CVE-2019-11478

Priority
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.
Ubuntu-Description
Jonathan Looney discovered that the TCP retransmission queue implementation
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.
Assigned-to
tyhicks
Notes
tyhicksThis vulnerability results in exhausted CPU resources on kernels < 4.15
This vulnerability results in exhausted kernel memory on kernels >= 4.15
Package
Source: linux (LP Ubuntu Debian)
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:released (4.15.0-52.56)
Ubuntu 16.04 ESM:released (4.4.0-151.178)
Ubuntu 14.04 ESM:released (3.13.0-171.222)
Patches:
Introduced by
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Fixed by
f070ef2ac66716357066b683fb0baf55f8191a2e
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:released (4.15.0-1041.43)
Ubuntu 16.04 ESM:released (4.4.0-1085.96)
Ubuntu 14.04 ESM:released (4.4.0-1046.50)
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:DNE
Ubuntu 16.04 ESM:released (4.15.0-1041.43~16.04.1)
Ubuntu 14.04 ESM:DNE
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:released (4.18.0-1020.20~18.04.1)
Ubuntu 16.04 ESM:released (4.15.0-1047.51)
Ubuntu 14.04 ESM:released (4.15.0-1047.51~14.04.1)
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:released (4.18.0-1020.20~18.04.1)
Ubuntu 14.04 ESM:DNE
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:DNE
Ubuntu 14.04 ESM:DNE
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:DNE
Ubuntu 14.04 ESM:DNE
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:released (4.15.0-1034.36)
Ubuntu 16.04 ESM:released (4.15.0-1034.36~16.04.1)
Ubuntu 14.04 ESM:DNE
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:released (4.18.0-1013.14~18.04.1)
Ubuntu 14.04 ESM:DNE
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:DNE
Ubuntu 14.04 ESM:DNE
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:released (4.15.0-1034.36)
Ubuntu 14.04 ESM:DNE
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:not-affected (5.0.0-1011.11~18.04.1)
Ubuntu 14.04 ESM:DNE
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:DNE
Ubuntu 14.04 ESM:DNE
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:DNE
Ubuntu 14.04 ESM:DNE
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:released (4.18.0-22.23~18.04.1)
Ubuntu 16.04 ESM:released (4.15.0-52.56~16.04.1)
Ubuntu 14.04 ESM:DNE
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:released (5.0.0-17.18~18.04.1)
Ubuntu 16.04 ESM:released (4.15.0-52.56~16.04.1)
Ubuntu 14.04 ESM:DNE
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:released (4.15.0-1036.36)
Ubuntu 16.04 ESM:released (4.4.0-1048.55)
Ubuntu 14.04 ESM:DNE
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:DNE
Ubuntu 14.04 ESM:DNE
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:DNE
Ubuntu 14.04 ESM:DNE
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:DNE
Ubuntu 14.04 ESM:DNE
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:DNE
Ubuntu 14.04 ESM:DNE
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:DNE
Ubuntu 14.04 ESM:released (4.4.0-151.178~14.04.1)
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:DNE
Ubuntu 14.04 ESM:DNE
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:DNE
Ubuntu 14.04 ESM:DNE
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:DNE
Ubuntu 14.04 ESM:DNE
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:released (4.15.0-1043.48)
Ubuntu 14.04 ESM:DNE
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:released (4.15.0-1015.17)
Ubuntu 16.04 ESM:released (4.15.0-1015.17~16.04.1)
Ubuntu 14.04 ESM:DNE
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:released (4.15.0-1038.40)
Ubuntu 14.04 ESM:DNE
Patches:
Package
Upstream:released (5.2~rc6)
Ubuntu 18.04 LTS:released (4.15.0-1055.59)
Ubuntu 14.04 ESM:DNE
Patches:
More Information

Updated: 2022-04-13 13:37:05 UTC (commit f411bd370d482ef4385c4e751d121a4055fbc009)