CVE-2019-11478 — SACK can cause extensive memory use via fragmented resend queue
Jonathan Looney discovered that the TCP retransmission queue implementation in tcp_fragment in the Linux kernel could be fragmented when handling certain TCP Selective Acknowled…
Published: 2019-06-18 · CVSS: 5.3 · CVSS 3.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7