Red Hat Bugzilla – Bug 782681
CVE-2012-0056 kernel: proc: /proc/<pid>/mem mem_write insufficient permission checking [fedora-all]
Last modified: 2012-01-24 14:58:00 EST
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected Fedora
For comments that are specific to the vulnerability please use bugs filed
against "Security Response" product referenced in the "Blocks" field.
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bug IDs of this bug's parent bugs filed against the "Security Response"
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in the RPM changelog when available.
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Please note: this issue affects multiple supported versions of Fedora.
Only one tracking bug has been filed; please ensure that it is only closed
when all affected versions are fixed.
Reproducers, if any, will remain confidential and never be made public, unless done so by the security team.
[bug automatically created by: add-tracking-bugs]
This is fixed by upstream commit e268337dfe26dfc7efd422a804dbb27977a3cccc. I'll backport that to all 3 branches later today.
Note: Fedora defaults to /proc/sys/kernel/randomize_va_space = 2, which makes this more difficult to exploit.
Committed to all branches.
kernel-3.2.1-3.fc16 has been submitted as an update for Fedora 16.
kernel-22.214.171.124-3.fc15 has been submitted as an update for Fedora 15.
Petr reported that the publicly available exploit works on Fedora using gpasswd.
* should fix your issue,
* was pushed to the Fedora 15 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing kernel-126.96.36.199-3.fc15'
as soon as you are able to, then reboot.
Please go to the following url:
then log in and leave karma (feedback).
kernel-3.2.1-3.fc16 has been pushed to the Fedora 16 stable repository. If problems still persist, please make note of it in this bug report.
(In reply to comment #5)
> Petr reported that the publicly available exploit works on Fedora using
Indeed. That same exploit does not result in a root shell with the updates mentioned in comment #3 and comment #4
kernel-188.8.131.52-3.fc15 has been pushed to the Fedora 15 stable repository. If problems still persist, please make note of it in this bug report.