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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)…
High7.1EPSS 3.2%
- Published
- Updated
- Reserved
- Assigned by
- redhat
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.1 | AV:N/AC:M/Au:N/C:N/I:N/A:C |
- EPSS (exploitation in 30 days)
- 3.2% · top 12% of all CVEs (4 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Weakness
Affected products
n/a
- affected n/a
References (8)
- 50751 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- http://downloads.avaya.com/css/P8/documents/100156038 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20111121 Re: CVE Request -- kernel: wrong headroom check in udp6_ufo_fragment() (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://github.com/torvalds/linux/commit/a9cf73ea7ff78f52662c8658d93c226effbbedde (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=682066 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=755584 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a9cf73ea7ff78f52662c8658d93c226effbbedde (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2011-4326)Record last updated .