VULNERABILITY INTELLIGENCE
CVE-2019-11478
CVSS score5.3 MEDIUM
EPSS probability94.69%
CISA KEVNot currently listed
Published2019-06-19
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Description
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.
Weakness classification
- CWE-400: Uncontrolled Resource Consumption
- CWE-770: Allocation of Resources Without Limits or Throttling