CVE-2011-4326
HIGH · CVSS 7.1EPSS 3.2%EU EUVD
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.
Key facts
- CVSS score
- 7.1 (v2.0)
- Severity
- HIGH
- CVSS vector
AV:N/AC:M/Au:N/C:N/I:N/A:C- Weakness (CWE)
- CWE-399
- EPSS score
- 3.2% (88th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2011-4258)
- Published
- May 17, 2012
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2011-4258 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- avaya / 96x1 ip deskphone
- avaya / 96x1 ip deskphone firmware
- linux / linux kernel
References
- http://downloads.avaya.com/css/P8/documents/100156038(Third Party Advisory)
- http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39(Broken 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/2011/11/21/10(Mailing List)
- http://www.securityfocus.com/bid/50751(Third Party Advisory, VDB Entry)
- https://bugzilla.redhat.com/show_bug.cgi?id=682066(Exploit, Issue Tracking, Third Party Advisory)
- https://bugzilla.redhat.com/show_bug.cgi?id=755584(Issue Tracking, Third Party Advisory)
- https://github.com/torvalds/linux/commit/a9cf73ea7ff78f52662c8658d93c226effbbedde(Patch, Third Party Advisory)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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