CVE-2011-4326
The udp6_ufo_fragment function in net/ipv6/udp.c in the Linux kernel before 2.6.39, when a certain UDP Fragmentation Offload (UFO) configuration is enabled, allows remote attackers to cause a denial of service (system crash) by sending fragmented IPv6…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The udp6_ufo_fragment function in net/ipv6/udp.c in the Linux kernel before 2.6.39, when a certain UDP Fragmentation Offload (UFO) configuration is enabled, allows remote attackers to cause a denial of service (system crash) by sending fragmented IPv6 UDP packets to a bridge device.
- CVSS 2.0
- 7.1 HIGHAV:N/AC:M/Au:N/C:N/I:N/A:C
- EPSS
- 3.21% probability · 87th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-399
- Affected
- linux/linux kernel · avaya/96x1 ip deskphone firmware
- Source
- secalert@redhat.com
References
- http://downloads.avaya.com/css/P8/documents/100156038Third Party Advisory
- http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39Broken Link
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a9cf73ea7ff78f52662c8658d93c226effbbedde
- http://www.openwall.com/lists/oss-security/2011/11/21/10Mailing List
- http://www.securityfocus.com/bid/50751Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=682066Exploit, Issue Tracking, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=755584Issue Tracking, Third Party Advisory
- https://github.com/torvalds/linux/commit/a9cf73ea7ff78f52662c8658d93c226effbbeddePatch, Third Party Advisory
- http://downloads.avaya.com/css/P8/documents/100156038Third Party Advisory
- http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39Broken Link
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a9cf73ea7ff78f52662c8658d93c226effbbedde
- http://www.openwall.com/lists/oss-security/2011/11/21/10Mailing List
- http://www.securityfocus.com/bid/50751Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=682066Exploit, Issue Tracking, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=755584Issue Tracking, Third Party Advisory
- https://github.com/torvalds/linux/commit/a9cf73ea7ff78f52662c8658d93c226effbbeddePatch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.