CVE-2009-2847

Public Exploit

Description

The do_sigaltstack function in kernel/signal.c in Linux kernel 2.4 through 2.4.37 and 2.6 before 2.6.31-rc5, when running on 64-bit systems, does not clear certain padding bytes from a structure, which allows local users to obtain sensitive information from the kernel stack via the sigaltstack function.

4.9

CVSS

Severity: Medium

CVSS 2.0 •

EPSS 0.18%

Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com

Affected: n/a n/a

References

Link	Tags
http://www.openwall.com/lists/oss-security/2009/08/04/1	patch mailing list
https://bugzilla.redhat.com/show_bug.cgi?id=515392	patch
http://secunia.com/advisories/37471	third party advisory
http://www.ubuntu.com/usn/USN-852-1	vendor advisory
http://rhn.redhat.com/errata/RHSA-2009-1243.html	vendor advisory
http://secunia.com/advisories/36759	third party advisory
http://www.vmware.com/security/advisories/VMSA-2009-0016.html
http://www.openwall.com/lists/oss-security/2009/08/26/2	mailing list
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10637	signature vdb entry
http://www.securityfocus.com/archive/1/507985/100/0/threaded	mailing list
http://secunia.com/advisories/36562	third party advisory
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg01256.html	vendor advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=0083fc2c50e6c5127c2802ad323adf8143ab7856
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8405	signature vdb entry
http://www.exploit-db.com/exploits/9352	exploit
http://secunia.com/advisories/36501	third party advisory
http://www.openwall.com/lists/oss-security/2009/08/05/1	patch mailing list
http://www.redhat.com/support/errata/RHSA-2009-1438.html	vendor advisory
http://www.vupen.com/english/advisories/2009/3316	vdb entry
http://secunia.com/advisories/37105	third party advisory
http://secunia.com/advisories/36136	third party advisory

Frequently Asked Questions

What is the severity of CVE-2009-2847?: CVE-2009-2847 has been scored as a medium severity vulnerability.
How to fix CVE-2009-2847?: To fix CVE-2009-2847, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2009-2847 being actively exploited in the wild?: It is possible that CVE-2009-2847 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.