CVE-2009-1897

N/A Unknown
Published: July 20, 2009 Modified: April 23, 2026
View on NVD

Description

The tun_chr_poll function in drivers/net/tun.c in the tun subsystem in the Linux kernel 2.6.30 and 2.6.30.1, when the -fno-delete-null-pointer-checks gcc option is omitted, allows local users to gain privileges via vectors involving a NULL pointer dereference and an mmap of /dev/net/tun, a different vulnerability than CVE-2009-1894.

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References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://archives.neohapsis.com/archives/fulldisclosure/2009-07/0241.html
Source: secalert@redhat.com
http://archives.neohapsis.com/archives/fulldisclosure/2009-07/0246.html
Source: secalert@redhat.com
http://article.gmane.org/gmane.linux.network/124939
Source: secalert@redhat.com
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3c8a9c63d5fd738c261bd0ceece04d9c8357ca13
Source: secalert@redhat.com
http://grsecurity.net/~spender/cheddar_bay.tgz
Source: secalert@redhat.com
Patch
http://isc.sans.org/diary.html?storyid=6820
Source: secalert@redhat.com
Exploit
http://lkml.org/lkml/2009/7/6/19
Source: secalert@redhat.com
Exploit
http://secunia.com/advisories/35839
Source: secalert@redhat.com
Vendor Advisory
http://www.openwall.com/lists/oss-security/2009/07/17/1
Source: secalert@redhat.com
http://www.vupen.com/english/advisories/2009/1925
Source: secalert@redhat.com
Patch Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=512284
Source: secalert@redhat.com
https://exchange.xforce.ibmcloud.com/vulnerabilities/51803
Source: secalert@redhat.com
https://www.redhat.com/en/blog/security-flaws-caused-compiler-optimizations
Source: secalert@redhat.com
http://archives.neohapsis.com/archives/fulldisclosure/2009-07/0241.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://archives.neohapsis.com/archives/fulldisclosure/2009-07/0246.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://article.gmane.org/gmane.linux.network/124939
Source: af854a3a-2127-422b-91ae-364da2661108
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3c8a9c63d5fd738c261bd0ceece04d9c8357ca13
Source: af854a3a-2127-422b-91ae-364da2661108
http://grsecurity.net/~spender/cheddar_bay.tgz
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
http://isc.sans.org/diary.html?storyid=6820
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit
http://lkml.org/lkml/2009/7/6/19
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit
http://secunia.com/advisories/35839
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://www.openwall.com/lists/oss-security/2009/07/17/1
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.vupen.com/english/advisories/2009/1925
Source: af854a3a-2127-422b-91ae-364da2661108
Patch Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=512284
Source: af854a3a-2127-422b-91ae-364da2661108
https://exchange.xforce.ibmcloud.com/vulnerabilities/51803
Source: af854a3a-2127-422b-91ae-364da2661108
https://www.redhat.com/en/blog/security-flaws-caused-compiler-optimizations
Source: af854a3a-2127-422b-91ae-364da2661108

26 reference(s) from NVD

Quick Stats

CVSS v3 Score
N/A / 10.0
EPSS (Exploit Probability)
1.7%
82th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-119

Affected Vendors

linux

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