CVE-2019-11478
Published:June 18, 2019
Updated:May 17, 2026
Jonathan Looney discovered that the TCP retransmission queue implementation in tcp_fragment in the Linux kernel could be fragmented when handling certain TCP Selective Acknowledgment (SACK) sequences. A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commit f070ef2ac66716357066b683fb0baf55f8191a2e.
Affected Packages
linux (ARCHLINUX):
Affected version(s) =5.1.10.arch1-1 <5.1.11.arch1-1Fix Suggestion:
Update to version 5.1.11.arch1-1linux-lts (ARCHLINUX):
Affected version(s) =4.19.51-1 <4.19.51-2Fix Suggestion:
Update to version 4.19.51-2linux-hardened (ARCHLINUX):
Affected version(s) =5.1.10.a-1 <5.1.10.a-2Fix Suggestion:
Update to version 5.1.10.a-2linux-zen (ARCHLINUX):
Affected version(s) =5.1.10.zen1-1 <5.1.11.zen1-1Fix Suggestion:
Update to version 5.1.11.zen1-1linux-yocto (YOCTO):
Affected version(s) >=4.8 <4.8.26+gitAUTOINC+1c60e003c7_27efc3ba68Fix Suggestion:
Update to version 4.8.26+gitAUTOINC+1c60e003c7_27efc3ba68Related Resources (30)
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Contact UsCVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
EPSS
Base Score:
29.76