Buffer overflow in Linux Kernel
CVE-2009-1897
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v2 metric
CVSS v2 base score 6.9 (Medium). Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.015 (73.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
- Linux Kernel — versions 2.6.30, 2.6.30.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.vupen.com/english/advisories/2009/1925 (Patch, vdb-entry, Vendor Advisory)
- isc.sans.org/diary.html (Exploit)
- grsecurity.net/~spender/cheddar_bay.tgz (Patch)
- www.openwall.com/lists/oss-security/2009/07/17/1 (mailing-list)
- archives.neohapsis.com/archives/fulldisclosure/2009-07/0246.html (mailing-list)
- exchange.xforce.ibmcloud.com/vulnerabilities/51803 (vdb-entry)
- article.gmane.org/gmane.linux.network/124939 (mailing-list)
- secunia.com/advisories/35839 (Vendor Advisory, third-party-advisory)
- git.kernel.org/
- bugzilla.redhat.com/show_bug.cgi
Frequently asked questions
- What is CVE-2009-1897?
- CVE-2009-1897 is a vulnerability in Linux Kernel, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2009-07-20.
- Is CVE-2009-1897 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.