low
1.9
CWE
909
Advisory Published
CVE Published
Updated

CVE-2010-3876

First published: Thu Nov 04 2010(Updated: )

Description of problem: packet_getname_spkt() doesn't initialize all members of sa_data field of sockaddr struct if strlen(dev-&gt;name) &lt; 13. This structure is then copied to userland. It leads to leaking of contents of kernel stack memory. We have to fully fill sa_data with strncpy() instead of strlcpy(). The same with packet_getname(): it doesn't initialize sll_pkttype field of sockaddr_ll. Set it to zero. Reference: <a href="http://marc.info/?l=linux-netdev&amp;m=128854507220908&amp;w=2">http://marc.info/?l=linux-netdev&amp;m=128854507220908&amp;w=2</a> <a href="http://seclists.org/oss-sec/2010/q4/94">http://seclists.org/oss-sec/2010/q4/94</a> Acknowledgements: Red Hat would like to thank Vasiliy Kulikov of Openwall for reporting this issue.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
debian/linux-2.6
Linux Kernel<2.6.37
Linux Kernel=2.6.37
Linux Kernel=2.6.37-rc1
openSUSE=11.2
openSUSE=11.3
SUSE Linux Enterprise Desktop with Beagle=10-sp3
SUSE Linux Enterprise Real Time Extension=11-sp1
SUSE Linux Enterprise Server=9
SUSE Linux Enterprise Server=10-sp3
SUSE Linux Enterprise Software Development Kit=10-sp3
Debian GNU/Linux=5.0

Remedy

http://marc.info/?l=linux-netdev&m=128854507220908&w=2

Remedy

http://openwall.com/lists/oss-security/2010/11/02/10

Remedy

http://openwall.com/lists/oss-security/2010/11/02/7

Remedy

http://openwall.com/lists/oss-security/2010/11/02/9

Remedy

http://openwall.com/lists/oss-security/2010/11/04/5

Remedy

https://bugzilla.redhat.com/show_bug.cgi?id=649715

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2010-3876?

    CVE-2010-3876 has a medium severity rating due to its potential for leaking kernel stack memory contents.

  • How do I fix CVE-2010-3876?

    To fix CVE-2010-3876, ensure you update to a kernel version beyond 2.6.37 where the vulnerability has been patched.

  • Which systems are affected by CVE-2010-3876?

    CVE-2010-3876 affects various versions of the Linux kernel and specific distributions such as Debian and openSUSE.

  • What can happen if CVE-2010-3876 is exploited?

    Exploitation of CVE-2010-3876 could allow unauthorized access to sensitive information from kernel memory.

  • Is CVE-2010-3876 a remote code execution vulnerability?

    No, CVE-2010-3876 is not a remote code execution vulnerability but rather a local information disclosure vulnerability.

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