Status: Invalid
** Affects: linux-ti-omap4 (Ubuntu Natty)
Importance: Low
Status: New
** Affects: linux (Ubuntu Oneiric)
Importance: Low
Status: New
** Affects: linux-armadaxp (Ubuntu Oneiric)
Importance: Low
Status: Invalid
** Affects: linux-ec2 (Ubuntu Oneiric)
Importance: Low
Status: Invalid
** Affects: linux-fsl-imx51 (Ubuntu Oneiric)
Importance: Low
Status: Invalid
** Affects: linux-lts-backport-maverick (Ubuntu Oneiric)
Importance: Low
Status: Invalid
** Affects: linux-lts-backport-natty (Ubuntu Oneiric)
Importance: Low
Status: Invalid
** Affects: linux-lts-backport-oneiric (Ubuntu Oneiric)
Importance: Low
Status: Invalid
** Affects: linux-mvl-dove (Ubuntu Oneiric)
Importance: Low
Status: Invalid
** Affects: linux-ti-omap4 (Ubuntu Oneiric)
Importance: Low
Status: New
** Affects: linux (Ubuntu Precise)
Importance: Low
Status: New
** Affects: linux-armadaxp (Ubuntu Precise)
Importance: Low
Status: New
** Affects: linux-ec2 (Ubuntu Precise)
Importance: Low
Status: Invalid
** Affects: linux-fsl-imx51 (Ubuntu Precise)
Importance: Low
Status: Invalid
** Affects: linux-lts-backport-maverick (Ubuntu Precise)
Importance: Low
Status: Invalid
** Affects: linux-lts-backport-natty (Ubuntu Precise)
Importance: Low
Status: Invalid
** Affects: linux-lts-backport-oneiric (Ubuntu Precise)
Importance: Low
Status: Invalid
** Affects: linux-mvl-dove (Ubuntu Precise)
Importance: Low
Status: Invalid
** Affects: linux-ti-omap4 (Ubuntu Precise)
Importance: Low
Status: New
** Affects: linux (Ubuntu Quantal)
Importance: Low
Status: New
** Affects: linux-armadaxp (Ubuntu Quantal)
Importance: Low
Status: New
** Affects: linux-ec2 (Ubuntu Quantal)
Importance: Low
Status: Invalid
** Affects: linux-fsl-imx51 (Ubuntu Quantal)
Importance: Low
Status: Invalid
** Affects: linux-lts-backport-maverick (Ubuntu Quantal)
Importance: Low
Status: Invalid
** Affects: linux-lts-backport-natty (Ubuntu Quantal)
Importance: Low
Status: Invalid
** Affects: linux-lts-backport-oneiric (Ubuntu Quantal)
Importance: Low
Status: Invalid
** Affects: linux-mvl-dove (Ubuntu Quantal)
Importance: Low
Status: Invalid
** Affects: linux-ti-omap4 (Ubuntu Quantal)
Importance: Low
Status: New
** Affects: linux (Ubuntu Hardy)
Importance: Low
Status: New
** Affects: linux-armadaxp (Ubuntu Hardy)
Importance: Low
Status: Invalid
** Affects: linux-ec2 (Ubuntu Hardy)
Importance: Low
Status: Invalid
** Affects: linux-fsl-imx51 (Ubuntu Hardy)
Importance: Low
Status: Invalid
** Affects: linux-lts-backport-maverick (Ubuntu Hardy)
Importance: Low
Status: Invalid
** Affects: linux-lts-backport-natty (Ubuntu Hardy)
Importance: Low
Status: Invalid
** Affects: linux-lts-backport-oneiric (Ubuntu Hardy)
Importance: Low
Status: Invalid
** Affects: linux-mvl-dove (Ubuntu Hardy)
Importance: Low
Status: Invalid
** Affects: linux-ti-omap4 (Ubuntu Hardy)
Importance: Low
Status: Invalid
** Tags: kernel-cve-tracking-bug
** Tags added: kernel-cve-tracking-bug
** This bug has been flagged as a security vulnerability
** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2012-2373
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https://bugs.launchpad.net/bugs/1002503
Title:
CVE-2012-2373
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