CVE-2014-7842: Race Condition
First published: Wed Sep 24 2014(Updated: )
It was found that reporting emulation failures to user space could lead to either a local (CVE-2014-7842) or a L2->L1 (CVE-2010-5313) denial of service. In the case of a local denial of service, an attacker must have access to the MMIO area or be able to access an I/O port. Please note that on certain systems, HPET is mapped to userspace as part of vdso (vvar) and thus an unprivileged user may generate MMIO transactions (and enter the emulator) this way.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <0:2.6.32-642.el6 | 0:2.6.32-642.el6 |
| redhat/kernel | <0:3.10.0-327.el7 | 0:3.10.0-327.el7 |
| Linux Linux kernel | <=3.17.3 | |
| Linux Linux kernel | =3.0-rc1 | |
| Linux Linux kernel | =3.0-rc2 | |
| Linux Linux kernel | =3.0-rc3 | |
| Linux Linux kernel | =3.0-rc4 | |
| Linux Linux kernel | =3.0-rc5 | |
| Linux Linux kernel | =3.0-rc6 | |
| Linux Linux kernel | =3.0-rc7 | |
| Linux Linux kernel | =3.0.1 | |
| Linux Linux kernel | =3.0.2 | |
| Linux Linux kernel | =3.0.3 | |
| Linux Linux kernel | =3.0.4 | |
| Linux Linux kernel | =3.0.5 | |
| Linux Linux kernel | =3.0.6 | |
| Linux Linux kernel | =3.0.7 | |
| Linux Linux kernel | =3.0.8 | |
| Linux Linux kernel | =3.0.9 | |
| Linux Linux kernel | =3.0.10 | |
| Linux Linux kernel | =3.0.11 | |
| Linux Linux kernel | =3.0.12 | |
| Linux Linux kernel | =3.0.13 | |
| Linux Linux kernel | =3.0.14 | |
| Linux Linux kernel | =3.0.15 | |
| Linux Linux kernel | =3.0.16 | |
| Linux Linux kernel | =3.0.17 | |
| Linux Linux kernel | =3.0.18 | |
| Linux Linux kernel | =3.0.19 | |
| Linux Linux kernel | =3.0.20 | |
| Linux Linux kernel | =3.0.21 | |
| Linux Linux kernel | =3.0.22 | |
| Linux Linux kernel | =3.0.23 | |
| Linux Linux kernel | =3.0.24 | |
| Linux Linux kernel | =3.0.25 | |
| Linux Linux kernel | =3.0.26 | |
| Linux Linux kernel | =3.0.27 | |
| Linux Linux kernel | =3.0.28 | |
| Linux Linux kernel | =3.0.29 | |
| Linux Linux kernel | =3.0.30 | |
| Linux Linux kernel | =3.0.31 | |
| Linux Linux kernel | =3.0.32 | |
| Linux Linux kernel | =3.0.33 | |
| Linux Linux kernel | =3.0.34 | |
| Linux Linux kernel | =3.0.35 | |
| Linux Linux kernel | =3.0.36 | |
| Linux Linux kernel | =3.0.37 | |
| Linux Linux kernel | =3.0.38 | |
| Linux Linux kernel | =3.0.39 | |
| Linux Linux kernel | =3.0.40 | |
| Linux Linux kernel | =3.0.41 | |
| Linux Linux kernel | =3.0.42 | |
| Linux Linux kernel | =3.0.43 | |
| Linux Linux kernel | =3.0.44 | |
| Linux Linux kernel | =3.0.45 | |
| Linux Linux kernel | =3.0.46 | |
| Linux Linux kernel | =3.0.47 | |
| Linux Linux kernel | =3.0.48 | |
| Linux Linux kernel | =3.0.49 | |
| Linux Linux kernel | =3.0.50 | |
| Linux Linux kernel | =3.0.51 | |
| Linux Linux kernel | =3.0.52 | |
| Linux Linux kernel | =3.0.53 | |
| Linux Linux kernel | =3.0.54 | |
| Linux Linux kernel | =3.0.55 | |
| Linux Linux kernel | =3.0.56 | |
| Linux Linux kernel | =3.0.57 | |
| Linux Linux kernel | =3.0.58 | |
| Linux Linux kernel | =3.0.59 | |
| Linux Linux kernel | =3.0.60 | |
| Linux Linux kernel | =3.0.61 | |
| Linux Linux kernel | =3.0.62 | |
| Linux Linux kernel | =3.0.63 | |
| Linux Linux kernel | =3.0.64 | |
| Linux Linux kernel | =3.0.65 | |
| Linux Linux kernel | =3.0.66 | |
| Linux Linux kernel | =3.0.67 | |
| Linux Linux kernel | =3.0.68 | |
| Linux Linux kernel | =3.1 | |
| Linux Linux kernel | =3.1-rc1 | |
| Linux Linux kernel | =3.1-rc2 | |
| Linux Linux kernel | =3.1-rc3 | |
| Linux Linux kernel | =3.1-rc4 | |
| Linux Linux kernel | =3.1.1 | |
| Linux Linux kernel | =3.1.2 | |
| Linux Linux kernel | =3.1.3 | |
| Linux Linux kernel | =3.1.4 | |
| Linux Linux kernel | =3.1.5 | |
| Linux Linux kernel | =3.1.6 | |
| Linux Linux kernel | =3.1.7 | |
| Linux Linux kernel | =3.1.8 | |
| Linux Linux kernel | =3.1.9 | |
| Linux Linux kernel | =3.1.10 | |
| Linux Linux kernel | =3.2 | |
| Linux Linux kernel | =3.2 | |
| Linux Linux kernel | =3.2-rc2 | |
| Linux Linux kernel | =3.2-rc3 | |
| Linux Linux kernel | =3.10 | |
| Linux Linux kernel | =3.10.0 | |
| Linux Linux kernel | =3.10.1 | |
| Linux Linux kernel | =3.10.1 | |
| Linux Linux kernel | =3.10.2 | |
| Linux Linux kernel | =3.10.2 | |
| Linux Linux kernel | =3.10.3 | |
| Linux Linux kernel | =3.10.3 | |
| Linux Linux kernel | =3.10.4 | |
| Linux Linux kernel | =3.10.4 | |
| Linux Linux kernel | =3.10.5 | |
| Linux Linux kernel | =3.10.5 | |
| Linux Linux kernel | =3.10.6 | |
| Linux Linux kernel | =3.10.6 | |
| Linux Linux kernel | =3.10.7 | |
| Linux Linux kernel | =3.10.7 | |
| Linux Linux kernel | =3.10.8 | |
| Linux Linux kernel | =3.10.8 | |
| Linux Linux kernel | =3.10.9 | |
| Linux Linux kernel | =3.10.9 | |
| Linux Linux kernel | =3.10.10 | |
| Linux Linux kernel | =3.10.11 | |
| Linux Linux kernel | =3.10.12 | |
| Linux Linux kernel | =3.10.13 | |
| Linux Linux kernel | =3.10.14 | |
| Linux Linux kernel | =3.10.15 | |
| Linux Linux kernel | =3.10.16 | |
| Linux Linux kernel | =3.10.17 | |
| Linux Linux kernel | =3.10.18 | |
| Linux Linux kernel | =3.10.19 | |
| Linux Linux kernel | =3.10.20 | |
| Linux Linux kernel | =3.10.21 | |
| Linux Linux kernel | =3.10.22 | |
| Linux Linux kernel | =3.10.23 | |
| Linux Linux kernel | =3.10.24 | |
| Linux Linux kernel | =3.10.25 | |
| Linux Linux kernel | =3.10.26 | |
| Linux Linux kernel | =3.10.27 | |
| Linux Linux kernel | =3.10.28 | |
| Linux Linux kernel | =3.10.29 | |
| Linux Linux kernel | =3.11 | |
| Linux Linux kernel | =3.11.1 | |
| Linux Linux kernel | =3.11.2 | |
| Linux Linux kernel | =3.11.3 | |
| Linux Linux kernel | =3.11.4 | |
| Linux Linux kernel | =3.11.5 | |
| Linux Linux kernel | =3.11.6 | |
| Linux Linux kernel | =3.11.7 | |
| Linux Linux kernel | =3.11.8 | |
| Linux Linux kernel | =3.11.9 | |
| Linux Linux kernel | =3.11.10 | |
| Linux Linux kernel | =3.12 | |
| Linux Linux kernel | =3.12.1 | |
| Linux Linux kernel | =3.12.2 | |
| Linux Linux kernel | =3.12.3 | |
| Linux Linux kernel | =3.12.4 | |
| Linux Linux kernel | =3.12.5 | |
| Linux Linux kernel | =3.12.6 | |
| Linux Linux kernel | =3.12.7 | |
| Linux Linux kernel | =3.12.8 | |
| Linux Linux kernel | =3.12.9 | |
| Linux Linux kernel | =3.12.10 | |
| Linux Linux kernel | =3.12.11 | |
| Linux Linux kernel | =3.12.12 | |
| Linux Linux kernel | =3.12.13 | |
| Linux Linux kernel | =3.12.14 | |
| Linux Linux kernel | =3.12.15 | |
| Linux Linux kernel | =3.12.16 | |
| Linux Linux kernel | =3.12.17 | |
| Linux Linux kernel | =3.13 | |
| Linux Linux kernel | =3.13.1 | |
| Linux Linux kernel | =3.13.2 | |
| Linux Linux kernel | =3.13.3 | |
| Linux Linux kernel | =3.13.4 | |
| Linux Linux kernel | =3.13.5 | |
| Linux Linux kernel | =3.13.6 | |
| Linux Linux kernel | =3.13.7 | |
| Linux Linux kernel | =3.13.8 | |
| Linux Linux kernel | =3.13.9 | |
| Linux Linux kernel | =3.13.10 | |
| Linux Linux kernel | =3.13.11 | |
| Linux Linux kernel | =3.14 | |
| Linux Linux kernel | =3.14-rc1 | |
| Linux Linux kernel | =3.14-rc2 | |
| Linux Linux kernel | =3.14-rc3 | |
| Linux Linux kernel | =3.14-rc4 | |
| Linux Linux kernel | =3.14-rc5 | |
| Linux Linux kernel | =3.14-rc6 | |
| Linux Linux kernel | =3.14-rc7 | |
| Linux Linux kernel | =3.14-rc8 | |
| Linux Linux kernel | =3.14.1 | |
| Linux Linux kernel | =3.14.2 | |
| Linux Linux kernel | =3.14.3 | |
| Linux Linux kernel | =3.14.4 | |
| Linux Linux kernel | =3.14.5 | |
| Linux Linux kernel | =3.15 | |
| Linux Linux kernel | =3.15.1 | |
| Linux Linux kernel | =3.15.2 | |
| Linux Linux kernel | =3.15.3 | |
| Linux Linux kernel | =3.15.4 | |
| Linux Linux kernel | =3.15.5 | |
| Linux Linux kernel | =3.15.6 | |
| Linux Linux kernel | =3.15.7 | |
| Linux Linux kernel | =3.15.8 | |
| Linux Linux kernel | =3.16.0 | |
| Linux Linux kernel | =3.16.1 | |
| Linux Linux kernel | =3.17 | |
| Linux Linux kernel | =3.17.1 | |
| Linux Linux kernel | =3.17.2 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.112-1 6.11.7-1 6.11.9-1 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2014-7842 https://nvd.nist.gov/vuln/detail/CVE-2014-7842
- https://bugzilla.redhat.com/show_bug.cgi?id=1163762
- https://access.redhat.com/errata/RHSA-2016:0855
- https://access.redhat.com/errata/RHSA-2015:2152
- https://access.redhat.com/security/cve/CVE-2014-7842
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a2b9e6c1a35afcc0973acb72e591c714e78885ff
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html
- http://rhn.redhat.com/errata/RHSA-2016-0855.html
- http://secunia.com/advisories/62305
- http://secunia.com/advisories/62326
- http://secunia.com/advisories/62336
- http://www.openwall.com/lists/oss-security/2014/11/13/7
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- http://www.securityfocus.com/bid/71078
- https://github.com/torvalds/linux/commit/a2b9e6c1a35afcc0973acb72e591c714e78885ff
- https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.17.4
- https://launchpad.net/bugs/cve/CVE-2014-7842
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a2b9e6c1a35a
- https://security-tracker.debian.org/tracker/CVE-2014-7842
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-7842
- https://nvd.nist.gov/vuln/detail/CVE-2014-7842
- https://ubuntu.com/security/CVE-2014-7842
- collector/redhat-cve
- collector/nvd-index
- agent/type
- agent/first-publish-date
- agent/remedy
- collector/launchpad-cve
- source/Launchpad
- agent/author
- collector/nvd-cve
- source/NVD
- agent/software-canonical-lookup
- agent/severity
- agent/weakness
- agent/description
- agent/references
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/tags
- agent/event
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- collector/usn-cve
- source/Ubuntu
- package-manager/redhat
- vendor/linux
- canonical/linux linux kernel
- version/linux linux kernel/3.17.3
- version/linux linux kernel/3.0-rc1
- version/linux linux kernel/3.0-rc2
- version/linux linux kernel/3.0-rc3
- version/linux linux kernel/3.0-rc4
- version/linux linux kernel/3.0-rc5
- version/linux linux kernel/3.0-rc6
- version/linux linux kernel/3.0-rc7
- version/linux linux kernel/3.0.1
- version/linux linux kernel/3.0.2
- version/linux linux kernel/3.0.3
- version/linux linux kernel/3.0.4
- version/linux linux kernel/3.0.5
- version/linux linux kernel/3.0.6
- version/linux linux kernel/3.0.7
- version/linux linux kernel/3.0.8
- version/linux linux kernel/3.0.9
- version/linux linux kernel/3.0.10
- version/linux linux kernel/3.0.11
- version/linux linux kernel/3.0.12
- version/linux linux kernel/3.0.13
- version/linux linux kernel/3.0.14
- version/linux linux kernel/3.0.15
- version/linux linux kernel/3.0.16
- version/linux linux kernel/3.0.17
- version/linux linux kernel/3.0.18
- version/linux linux kernel/3.0.19
- version/linux linux kernel/3.0.20
- version/linux linux kernel/3.0.21
- version/linux linux kernel/3.0.22
- version/linux linux kernel/3.0.23
- version/linux linux kernel/3.0.24
- version/linux linux kernel/3.0.25
- version/linux linux kernel/3.0.26
- version/linux linux kernel/3.0.27
- version/linux linux kernel/3.0.28
- version/linux linux kernel/3.0.29
- version/linux linux kernel/3.0.30
- version/linux linux kernel/3.0.31
- version/linux linux kernel/3.0.32
- version/linux linux kernel/3.0.33
- version/linux linux kernel/3.0.34
- version/linux linux kernel/3.0.35
- version/linux linux kernel/3.0.36
- version/linux linux kernel/3.0.37
- version/linux linux kernel/3.0.38
- version/linux linux kernel/3.0.39
- version/linux linux kernel/3.0.40
- version/linux linux kernel/3.0.41
- version/linux linux kernel/3.0.42
- version/linux linux kernel/3.0.43
- version/linux linux kernel/3.0.44
- version/linux linux kernel/3.0.45
- version/linux linux kernel/3.0.46
- version/linux linux kernel/3.0.47
- version/linux linux kernel/3.0.48
- version/linux linux kernel/3.0.49
- version/linux linux kernel/3.0.50
- version/linux linux kernel/3.0.51
- version/linux linux kernel/3.0.52
- version/linux linux kernel/3.0.53
- version/linux linux kernel/3.0.54
- version/linux linux kernel/3.0.55
- version/linux linux kernel/3.0.56
- version/linux linux kernel/3.0.57
- version/linux linux kernel/3.0.58
- version/linux linux kernel/3.0.59
- version/linux linux kernel/3.0.60
- version/linux linux kernel/3.0.61
- version/linux linux kernel/3.0.62
- version/linux linux kernel/3.0.63
- version/linux linux kernel/3.0.64
- version/linux linux kernel/3.0.65
- version/linux linux kernel/3.0.66
- version/linux linux kernel/3.0.67
- version/linux linux kernel/3.0.68
- version/linux linux kernel/3.1
- version/linux linux kernel/3.1-rc1
- version/linux linux kernel/3.1-rc2
- version/linux linux kernel/3.1-rc3
- version/linux linux kernel/3.1-rc4
- version/linux linux kernel/3.1.1
- version/linux linux kernel/3.1.2
- version/linux linux kernel/3.1.3
- version/linux linux kernel/3.1.4
- version/linux linux kernel/3.1.5
- version/linux linux kernel/3.1.6
- version/linux linux kernel/3.1.7
- version/linux linux kernel/3.1.8
- version/linux linux kernel/3.1.9
- version/linux linux kernel/3.1.10
- version/linux linux kernel/3.2
- version/linux linux kernel/3.2-rc2
- version/linux linux kernel/3.2-rc3
- version/linux linux kernel/3.10
- version/linux linux kernel/3.10.0
- version/linux linux kernel/3.10.1
- version/linux linux kernel/3.10.2
- version/linux linux kernel/3.10.3
- version/linux linux kernel/3.10.4
- version/linux linux kernel/3.10.5
- version/linux linux kernel/3.10.6
- version/linux linux kernel/3.10.7
- version/linux linux kernel/3.10.8
- version/linux linux kernel/3.10.9
- version/linux linux kernel/3.10.10
- version/linux linux kernel/3.10.11
- version/linux linux kernel/3.10.12
- version/linux linux kernel/3.10.13
- version/linux linux kernel/3.10.14
- version/linux linux kernel/3.10.15
- version/linux linux kernel/3.10.16
- version/linux linux kernel/3.10.17
- version/linux linux kernel/3.10.18
- version/linux linux kernel/3.10.19
- version/linux linux kernel/3.10.20
- version/linux linux kernel/3.10.21
- version/linux linux kernel/3.10.22
- version/linux linux kernel/3.10.23
- version/linux linux kernel/3.10.24
- version/linux linux kernel/3.10.25
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- version/linux linux kernel/3.11.3
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- version/linux linux kernel/3.11.5
- version/linux linux kernel/3.11.6
- version/linux linux kernel/3.11.7
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- version/linux linux kernel/3.13
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- version/linux linux kernel/3.13.3
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- package-manager/debian