The following updates has been released for Arch Linux:
ASA-201811-1: linux: denial of service
ASA-201811-2: linux-lts: denial of service
ASA-201811-1: linux: denial of service
ASA-201811-2: linux-lts: denial of service
ASA-201811-1: linux: denial of service
Arch Linux Security Advisory ASA-201811-1
=========================================
Severity: Low
Date : 2018-11-01
CVE-ID : CVE-2018-18445
Package : linux
Type : denial of service
Remote : No
Link : https://security.archlinux.org/AVG-784
Summary
=======
The package linux before version 4.18.13.arch1-1 is vulnerable to
denial of service.
Resolution
==========
Upgrade to 4.18.13.arch1-1.
# pacman -Syu "linux>=4.18.13.arch1-1"
The problem has been fixed upstream in version 4.18.13.arch1.
Workaround
==========
None.
Description
===========
In the Linux kernel 4.14.x before 4.14.75 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.
Impact
======
A local attacker is able to crash the kernel and leak information using
a specially crafted BPF program.
References
==========
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b799207e1e1816b09e7a5920fbb2d5fcf6edd681
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.13
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.75
https://bugs.chromium.org/p/project-zero/issues/detail?id=1686
https://seclists.org/oss-sec/2018/q4/69
https://security.archlinux.org/CVE-2018-18445
ASA-201811-2: linux-lts: denial of service
Arch Linux Security Advisory ASA-201811-2
=========================================
Severity: Low
Date : 2018-11-01
CVE-ID : CVE-2018-18445
Package : linux-lts
Type : denial of service
Remote : No
Link : https://security.archlinux.org/AVG-801
Summary
=======
The package linux-lts before version 4.14.75-1 is vulnerable to denial
of service.
Resolution
==========
Upgrade to 4.14.75-1.
# pacman -Syu "linux-lts>=4.14.75-1"
The problem has been fixed upstream in version 4.14.75.
Workaround
==========
None.
Description
===========
In the Linux kernel 4.14.x before 4.14.75 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.
Impact
======
A local attacker is able to crash the kernel and leak information using
a specially crafted BPF program.
References
==========
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b799207e1e1816b09e7a5920fbb2d5fcf6edd681
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.13
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.75
https://bugs.chromium.org/p/project-zero/issues/detail?id=1686
https://seclists.org/oss-sec/2018/q4/69
https://security.archlinux.org/CVE-2018-18445
