CVE-2014-5045: Use After Free
First published: Sun Jul 20 2014(Updated: )
A flaw was found in the way reference counting was handled in the Linux kernel's VFS subsystem when unmount on symlink was performed. On Red Hat Enterprise Linux 6 an unprivileged local user could use this flaw to cause OOM conditions leading to denial of service or, potentially, trigger use-after-free error. On Red Hat Enterprise Linux 7 a privileged local user with CAP_SYS_ADMIN capability (also in a container) could use this flaw to cause OOM conditions leading to denial of service or, potentially, trigger use-after-free error. Acknowledgements: Red Hat would like to thank Vasily Averin of Parallels for reporting this issue.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <0:2.6.32-504.el6 | 0:2.6.32-504.el6 |
| redhat/kernel | <0:2.6.32-431.46.2.el6 | 0:2.6.32-431.46.2.el6 |
| redhat/kernel | <0:3.10.0-123.13.1.el7 | 0:3.10.0-123.13.1.el7 |
| Linux Linux kernel | <3.15.8 | |
| Redhat Enterprise Linux Eus | =6.5 | |
| Redhat Enterprise Linux Server Aus | =6.5 | |
| Redhat Enterprise Linux Server Tus | =6.5 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.112-1 6.11.5-1 6.11.7-1 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2014-5045 https://nvd.nist.gov/vuln/detail/CVE-2014-5045
- https://bugzilla.redhat.com/show_bug.cgi?id=1122472
- https://access.redhat.com/errata/RHSA-2014:1392
- https://access.redhat.com/errata/RHSA-2015:0062
- https://access.redhat.com/errata/RHSA-2014:1971
- https://access.redhat.com/security/cve/CVE-2014-5045
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=295dc39d941dc2ae53d5c170365af4c9d5c16212
- http://rhn.redhat.com/errata/RHSA-2015-0062.html
- http://secunia.com/advisories/60353
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.15.8
- http://www.openwall.com/lists/oss-security/2014/07/24/2
- http://www.securityfocus.com/bid/68862
- https://github.com/torvalds/linux/commit/295dc39d941dc2ae53d5c170365af4c9d5c16212
- https://launchpad.net/bugs/cve/CVE-2014-5045
- https://lkml.org/lkml/2014/7/21/98
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1122482
- https://rhn.redhat.com/errata/RHSA-2014-1392.html
- https://rhn.redhat.com/errata/RHSA-2014-1971.html
- https://rhn.redhat.com/errata/RHSA-2015-0062.html
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=295dc39d941dc2ae53d5c170365af4c9d5c16212
- https://security-tracker.debian.org/tracker/CVE-2014-5045
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-5045
- https://nvd.nist.gov/vuln/detail/CVE-2014-5045
- https://ubuntu.com/security/CVE-2014-5045
Parent vulnerabilities
(Appears in the following advisories)
- collector/redhat-cve
- collector/nvd-index
- agent/type
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2014-5045
- agent/author
- collector/nvd-cve
- source/NVD
- agent/software-canonical-lookup
- agent/severity
- agent/weakness
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- collector/usn-cve
- source/Ubuntu
- agent/references
- agent/remedy
- agent/description
- agent/softwarecombine
- agent/tags
- agent/event
- collector/security-tracker-debian
- source/Debian
- package-manager/redhat
- vendor/linux
- canonical/linux linux kernel
- vendor/redhat
- canonical/redhat enterprise linux eus
- version/redhat enterprise linux eus/6.5
- canonical/redhat enterprise linux server aus
- version/redhat enterprise linux server aus/6.5
- canonical/redhat enterprise linux server tus
- version/redhat enterprise linux server tus/6.5
- package-manager/debian