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CVE-2009-2847

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Date: August 18, 2009

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.

Language: C

Severity Score

Related Resources (25)

http://www.vupen.com/english/advisories/2009/3316
http://www.exploit-db.com/exploits/9352
http://secunia.com/advisories/36759
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=0083fc2c50e6c5127c2802ad323adf8143ab7856
http://www.vmware.com/security/advisories/VMSA-2009-0016.html
http://secunia.com/advisories/36562
http://secunia.com/advisories/36136
http://www.securityfocus.com/archive/1/507985/100/0/threaded
http://secunia.com/advisories/36501
http://secunia.com/advisories/37105
http://www.redhat.com/support/errata/RHSA-2009-1438.html
http://www.openwall.com/lists/oss-security/2009/08/05/1
http://www.openwall.com/lists/oss-security/2009/08/26/2
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8405
https://bugzilla.redhat.com/show_bug.cgi?id=515392
https://nvd.nist.gov/vuln/detail/CVE-2009-2847
http://www.openwall.com/lists/oss-security/2009/08/04/1
http://secunia.com/advisories/37471
http://rhn.redhat.com/errata/RHSA-2009-1243.html
https://access.redhat.com/security/cve/CVE-2009-2847
http://www.ubuntu.com/usn/USN-852-1
https://people.canonical.com/~ubuntu-security/cve/CVE-2009-2847
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10637
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg01256.html
https://www.mend.io/vulnerability-database/CVE-2009-2847

Severity Score

Weakness Type (CWE)

Insufficient Information

NVD-CWE-noinfo

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): COMPLETE
Integrity (I): NONE
Availability (A): NONE
Additional information:

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