MGASA-2019-0120 - Updated kernel packages fix security vulnerability

Publication date: 29 Mar 2019
URL: https://advisories.mageia.org/MGASA-2019-0120.html
Type: security
Affected Mageia releases: 6
CVE: CVE-2019-9213

This kernel update is based on the upstream 4.14.106 and fixes atleast
the following security issue:

In the Linux kernel before 4.20.14, expand_downwards in mm/mmap.c lacks
a check for the mmap minimum address, which makes it easier for attackersto exploit kernel NULL pointer dereferences on non-SMAP platforms. This is
related to a capability check for the wrong task (CVE-2019-9213).

It also adds a preparatory fix for Skylake systems that will receive a
microcode update at a later date to address a TSX errata.

WireGuard has been updated to 0.0.20190227.

For other uptstream fixes in this update, see the referenced changelogs.

References:
- https://bugs.mageia.org/show_bug.cgi?id=24519
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.105
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.106
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9213

SRPMS:
- 6/core/kernel-4.14.106-1.mga6
- 6/core/kernel-userspace-headers-4.14.106-1.mga6
- 6/core/kmod-vboxadditions-5.2.24-9.mga6
- 6/core/kmod-virtualbox-5.2.24-9.mga6
- 6/core/kmod-xtables-addons-2.13-83.mga6
- 6/core/wireguard-tools-0.0.20190227-1.mga6

Mageia 2019-0120: kernel security update

This kernel update is based on the upstream 4.14.106 and fixes atleast the following security issue: In the Linux kernel before 4.20.14, expand_downwards in mm/mmap.c lacks a chec...

Summary

This kernel update is based on the upstream 4.14.106 and fixes atleast the following security issue:
In the Linux kernel before 4.20.14, expand_downwards in mm/mmap.c lacks a check for the mmap minimum address, which makes it easier for attackersto exploit kernel NULL pointer dereferences on non-SMAP platforms. This is related to a capability check for the wrong task (CVE-2019-9213).
It also adds a preparatory fix for Skylake systems that will receive a microcode update at a later date to address a TSX errata.
WireGuard has been updated to 0.0.20190227.
For other uptstream fixes in this update, see the referenced changelogs.

References

- https://bugs.mageia.org/show_bug.cgi?id=24519

- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.105

- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.106

- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9213

Resolution

MGASA-2019-0120 - Updated kernel packages fix security vulnerability

SRPMS

- 6/core/kernel-4.14.106-1.mga6

- 6/core/kernel-userspace-headers-4.14.106-1.mga6

- 6/core/kmod-vboxadditions-5.2.24-9.mga6

- 6/core/kmod-virtualbox-5.2.24-9.mga6

- 6/core/kmod-xtables-addons-2.13-83.mga6

- 6/core/wireguard-tools-0.0.20190227-1.mga6

Severity
Publication date: 29 Mar 2019
URL: https://advisories.mageia.org/MGASA-2019-0120.html
Type: security
CVE: CVE-2019-9213

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