CVE-2019-11683

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 7.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-05-02 · updated 2026-06-17
Weakness: CWE-787

Description

udp_gro_receive_segment in net/ipv4/udp_offload.c in the Linux kernel 5.x before 5.0.13 allows remote attackers to cause a denial of service (slab-out-of-bounds memory corruption) or possibly have unspecified other impact via UDP packets with a 0 payload, because of mishandling of padded packets, aka the "GRO packet of death" issue.

Affected products

Canonical Ubuntu Linux: 19.04
Linux kernel: from 5.0 before 5.0.13 — fixed in 5.0.13

How to fix

Upgrade to a fixed version: Linux kernel 5.0.13. Check the vendor advisory for mitigations.

References

http://www.openwall.com/lists/oss-security/2019/05/02/1
http://www.openwall.com/lists/oss-security/2019/05/05/4
http://www.securityfocus.com/bid/108142
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.13
https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=4dd2b82d5adfbe0b1587ccad7a8f76d826120f37
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7CYLTCIRTKUB4R2TLLUYPZLDQL44OBG/
https://security.netapp.com/advisory/ntap-20190517-0002/
https://support.f5.com/csp/article/K69550896
https://usn.ubuntu.com/3979-1/
https://www.spinics.net/lists/netdev/msg568315.html
http://www.openwall.com/lists/oss-security/2019/05/02/1
http://www.openwall.com/lists/oss-security/2019/05/05/4

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