PRIOn knowledge basePRION:CVE-2009-1897Null pointer dereference
6.4 Medium
AI Score
Confidence
Low
6.9 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
0.0004 Low
EPSS
Percentile
5.4%
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.
References
archives.neohapsis.com/archives/fulldisclosure/2009-07/0241.html
archives.neohapsis.com/archives/fulldisclosure/2009-07/0246.html
article.gmane.org/gmane.linux.network/124939
git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3c8a9c63d5fd738c261bd0ceece04d9c8357ca13
isc.sans.org/diary.html?storyid=6820
lkml.org/lkml/2009/7/6/19
secunia.com/advisories/35839
www.openwall.com/lists/oss-security/2009/07/17/1
www.vupen.com/english/advisories/2009/1925
bugzilla.redhat.com/show_bug.cgi?id=512284
exchange.xforce.ibmcloud.com/vulnerabilities/51803
grsecurity.net/~spender/cheddar_bay.tgz
www.redhat.com/en/blog/security-flaws-caused-compiler-optimizations
Related
6.4 Medium
AI Score
Confidence
Low
6.9 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
0.0004 Low
EPSS
Percentile
5.4%