REDHAT-BUG-1122472: Use After Free
First published: Wed Jul 23 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.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Red Hat Enterprise Linux | ||
| Red Hat Enterprise Linux |
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Reference Links
- https://lkml.org/lkml/2014/7/21/98
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1122482
- https://access.redhat.com/security/cve/CVE-2014-5045
- 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
- https://bugzilla.redhat.com/show_bug.cgi?id=1122472
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