CVE-2020-16119

Priority
Description
DCCP CCID structure use-after-free -- reusing a DCCP socket with an
attached dccps_hc_tx_ccid as a listener, it will be used after being
released, leading to denial of service (system crash) or possibly
code execution.
Ubuntu-Description
Hador Manor discovered that the DCCP protocol implementation in the Linux
kernel improperly handled socket reuse, leading to a use-after-free
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code.
Mitigation
Blacklist the dccp ipv[46] autoloading aliases by adding the following
lines to /etc/modprobe.d/blacklist-dccp.conf:
alias net-pf-2-proto-0-type-6 off
alias net-pf-2-proto-33-type-6 off
alias net-pf-10-proto-0-type-6 off
alias net-pf-10-proto-33-type-6 off
Assigned-to
cascardo
Notes
Package
Source: linux (LP Ubuntu Debian)
Upstream:needs-triage
Ubuntu 12.04 ESM (Precise Pangolin):released (3.2.0-149.196)
Ubuntu 14.04 ESM (Trusty Tahr):released (3.13.0-182.233)
Ubuntu 16.04 LTS (Xenial Xerus):released (4.4.0-193.224)
Ubuntu 18.04 LTS (Bionic Beaver):released (4.15.0-121.123)
Ubuntu 20.04 LTS (Focal Fossa):released (5.4.0-51.56)
Ubuntu 20.10 (Groovy Gorilla):needs-triage
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Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):released (4.4.0-1081.85)
Ubuntu 16.04 LTS (Xenial Xerus):released (4.4.0-1117.131)
Ubuntu 18.04 LTS (Bionic Beaver):released (4.15.0-1086.91)
Ubuntu 20.04 LTS (Focal Fossa):released (5.4.0-1028.29)
Ubuntu 20.10 (Groovy Gorilla):needs-triage
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Ubuntu 16.04 LTS (Xenial Xerus):released (4.15.0-1098.109~16.04.1)
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Ubuntu 18.04 LTS (Bionic Beaver):released (5.3.0-68.63)
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Ubuntu 18.04 LTS (Bionic Beaver):released (5.4.0-51.56~18.04.1)
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Ubuntu 12.04 ESM (Precise Pangolin):DNE
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Ubuntu 16.04 LTS (Xenial Xerus):released (4.4.0-1082.91)
Ubuntu 18.04 LTS (Bionic Beaver):released (4.15.0-1077.79)
Ubuntu 20.04 LTS (Focal Fossa):released (5.4.0-1026.27)
Ubuntu 20.10 (Groovy Gorilla):needs-triage
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Ubuntu 12.04 ESM (Precise Pangolin):released (3.13.0-182.233~12.04.1)
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Ubuntu 18.04 LTS (Bionic Beaver):released (4.15.0-1057.62)
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More Information

Updated: 2020-10-14 04:17:03 UTC (commit 3e5f982fd684842501650bff46bc6469da86ed5b)