Description
The Linux kernel 2.6.0 through 2.6.30.4, and 2.4.4 through 2.4.37.4, does not initialize all function pointers for socket operations in proto_ops structures, which allows local users to trigger a NULL pointer dereference and gain privileges by using mmap to map page zero, placing arbitrary code on this page, and then invoking an unavailable operation, as demonstrated by the sendpage operation (sock_sendpage function) on a PF_PPPOX socket.
CVSS breakdown
CVSS 3.1
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected products
- Debian / debian_linux4.0 – 4.0
- Linux / Linux kernel2.4.4 – 2.4.37.5
- RedHat / enterprise_linux_desktop5.0 – 5.0
- RedHat / enterprise_linux_desktop4.0 – 4.0
- RedHat / enterprise_linux_eus5.3 – 5.3
- RedHat / enterprise_linux_eus4.8 – 4.8
- RedHat / enterprise_linux_server4.0 – 4.0
- RedHat / enterprise_linux_server5.0 – 5.0
- RedHat / enterprise_linux_server_aus5.3 – 5.3
- RedHat / enterprise_linux_workstation4.0 – 4.0
- RedHat / enterprise_linux_workstation5.0 – 5.0
- SUSE / linux_enterprise_real_time10 – 10
References
- MISChttp://www.redhat.com/support/errata/RHSA-2009-1233.html
- VENDOR_ADVISORYhttp://secunia.com/advisories/36278
- VENDOR_ADVISORYhttp://www.debian.org/security/2009/dsa-1865
- MISChttp://rhn.redhat.com/errata/RHSA-2009-1223.html
- MISChttp://www.securityfocus.com/archive/1/512019/100/0/threaded
- MISChttp://www.kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.37.5
- VENDOR_ADVISORYhttp://secunia.com/advisories/37298
- VENDOR_ADVISORYhttp://wiki.rpath.com/wiki/Advisories:rPSA-2009-0121
- VENDOR_ADVISORYhttp://secunia.com/advisories/36430
- VENDOR_ADVISORYhttp://secunia.com/advisories/37471
- MISChttp://rhn.redhat.com/errata/RHSA-2009-1222.html
- MISChttp://archives.neohapsis.com/archives/fulldisclosure/2009-08/0174.html
- MISChttps://bugzilla.redhat.com/show_bug.cgi?id=516949
- MISChttps://issues.rpath.com/browse/RPL-3103
- VENDOR_ADVISORYhttp://www.vmware.com/security/advisories/VMSA-2009-0016.html
- EXPLOIThttp://www.exploit-db.com/exploits/19933
- VENDOR_ADVISORYhttp://www.vupen.com/english/advisories/2009/2272
- MAILING_LISThttp://lists.opensuse.org/opensuse-security-announce/2009-09/msg00001.html
- MISChttp://www.securityfocus.com/archive/1/505751/100/0/threaded
- MISChttp://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=e694958388c50148389b0e9b9e9e8945cf0f1b98
- VENDOR_ADVISORYhttp://secunia.com/advisories/36289
- MISChttp://www.securityfocus.com/archive/1/507985/100/0/threaded
- VENDOR_ADVISORYhttp://secunia.com/advisories/36327
- MISChttp://support.avaya.com/css/P8/documents/100067254
- MISChttp://grsecurity.net/~spender/wunderbar_emporium.tgz
- MISChttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11591
- MISChttp://git.kernel.org/?p=linux/kernel/git/stable/linux-2.4.37.y.git%3Ba=commit%3Bh=c18d0fe535a73b219f960d1af3d0c264555a12e3
- MISChttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11526
- VENDOR_ADVISORYhttp://www.mandriva.com/security/advisories?name=MDVSA-2009:233
- EXPLOIThttp://www.exploit-db.com/exploits/9477
- MISChttp://blog.cr0.org/2009/08/linux-null-pointer-dereference-due-to.html
- MISChttp://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc6
- MISChttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8657
- MAILING_LISThttp://www.openwall.com/lists/oss-security/2009/08/14/1
- MISChttp://www.securityfocus.com/bid/36038
- MISChttp://www.securityfocus.com/archive/1/505912/100/0/threaded
- MISChttp://zenthought.org/content/file/android-root-2009-08-16-source
- VENDOR_ADVISORYhttp://www.vupen.com/english/advisories/2009/3316
- MISChttp://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.30.5