CVE-2016-9604
First published: Thu Oct 27 2016(Updated: )
It was discovered in the Linux kernel before 4.11-rc8 that root can gain direct access to an internal keyring, such as '.dns_resolver' in RHEL-7 or '.builtin_trusted_keys' upstream, by joining it as its session keyring. This allows root to bypass module signature verification by adding a new public key of its own devising to the keyring.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | <=4.11 | |
| Linux Linux kernel | =4.11-rc1 | |
| Linux Linux kernel | =4.11-rc2 | |
| Linux Linux kernel | =4.11-rc3 | |
| Linux Linux kernel | =4.11-rc4 | |
| Linux Linux kernel | =4.11-rc5 | |
| Linux Linux kernel | =4.11-rc6 | |
| Linux Linux kernel | =4.11-rc7 | |
| redhat/kernel | <4.11 | 4.11 |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.11.10-1 6.12.5-1 |
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
- http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-9604.html
- http://www.securityfocus.com/bid/102135
- https://access.redhat.com/errata/RHSA-2017:1842
- https://access.redhat.com/errata/RHSA-2017:2077
- https://access.redhat.com/errata/RHSA-2017:2669
- https://bugzilla.novell.com/show_bug.cgi?id=1035576
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9604
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ee8f844e3c5a73b999edf733df1c529d6503ec2f
- https://launchpad.net/bugs/cve/CVE-2016-9604
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1446566
- https://bugzilla.redhat.com/show_bug.cgi?id=1389433
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9604
- https://nvd.nist.gov/vuln/detail/CVE-2016-9604
- https://security-tracker.debian.org/tracker/CVE-2016-9604
- https://ubuntu.com/security/CVE-2016-9604
- https://git.kernel.org/linus/ee8f844e3c5a73b999edf733df1c529d6503ec2f
Frequently Asked Questions
What is the severity of CVE-2016-9604?
The severity of CVE-2016-9604 is low.
How can an attacker exploit CVE-2016-9604?
An attacker can exploit CVE-2016-9604 by joining an internal keyring as its session keyring.
Which Linux kernels are affected by CVE-2016-9604?
Linux kernels before 4.11-rc8 are affected by CVE-2016-9604.
Is there a fix for CVE-2016-9604?
Yes, updating the Linux kernel to version 4.11-rc8 or later will fix CVE-2016-9604.
Where can I find more information about CVE-2016-9604?
You can find more information about CVE-2016-9604 in the references provided: http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-9604.html, https://bugzilla.novell.com/show_bug.cgi?id=1035576, https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9604
- collector/nvd-index
- agent/weakness
- agent/type
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- agent/author
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2016-9604
- agent/software-canonical-lookup
- collector/mitre-cve
- source/MITRE
- agent/tags
- collector/usn-cve
- source/Ubuntu
- agent/description
- agent/event
- collector/nvd-cve
- source/NVD
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- agent/severity
- agent/last-modified-date
- agent/references
- agent/remedy
- agent/trending
- vendor/linux
- canonical/linux linux kernel
- version/linux linux kernel/4.11
- version/linux linux kernel/4.11-rc1
- version/linux linux kernel/4.11-rc2
- version/linux linux kernel/4.11-rc3
- version/linux linux kernel/4.11-rc4
- version/linux linux kernel/4.11-rc5
- version/linux linux kernel/4.11-rc6
- version/linux linux kernel/4.11-rc7
- package-manager/redhat
- package-manager/debian