CVE-2013-7421
First published: Mon Mar 04 2013(Updated: )
A flaw was found in the way the Linux kernel's Crypto subsystem handled automatic loading of kernel modules. A local user could use this flaw to load any installed kernel module, and thus increase the attack surface of the running kernel.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <0:3.10.0-327.rt56.204.el7 | 0:3.10.0-327.rt56.204.el7 |
| redhat/kernel | <0:3.10.0-327.el7 | 0:3.10.0-327.el7 |
| redhat/kernel-rt | <1:3.10.0-327.rt56.170.el6 | 1:3.10.0-327.rt56.170.el6 |
| Ubuntu Linux | =12.04 | |
| Ubuntu Linux | =14.04 | |
| Ubuntu Linux | =14.10 | |
| Debian | =7.0 | |
| Debian | =8.0 | |
| Linux kernel | <3.18.5 | |
| Oracle Linux | =5 | |
| Oracle Linux | =6 | |
| Oracle Linux | =7 | |
| Ubuntu | =12.04 | |
| Ubuntu | =14.04 | |
| Ubuntu | =14.10 | |
| Linux Kernel | <3.18.5 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.17-1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://www.cve.org/CVERecord?id=CVE-2013-7421 https://nvd.nist.gov/vuln/detail/CVE-2013-7421
- https://bugzilla.redhat.com/show_bug.cgi?id=1185469
- https://access.redhat.com/errata/RHSA-2015:2411
- https://access.redhat.com/errata/RHSA-2015:2152
- https://access.redhat.com/errata/RHSA-2016:0068
- https://access.redhat.com/security/cve/CVE-2013-7421
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5d26a105b5a73e5635eae0629b42fa0a90e07b7b
- http://rhn.redhat.com/errata/RHSA-2016-0068.html
- http://www.debian.org/security/2015/dsa-3170
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.5
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:057
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:058
- http://www.openwall.com/lists/oss-security/2015/01/24/4
- 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/72322
- http://www.ubuntu.com/usn/USN-2513-1
- http://www.ubuntu.com/usn/USN-2514-1
- http://www.ubuntu.com/usn/USN-2543-1
- http://www.ubuntu.com/usn/USN-2544-1
- http://www.ubuntu.com/usn/USN-2545-1
- http://www.ubuntu.com/usn/USN-2546-1
- https://github.com/torvalds/linux/commit/5d26a105b5a73e5635eae0629b42fa0a90e07b7b
- https://lkml.org/lkml/2013/3/4/70
- https://plus.google.com/+MathiasKrause/posts/PqFCo4bfrWu
- https://launchpad.net/bugs/cve/CVE-2013-7421
- http://seclists.org/oss-sec/2015/q1/229
- https://git.kernel.org/linus/5d26a105b5a7
- https://git.kernel.org/linus/4943ba16bbc2
- https://git.kernel.org/linus/3e14dcf7cb80
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1185469#c0
- https://access.redhat.com/security/updates/classification/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1190934
- https://rhn.redhat.com/errata/RHSA-2015-2411.html
- https://rhn.redhat.com/errata/RHSA-2015-2152.html
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=5d26a105b5a73e5635eae0629b42fa0a90e07b7b
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5d26a105b5a7
- https://security-tracker.debian.org/tracker/CVE-2013-7421
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-7421
- https://nvd.nist.gov/vuln/detail/CVE-2013-7421
- https://ubuntu.com/security/CVE-2013-7421
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is the severity of CVE-2013-7421?
The severity of CVE-2013-7421 is classified as important as it allows local users to potentially load unauthorized kernel modules.
How do I fix CVE-2013-7421?
To fix CVE-2013-7421, update your Linux kernel to a version that includes the security patches addressing this vulnerability.
Which systems are affected by CVE-2013-7421?
CVE-2013-7421 affects several Linux distributions, including specific versions of the Red Hat kernel, Ubuntu, Debian, and Oracle Linux.
What types of attacks can CVE-2013-7421 enable?
CVE-2013-7421 can enable local users to load kernel modules, thereby increasing the attack surface and potentially allowing privilege escalation.
Is there a known exploit for CVE-2013-7421?
As of now, there are no widely known exploits published for CVE-2013-7421, but users are still advised to apply security updates.
- collector/redhat-cve
- agent/type
- collector/launchpad-cve
- source/Launchpad
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2013-7421
- agent/first-publish-date
- agent/weakness
- agent/severity
- collector/usn-cve
- source/Ubuntu
- agent/references
- agent/remedy
- agent/trending
- agent/last-modified-date
- agent/source
- agent/author
- collector/nvd-cve
- source/NVD
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- agent/tags
- agent/softwarecombine
- agent/description
- agent/event
- collector/nvd-index
- collector/security-tracker-debian
- source/Debian
- package-manager/redhat
- vendor/canonical
- canonical/ubuntu linux
- version/ubuntu linux/12.04
- version/ubuntu linux/14.04
- version/ubuntu linux/14.10
- vendor/debian
- canonical/debian
- version/debian/7.0
- version/debian/8.0
- vendor/linux
- canonical/linux kernel
- vendor/oracle
- canonical/oracle linux
- version/oracle linux/5
- version/oracle linux/6
- version/oracle linux/7
- canonical/ubuntu
- version/ubuntu/12.04
- version/ubuntu/14.04
- version/ubuntu/14.10
- package-manager/debian