What is CVE-2009-2847?

CVE-2009-2847 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.9 out of 10. CVE-2009-2847 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2009-2847?

CVE-2009-2847 has a CVSS score of 4.9 out of 10, rated Medium severity. The vector string is AV:L/AC:L/Au:N/C:C/I:N/A:N.

Is there a patch available for CVE-2009-2847?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2009-2847 patch availability.

Is CVE-2009-2847 actively exploited?

CVE-2009-2847 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2009-2847

Medium

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.

Package Linux Kernel

Published 2009-08-18

Last modified 2026-04-23

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

4.9

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

User Interaction

Scope

Confidentiality

Low

Integrity

None

Availability

None

Vector string

AV:L/AC:L/Au:N/C:C/I:N/A:N

References

21 total

Openwall
http://www.openwall.com/lists/oss-security/2009/08/04/1

Patch
Openwall
http://www.openwall.com/lists/oss-security/2009/08/05/1

Patch
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=515392

Patch
Kernel Git
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=0083fc2c50e6c5127c2802ad323adf8143ab7856
Red Hat
http://rhn.redhat.com/errata/RHSA-2009-1243.html

Showing 5 of 21 references View all on NVD

Details

CVE ID CVE-2009-2847

Severity Medium

CVSS score 4.9 / 10

CVSS version 2.0

Published 2009-08-18

Modified 2026-04-23

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2009-2847?

CVE-2009-2847 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.9 out of 10 . CVE-2009-2847 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2009-2847?

CVE-2009-2847 has a CVSS score of 4.9 out of 10, rated Medium severity (CVSS 2.0). The vector string is AV:L/AC:L/Au:N/C:C/I:N/A:N.
Is there a patch available for CVE-2009-2847?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2009-2847 patch availability.
Is CVE-2009-2847 actively exploited?

No. CVE-2009-2847 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.