CVE-2012-4530: Infoleak
First published: Fri Oct 19 2012(Updated: )
A memory disclosure flaw has been found in the way binfmt_script load_script() function handled excessive recursions. An unprivileged local user could use this flaw to leak kernel memory. References: - <a href="http://www.halfdog.net/Security/2012/LinuxKernelBinfmtScriptStackDataDisclosure/">http://www.halfdog.net/Security/2012/LinuxKernelBinfmtScriptStackDataDisclosure/</a> - <a href="https://lkml.org/lkml/2012/8/18/75">https://lkml.org/lkml/2012/8/18/75</a> Proposed upstream fix: - <a href="https://lkml.org/lkml/2012/9/23/29">https://lkml.org/lkml/2012/9/23/29</a>
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <=3.7.1 | |
| Linux Kernel | =3.0-rc1 | |
| Linux Kernel | =3.0-rc2 | |
| Linux Kernel | =3.0-rc3 | |
| Linux Kernel | =3.0-rc4 | |
| Linux Kernel | =3.0-rc5 | |
| Linux Kernel | =3.0-rc6 | |
| Linux Kernel | =3.0-rc7 | |
| Linux Kernel | =3.0.1 | |
| Linux Kernel | =3.0.2 | |
| Linux Kernel | =3.0.3 | |
| Linux Kernel | =3.0.4 | |
| Linux Kernel | =3.0.5 | |
| Linux Kernel | =3.0.6 | |
| Linux Kernel | =3.0.7 | |
| Linux Kernel | =3.0.8 | |
| Linux Kernel | =3.0.9 | |
| Linux Kernel | =3.0.10 | |
| Linux Kernel | =3.0.11 | |
| Linux Kernel | =3.0.12 | |
| Linux Kernel | =3.0.13 | |
| Linux Kernel | =3.0.14 | |
| Linux Kernel | =3.0.15 | |
| Linux Kernel | =3.0.16 | |
| Linux Kernel | =3.0.17 | |
| Linux Kernel | =3.0.18 | |
| Linux Kernel | =3.0.19 | |
| Linux Kernel | =3.0.20 | |
| Linux Kernel | =3.0.21 | |
| Linux Kernel | =3.0.22 | |
| Linux Kernel | =3.0.23 | |
| Linux Kernel | =3.0.24 | |
| Linux Kernel | =3.0.25 | |
| Linux Kernel | =3.0.26 | |
| Linux Kernel | =3.0.27 | |
| Linux Kernel | =3.0.28 | |
| Linux Kernel | =3.0.29 | |
| Linux Kernel | =3.0.30 | |
| Linux Kernel | =3.0.31 | |
| Linux Kernel | =3.0.32 | |
| Linux Kernel | =3.0.33 | |
| Linux Kernel | =3.0.34 | |
| Linux Kernel | =3.0.35 | |
| Linux Kernel | =3.0.36 | |
| Linux Kernel | =3.0.37 | |
| Linux Kernel | =3.0.38 | |
| Linux Kernel | =3.0.39 | |
| Linux Kernel | =3.0.40 | |
| Linux Kernel | =3.0.41 | |
| Linux Kernel | =3.0.42 | |
| Linux Kernel | =3.0.43 | |
| Linux Kernel | =3.0.44 | |
| Linux Kernel | =3.1 | |
| Linux Kernel | =3.1-rc1 | |
| Linux Kernel | =3.1-rc2 | |
| Linux Kernel | =3.1-rc3 | |
| Linux Kernel | =3.1-rc4 | |
| Linux Kernel | =3.1.1 | |
| Linux Kernel | =3.1.2 | |
| Linux Kernel | =3.1.3 | |
| Linux Kernel | =3.1.4 | |
| Linux Kernel | =3.1.5 | |
| Linux Kernel | =3.1.6 | |
| Linux Kernel | =3.1.7 | |
| Linux Kernel | =3.1.8 | |
| Linux Kernel | =3.1.9 | |
| Linux Kernel | =3.1.10 | |
| Linux Kernel | =3.2 | |
| Linux Kernel | =3.2-rc2 | |
| Linux Kernel | =3.2-rc3 | |
| Linux Kernel | =3.2-rc4 | |
| Linux Kernel | =3.2-rc5 | |
| Linux Kernel | =3.2-rc6 | |
| Linux Kernel | =3.2-rc7 | |
| Linux Kernel | =3.2.1 | |
| Linux Kernel | =3.2.2 | |
| Linux Kernel | =3.2.3 | |
| Linux Kernel | =3.2.4 | |
| Linux Kernel | =3.2.5 | |
| Linux Kernel | =3.2.6 | |
| Linux Kernel | =3.2.7 | |
| Linux Kernel | =3.2.8 | |
| Linux Kernel | =3.2.9 | |
| Linux Kernel | =3.2.10 | |
| Linux Kernel | =3.2.11 | |
| Linux Kernel | =3.2.12 | |
| Linux Kernel | =3.2.13 | |
| Linux Kernel | =3.2.14 | |
| Linux Kernel | =3.2.15 | |
| Linux Kernel | =3.2.16 | |
| Linux Kernel | =3.2.17 | |
| Linux Kernel | =3.2.18 | |
| Linux Kernel | =3.2.19 | |
| Linux Kernel | =3.2.20 | |
| Linux Kernel | =3.2.21 | |
| Linux Kernel | =3.2.22 | |
| Linux Kernel | =3.2.23 | |
| Linux Kernel | =3.2.24 | |
| Linux Kernel | =3.2.25 | |
| Linux Kernel | =3.2.26 | |
| Linux Kernel | =3.2.27 | |
| Linux Kernel | =3.2.28 | |
| Linux Kernel | =3.2.29 | |
| Linux Kernel | =3.2.30 | |
| Linux Kernel | =3.3 | |
| Linux Kernel | =3.3-rc1 | |
| Linux Kernel | =3.3-rc2 | |
| Linux Kernel | =3.3-rc3 | |
| Linux Kernel | =3.3-rc4 | |
| Linux Kernel | =3.3-rc5 | |
| Linux Kernel | =3.3-rc6 | |
| Linux Kernel | =3.3-rc7 | |
| Linux Kernel | =3.3.1 | |
| Linux Kernel | =3.3.2 | |
| Linux Kernel | =3.3.3 | |
| Linux Kernel | =3.3.4 | |
| Linux Kernel | =3.3.5 | |
| Linux Kernel | =3.3.6 | |
| Linux Kernel | =3.3.7 | |
| Linux Kernel | =3.3.8 | |
| Linux Kernel | =3.4 | |
| Linux Kernel | =3.4-rc1 | |
| Linux Kernel | =3.4-rc2 | |
| Linux Kernel | =3.4-rc3 | |
| Linux Kernel | =3.4-rc4 | |
| Linux Kernel | =3.4-rc5 | |
| Linux Kernel | =3.4-rc6 | |
| Linux Kernel | =3.4-rc7 | |
| Linux Kernel | =3.4.1 | |
| Linux Kernel | =3.4.2 | |
| Linux Kernel | =3.4.3 | |
| Linux Kernel | =3.4.4 | |
| Linux Kernel | =3.4.5 | |
| Linux Kernel | =3.4.6 | |
| Linux Kernel | =3.4.7 | |
| Linux Kernel | =3.4.8 | |
| Linux Kernel | =3.4.9 | |
| Linux Kernel | =3.4.10 | |
| Linux Kernel | =3.4.11 | |
| Linux Kernel | =3.4.12 | |
| Linux Kernel | =3.4.13 | |
| Linux Kernel | =3.4.14 | |
| Linux Kernel | =3.4.15 | |
| Linux Kernel | =3.4.16 | |
| Linux Kernel | =3.4.17 | |
| Linux Kernel | =3.4.18 | |
| Linux Kernel | =3.4.19 | |
| Linux Kernel | =3.4.20 | |
| Linux Kernel | =3.4.21 | |
| Linux Kernel | =3.4.22 | |
| Linux Kernel | =3.4.23 | |
| Linux Kernel | =3.4.24 | |
| Linux Kernel | =3.5.1 | |
| Linux Kernel | =3.5.2 | |
| Linux Kernel | =3.5.3 | |
| Linux Kernel | =3.5.4 | |
| Linux Kernel | =3.5.5 | |
| Linux Kernel | =3.5.6 | |
| Linux Kernel | =3.5.7 | |
| Linux Kernel | =3.6 | |
| Linux Kernel | =3.6.1 | |
| Linux Kernel | =3.6.2 | |
| Linux Kernel | =3.6.3 | |
| Linux Kernel | =3.6.4 | |
| Linux Kernel | =3.6.5 | |
| Linux Kernel | =3.6.6 | |
| Linux Kernel | =3.6.7 | |
| Linux Kernel | =3.6.8 | |
| Linux Kernel | =3.7 | |
| <=3.7.1 | ||
| =3.0-rc1 | ||
| =3.0-rc2 | ||
| =3.0-rc3 | ||
| =3.0-rc4 | ||
| =3.0-rc5 | ||
| =3.0-rc6 | ||
| =3.0-rc7 | ||
| =3.0.1 | ||
| =3.0.2 | ||
| =3.0.3 | ||
| =3.0.4 | ||
| =3.0.5 | ||
| =3.0.6 | ||
| =3.0.7 | ||
| =3.0.8 | ||
| =3.0.9 | ||
| =3.0.10 | ||
| =3.0.11 | ||
| =3.0.12 | ||
| =3.0.13 | ||
| =3.0.14 | ||
| =3.0.15 | ||
| =3.0.16 | ||
| =3.0.17 | ||
| =3.0.18 | ||
| =3.0.19 | ||
| =3.0.20 | ||
| =3.0.21 | ||
| =3.0.22 | ||
| =3.0.23 | ||
| =3.0.24 | ||
| =3.0.25 | ||
| =3.0.26 | ||
| =3.0.27 | ||
| =3.0.28 | ||
| =3.0.29 | ||
| =3.0.30 | ||
| =3.0.31 | ||
| =3.0.32 | ||
| =3.0.33 | ||
| =3.0.34 | ||
| =3.0.35 | ||
| =3.0.36 | ||
| =3.0.37 | ||
| =3.0.38 | ||
| =3.0.39 | ||
| =3.0.40 | ||
| =3.0.41 | ||
| =3.0.42 | ||
| =3.0.43 | ||
| =3.0.44 | ||
| =3.1 | ||
| =3.1-rc1 | ||
| =3.1-rc2 | ||
| =3.1-rc3 | ||
| =3.1-rc4 | ||
| =3.1.1 | ||
| =3.1.2 | ||
| =3.1.3 | ||
| =3.1.4 | ||
| =3.1.5 | ||
| =3.1.6 | ||
| =3.1.7 | ||
| =3.1.8 | ||
| =3.1.9 | ||
| =3.1.10 | ||
| =3.2 | ||
| =3.2-rc2 | ||
| =3.2-rc3 | ||
| =3.2-rc4 | ||
| =3.2-rc5 | ||
| =3.2-rc6 | ||
| =3.2-rc7 | ||
| =3.2.1 | ||
| =3.2.2 | ||
| =3.2.3 | ||
| =3.2.4 | ||
| =3.2.5 | ||
| =3.2.6 | ||
| =3.2.7 | ||
| =3.2.8 | ||
| =3.2.9 | ||
| =3.2.10 | ||
| =3.2.11 | ||
| =3.2.12 | ||
| =3.2.13 | ||
| =3.2.14 | ||
| =3.2.15 | ||
| =3.2.16 | ||
| =3.2.17 | ||
| =3.2.18 | ||
| =3.2.19 | ||
| =3.2.20 | ||
| =3.2.21 | ||
| =3.2.22 | ||
| =3.2.23 | ||
| =3.2.24 | ||
| =3.2.25 | ||
| =3.2.26 | ||
| =3.2.27 | ||
| =3.2.28 | ||
| =3.2.29 | ||
| =3.2.30 | ||
| =3.3 | ||
| =3.3-rc1 | ||
| =3.3-rc2 | ||
| =3.3-rc3 | ||
| =3.3-rc4 | ||
| =3.3-rc5 | ||
| =3.3-rc6 | ||
| =3.3-rc7 | ||
| =3.3.1 | ||
| =3.3.2 | ||
| =3.3.3 | ||
| =3.3.4 | ||
| =3.3.5 | ||
| =3.3.6 | ||
| =3.3.7 | ||
| =3.3.8 | ||
| =3.4 | ||
| =3.4-rc1 | ||
| =3.4-rc2 | ||
| =3.4-rc3 | ||
| =3.4-rc4 | ||
| =3.4-rc5 | ||
| =3.4-rc6 | ||
| =3.4-rc7 | ||
| =3.4.1 | ||
| =3.4.2 | ||
| =3.4.3 | ||
| =3.4.4 | ||
| =3.4.5 | ||
| =3.4.6 | ||
| =3.4.7 | ||
| =3.4.8 | ||
| =3.4.9 | ||
| =3.4.10 | ||
| =3.4.11 | ||
| =3.4.12 | ||
| =3.4.13 | ||
| =3.4.14 | ||
| =3.4.15 | ||
| =3.4.16 | ||
| =3.4.17 | ||
| =3.4.18 | ||
| =3.4.19 | ||
| =3.4.20 | ||
| =3.4.21 | ||
| =3.4.22 | ||
| =3.4.23 | ||
| =3.4.24 | ||
| =3.5.1 | ||
| =3.5.2 | ||
| =3.5.3 | ||
| =3.5.4 | ||
| =3.5.5 | ||
| =3.5.6 | ||
| =3.5.7 | ||
| =3.6 | ||
| =3.6.1 | ||
| =3.6.2 | ||
| =3.6.3 | ||
| =3.6.4 | ||
| =3.6.5 | ||
| =3.6.6 | ||
| =3.6.7 | ||
| =3.6.8 | ||
| =3.7 | ||
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.133-1 6.12.22-1 |
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Reference Links
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b66c5984017533316fd1951770302649baf1aa33
- http://lists.opensuse.org/opensuse-security-announce/2013-04/msg00018.html
- http://rhn.redhat.com/errata/RHSA-2013-0223.html
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.7.2
- http://www.openwall.com/lists/oss-security/2012/10/19/3
- https://bugzilla.redhat.com/show_bug.cgi?id=868285
- https://github.com/torvalds/linux/commit/b66c5984017533316fd1951770302649baf1aa33
- http://www.halfdog.net/Security/2012/LinuxKernelBinfmtScriptStackDataDisclosure/
- https://lkml.org/lkml/2012/8/18/75
- https://lkml.org/lkml/2012/9/23/29
- https://access.redhat.com/security/cve/CVE-2012-4530
- http://www.spinics.net/lists/mm-commits/msg92245.html
- http://www.spinics.net/lists/mm-commits/msg92433.html
- https://lkml.org/lkml/2012/11/18/142
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=880147
- http://www.spinics.net/lists/mm-commits/msg93063.html
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=868285#c10
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=868285#c11
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=880147#c14
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=868285#c12
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b66c5984017533316fd1951770302649baf1aa33
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d740269867021faf4ce38a449353d2b986c34a67
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=868285#c15
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit
- https://rhn.redhat.com/errata/RHSA-2013-0223.html
- https://rhn.redhat.com/errata/RHSA-2013-0566.html
- https://launchpad.net/bugs/cve/CVE-2012-4530
- https://security-tracker.debian.org/tracker/CVE-2012-4530
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-4530
- https://nvd.nist.gov/vuln/detail/CVE-2012-4530
- https://ubuntu.com/security/CVE-2012-4530
Frequently Asked Questions
What is the severity of CVE-2012-4530?
CVE-2012-4530 is considered to have a high severity due to its potential to leak sensitive kernel memory to unprivileged local users.
How do I fix CVE-2012-4530?
To fix CVE-2012-4530, upgrade to the patched versions of the Linux kernel, specifically versions above 3.7.1.
What systems are affected by CVE-2012-4530?
CVE-2012-4530 affects various versions of the Linux kernel, including all versions from 3.0 to 3.7.1.
Who can exploit CVE-2012-4530?
An unprivileged local user can exploit CVE-2012-4530 to leak kernel memory.
What are the impacts of exploiting CVE-2012-4530?
Exploiting CVE-2012-4530 may allow unauthorized access to sensitive information stored in kernel memory.
- agent/type
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2012-4530
- collector/launchpad-cve
- source/Launchpad
- agent/weakness
- agent/severity
- agent/remedy
- collector/mitre-cve
- source/MITRE
- collector/usn-cve
- source/Ubuntu
- agent/references
- agent/first-publish-date
- agent/description
- agent/trending
- agent/last-modified-date
- agent/source
- agent/tags
- agent/event
- agent/author
- collector/nvd-index
- agent/software-canonical-lookup-request
- agent/softwarecombine
- collector/nvd-cve
- source/NVD
- collector/security-tracker-debian
- source/Debian
- vendor/linux
- canonical/linux kernel
- version/linux kernel/3.7.1
- version/linux kernel/3.0-rc1
- version/linux kernel/3.0-rc2
- version/linux kernel/3.0-rc3
- version/linux kernel/3.0-rc4
- version/linux kernel/3.0-rc5
- version/linux kernel/3.0-rc6
- version/linux kernel/3.0-rc7
- version/linux kernel/3.0.1
- version/linux kernel/3.0.2
- version/linux kernel/3.0.3
- version/linux kernel/3.0.4
- version/linux kernel/3.0.5
- version/linux kernel/3.0.6
- version/linux kernel/3.0.7
- version/linux kernel/3.0.8
- version/linux kernel/3.0.9
- version/linux kernel/3.0.10
- version/linux kernel/3.0.11
- version/linux kernel/3.0.12
- version/linux kernel/3.0.13
- version/linux kernel/3.0.14
- version/linux kernel/3.0.15
- version/linux kernel/3.0.16
- version/linux kernel/3.0.17
- version/linux kernel/3.0.18
- version/linux kernel/3.0.19
- version/linux kernel/3.0.20
- version/linux kernel/3.0.21
- version/linux kernel/3.0.22
- version/linux kernel/3.0.23
- version/linux kernel/3.0.24
- version/linux kernel/3.0.25
- version/linux kernel/3.0.26
- version/linux kernel/3.0.27
- version/linux kernel/3.0.28
- version/linux kernel/3.0.29
- version/linux kernel/3.0.30
- version/linux kernel/3.0.31
- version/linux kernel/3.0.32
- version/linux kernel/3.0.33
- version/linux kernel/3.0.34
- version/linux kernel/3.0.35
- version/linux kernel/3.0.36
- version/linux kernel/3.0.37
- version/linux kernel/3.0.38
- version/linux kernel/3.0.39
- version/linux kernel/3.0.40
- version/linux kernel/3.0.41
- version/linux kernel/3.0.42
- version/linux kernel/3.0.43
- version/linux kernel/3.0.44
- version/linux kernel/3.1
- version/linux kernel/3.1-rc1
- version/linux kernel/3.1-rc2
- version/linux kernel/3.1-rc3
- version/linux kernel/3.1-rc4
- version/linux kernel/3.1.1
- version/linux kernel/3.1.2
- version/linux kernel/3.1.3
- version/linux kernel/3.1.4
- version/linux kernel/3.1.5
- version/linux kernel/3.1.6
- version/linux kernel/3.1.7
- version/linux kernel/3.1.8
- version/linux kernel/3.1.9
- version/linux kernel/3.1.10
- version/linux kernel/3.2
- version/linux kernel/3.2-rc2
- version/linux kernel/3.2-rc3
- version/linux kernel/3.2-rc4
- version/linux kernel/3.2-rc5
- version/linux kernel/3.2-rc6
- version/linux kernel/3.2-rc7
- version/linux kernel/3.2.1
- version/linux kernel/3.2.2
- version/linux kernel/3.2.3
- version/linux kernel/3.2.4
- version/linux kernel/3.2.5
- version/linux kernel/3.2.6
- version/linux kernel/3.2.7
- version/linux kernel/3.2.8
- version/linux kernel/3.2.9
- version/linux kernel/3.2.10
- version/linux kernel/3.2.11
- version/linux kernel/3.2.12
- version/linux kernel/3.2.13
- version/linux kernel/3.2.14
- version/linux kernel/3.2.15
- version/linux kernel/3.2.16
- version/linux kernel/3.2.17
- version/linux kernel/3.2.18
- version/linux kernel/3.2.19
- version/linux kernel/3.2.20
- version/linux kernel/3.2.21
- version/linux kernel/3.2.22
- version/linux kernel/3.2.23
- version/linux kernel/3.2.24
- version/linux kernel/3.2.25
- version/linux kernel/3.2.26
- version/linux kernel/3.2.27
- version/linux kernel/3.2.28
- version/linux kernel/3.2.29
- version/linux kernel/3.2.30
- version/linux kernel/3.3
- version/linux kernel/3.3-rc1
- version/linux kernel/3.3-rc2
- version/linux kernel/3.3-rc3
- version/linux kernel/3.3-rc4
- version/linux kernel/3.3-rc5
- version/linux kernel/3.3-rc6
- version/linux kernel/3.3-rc7
- version/linux kernel/3.3.1
- version/linux kernel/3.3.2
- version/linux kernel/3.3.3
- version/linux kernel/3.3.4
- version/linux kernel/3.3.5
- version/linux kernel/3.3.6
- version/linux kernel/3.3.7
- version/linux kernel/3.3.8
- version/linux kernel/3.4
- version/linux kernel/3.4-rc1
- version/linux kernel/3.4-rc2
- version/linux kernel/3.4-rc3
- version/linux kernel/3.4-rc4
- version/linux kernel/3.4-rc5
- version/linux kernel/3.4-rc6
- version/linux kernel/3.4-rc7
- version/linux kernel/3.4.1
- version/linux kernel/3.4.2
- version/linux kernel/3.4.3
- version/linux kernel/3.4.4
- version/linux kernel/3.4.5
- version/linux kernel/3.4.6
- version/linux kernel/3.4.7
- version/linux kernel/3.4.8
- version/linux kernel/3.4.9
- version/linux kernel/3.4.10
- version/linux kernel/3.4.11
- version/linux kernel/3.4.12
- version/linux kernel/3.4.13
- version/linux kernel/3.4.14
- version/linux kernel/3.4.15
- version/linux kernel/3.4.16
- version/linux kernel/3.4.17
- version/linux kernel/3.4.18
- version/linux kernel/3.4.19
- version/linux kernel/3.4.20
- version/linux kernel/3.4.21
- version/linux kernel/3.4.22
- version/linux kernel/3.4.23
- version/linux kernel/3.4.24
- version/linux kernel/3.5.1
- version/linux kernel/3.5.2
- version/linux kernel/3.5.3
- version/linux kernel/3.5.4
- version/linux kernel/3.5.5
- version/linux kernel/3.5.6
- version/linux kernel/3.5.7
- version/linux kernel/3.6
- version/linux kernel/3.6.1
- version/linux kernel/3.6.2
- version/linux kernel/3.6.3
- version/linux kernel/3.6.4
- version/linux kernel/3.6.5
- version/linux kernel/3.6.6
- version/linux kernel/3.6.7
- version/linux kernel/3.6.8
- version/linux kernel/3.7
- package-manager/debian