CVE-2018-12232

Priority
Description
In net/socket.c in the Linux kernel through 4.17.1, there is a race
condition between fchownat and close in cases where they target the same
socket file descriptor, related to the sock_close and sockfs_setattr
functions. fchownat does not increment the file descriptor reference count,
which allows close to set the socket to NULL during fchownat's execution,
leading to a NULL pointer dereference and system crash.
Ubuntu-Description
Shankara Pailoor discovered that a race condition existed in the socket
handling code in the Linux kernel. A local attacker could use this to cause
a denial of service (system crash).
Notes
Package
Source: linux (LP Ubuntu Debian)
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):ignored (was needed ESM criteria)
Ubuntu 14.04 ESM (Trusty Tahr):not-affected
Ubuntu 16.04 LTS (Xenial Xerus):not-affected
Ubuntu 18.04 LTS (Bionic Beaver):released (4.15.0-33.36)
Patches:
Break-fix:86741ec25462e4c8cdce6df2f41ead05568c7d5e
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):not-affected
Ubuntu 16.04 LTS (Xenial Xerus):not-affected
Ubuntu 18.04 LTS (Bionic Beaver):released (4.15.0-1020.20)
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):not-affected (4.15.0-1023.24~14.04.1)
Ubuntu 16.04 LTS (Xenial Xerus):released (4.15.0-1022.22~16.04.1)
Ubuntu 18.04 LTS (Bionic Beaver):released (4.15.0-1022.23)
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.15.0-1022.23)
Ubuntu 18.04 LTS (Bionic Beaver):not-affected (4.18.0-1003.3~18.04.1)
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):ignored (was needed ESM criteria)
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE (trusty was ignored [abandoned])
Ubuntu 16.04 LTS (Xenial Xerus):ignored (abandoned)
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.15.0-1018.19~16.04.2)
Ubuntu 18.04 LTS (Bionic Beaver):released (4.15.0-1018.19)
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):ignored (was needs-triage now end-of-life)
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE (trusty was ignored [abandoned])
Ubuntu 16.04 LTS (Xenial Xerus):ignored (was needs-triage now end-of-life)
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE (trusty was ignored [abandoned])
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.15.0-33.36~16.04.1)
Ubuntu 18.04 LTS (Bionic Beaver):not-affected
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.15.0-33.36~16.04.1)
Ubuntu 18.04 LTS (Bionic Beaver):not-affected (4.18.0-11.12~18.04.1)
Product
linux-krillin:ignored (was needs-triage now end-of-life)
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected
Ubuntu 18.04 LTS (Bionic Beaver):released (4.15.0-1020.20)
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):ignored (was needed ESM criteria)
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE (trusty was ignored [out of standard support])
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE (trusty was ignored [out of standard support])
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE (trusty was ignored [out of standard support])
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):not-affected
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE (trusty was ignored [abandoned])
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE (trusty was ignored [abandoned])
Ubuntu 16.04 LTS (Xenial Xerus):ignored (abandoned)
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE (trusty was ignored [abandoned])
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):ignored (was needed now end-of-life)
Ubuntu 18.04 LTS (Bionic Beaver):released (4.15.0-1017.20)
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected
Ubuntu 18.04 LTS (Bionic Beaver):released (4.15.0-1021.23)
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected
Ubuntu 18.04 LTS (Bionic Beaver):not-affected
Product
linux-vegetahd:ignored (was needs-triage now end-of-life)
More Information

Updated: 2020-09-10 05:49:16 UTC (commit 81a23a978c4436cd99e1d040e9e73e9146876281)