CVE-2009-2698 EXPLOIT
7.8
HIGH · CVSS 3.1 · EPSS 7.1% (pctl 94)
Patch early
A public exploit exists.
Description
The udp_sendmsg function in the UDP implementation in (1) net/ipv4/udp.c and (2) net/ipv6/udp.c in the Linux kernel before 2.6.19 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving the MSG_MORE flag and a UDP socket.
Scoring
| CVSS | 7.8 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 7.12% — more likely to be exploited than 94% of all CVEs |
| Weakness | CWE-476 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2009-08-27 |
| Last modified | 2026-06-16 |
Affected (12)
| Vendor | Product |
|---|---|
| canonical | ubuntu linux |
| fedoraproject | fedora |
| linux | linux kernel |
| redhat | enterprise linux desktop |
| redhat | enterprise linux eus |
| redhat | enterprise linux server |
| redhat | enterprise linux server aus |
| redhat | enterprise linux workstation |
| suse | linux enterprise desktop |
| suse | linux enterprise server |
| vmware | esxi |
| vmware | vcenter server |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Linux Kernel < 2.6.19 (x86/x64) - 'udp_sendmsg' Local Privilege Escalation (2) | 2009-09-02 |
| exploit-db | Linux Kernel < 2.6.19 (Debian 4) - 'udp_sendmsg' Local Privilege Escalation (3) | 2009-09-02 |
| exploit-db | Linux Kernel 2.6 < 2.6.19 (White Box 4 / CentOS 4.4/4.5 / Fedora Core 4/5/6 x86) - 'ip_append_data()' Ring0 Privilege Escalation (1) | 2009-08-31 |
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1e0c14f49d6b393179f423abbac47f85618d3d46
- http://lists.opensuse.org/opensuse-security-announce/2009-08/msg00008.html
- http://rhn.redhat.com/errata/RHSA-2009-1222.html
- http://rhn.redhat.com/errata/RHSA-2009-1223.html
- http://secunia.com/advisories/23073
- http://secunia.com/advisories/36430
- http://secunia.com/advisories/36510
- http://secunia.com/advisories/37105
- http://secunia.com/advisories/37298
- http://secunia.com/advisories/37471
- http://support.avaya.com/css/P8/documents/100067254
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.19
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:051
- http://www.openwall.com/lists/oss-security/2009/08/25/1
- http://www.redhat.com/support/errata/RHSA-2009-1233.html
- http://www.securityfocus.com/archive/1/507985/100/0/threaded
- http://www.securityfocus.com/archive/1/512019/100/0/threaded
- http://www.securityfocus.com/bid/36108
- http://www.securitytracker.com/id?1022761
- http://www.ubuntu.com/usn/USN-852-1
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