CVE-2014-2568: Use After Free
First published: Tue Mar 18 2014(Updated: )
An information leak flaw was found in the way skb_zerocopy() copied skbs that are backed by userspace buffers (for example vhost-net and recent xen netback). Once the source skb is consumed, ubuf destructor is called and potentially releases the corresponding userspace buffers, which can then for example be repurposed, while the destination skb is still pointing to the them. Upstream patch: <a href="https://lkml.org/lkml/2014/3/20/421">https://lkml.org/lkml/2014/3/20/421</a>
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <0:3.10.0-123.4.2.el7 | 0:3.10.0-123.4.2.el7 |
| Linux Linux kernel | >=3.0<=3.13.6 | |
| Canonical Ubuntu Linux | =14.04 | |
| 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 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2014-2568 https://nvd.nist.gov/vuln/detail/CVE-2014-2568
- https://bugzilla.redhat.com/show_bug.cgi?id=1079012
- https://access.redhat.com/errata/RHSA-2014:0786
- https://access.redhat.com/security/cve/CVE-2014-2568
- http://seclists.org/oss-sec/2014/q1/627
- http://secunia.com/advisories/59599
- http://www.openwall.com/lists/oss-security/2014/03/20/16
- http://www.securityfocus.com/bid/66348
- http://www.ubuntu.com/usn/USN-2240-1
- https://exchange.xforce.ibmcloud.com/vulnerabilities/91922
- https://lkml.org/lkml/2014/3/20/421
- https://launchpad.net/bugs/cve/CVE-2014-2568
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1079013
- http://seclists.org/oss-sec/2014/q1/630
- https://git.kernel.org/cgit/linux/kernel/git/davem/net.git/commit/?id=36d5fe6a000790f56039afe26834265db0a3ad4c
- https://rhn.redhat.com/errata/RHSA-2014-0786.html
- https://security-tracker.debian.org/tracker/CVE-2014-2568
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2568
- https://nvd.nist.gov/vuln/detail/CVE-2014-2568
- https://ubuntu.com/security/CVE-2014-2568
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