CVE-2018-18445
Published: 17 October 2018
In the Linux kernel 4.14.x, 4.15.x, 4.16.x, 4.17.x, and 4.18.x before 4.18.13, faulty computation of numeric bounds in the BPF verifier permits out-of-bounds memory accesses because adjust_scalar_min_max_vals in kernel/bpf/verifier.c mishandles 32-bit right shifts.
From the Ubuntu Security Team
It was discovered that the BPF verifier in the Linux kernel did not correctly compute numeric bounds in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
linux Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-43.46)
|
| cosmic |
Released
(4.18.0-12.13)
|
|
| trusty |
Not vulnerable
(3.11.0-12.19)
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Not vulnerable
(4.2.0-16.19)
|
|
|
Patches: Introduced by 468f6eafa6c44cb2c5d8aad35e12f06c240a812a |
||
|
linux-aws Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1031.33)
|
| cosmic |
Released
(4.18.0-1006.7)
|
|
| trusty |
Not vulnerable
(4.4.0-1002.2)
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Not vulnerable
(4.4.0-1001.10)
|
|
|
linux-aws-hwe Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Released
(4.15.0-1031.33~16.04.1)
|
|
|
linux-azure Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1036.38)
|
| cosmic |
Released
(4.18.0-1006.6)
|
|
| trusty |
Released
(4.15.0-1036.38~14.04.2)
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Released
(4.15.0-1036.38~16.04.1)
|
|
|
linux-azure-edge Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1036.38)
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Released
(4.15.0-1036.38~16.04.1)
|
|
|
linux-euclid Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Not vulnerable
(4.4.0-9019.20)
|
|
|
linux-flo Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Ignored
(abandoned)
|
|
|
linux-gcp Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1026.27)
|
| cosmic |
Released
(4.18.0-1004.5)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Released
(4.15.0-1026.27~16.04.1)
|
|
|
linux-gcp-edge Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.18.0-1004.5~18.04.1)
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Does not exist
|
|
|
linux-gke Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Ignored
(end of standard support)
|
|
|
linux-goldfish Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Ignored
(end of life)
|
|
|
linux-grouper Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Does not exist
|
|
|
linux-hwe Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.18.0-13.14~18.04.1)
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Released
(4.15.0-43.46~16.04.1)
|
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.0.0-8.9~18.04.1)
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Released
(4.15.0-43.46~16.04.1)
|
|
|
linux-kvm Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1028.28)
|
| cosmic |
Released
(4.18.0-1005.5)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Not vulnerable
(4.4.0-1004.9)
|
|
|
linux-lts-trusty Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-utopic Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [end of standard support])
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [end of standard support])
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-wily Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [end of standard support])
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Not vulnerable
(4.4.0-13.29~14.04.1)
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Does not exist
|
|
|
linux-maguro Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Does not exist
|
|
|
linux-mako Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Ignored
(abandoned)
|
|
|
linux-manta Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Does not exist
|
|
|
linux-oem Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1030.35)
|
| cosmic |
Released
(4.15.0-1030.35)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Ignored
(end of standard support, was needs-triage)
|
|
|
linux-oracle Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.15.0-1007.9)
|
| cosmic |
Not vulnerable
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Not vulnerable
(4.15.0-1007.9~16.04.1)
|
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1030.32)
|
| cosmic |
Released
(4.18.0-1007.9)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Not vulnerable
(4.2.0-1013.19)
|
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc7)
|
|
| xenial |
Not vulnerable
(4.4.0-1012.12)
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
References
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1686
- https://git.kernel.org/linus/b799207e1e1816b09e7a5920fbb2d5fcf6edd681
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b799207e1e1816b09e7a5920fbb2d5fcf6edd681
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.75
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.13
- https://github.com/torvalds/linux/commit/b799207e1e1816b09e7a5920fbb2d5fcf6edd681
- https://ubuntu.com/security/notices/USN-3832-1
- https://ubuntu.com/security/notices/USN-3835-1
- https://ubuntu.com/security/notices/USN-3847-1
- https://ubuntu.com/security/notices/USN-3847-2
- https://ubuntu.com/security/notices/USN-3847-3
- https://www.cve.org/CVERecord?id=CVE-2018-18445
- NVD
- Launchpad
- Debian