Debian LTS: Security Advisory for linux-4.9 (DLA-2114-1)

Published: 2020-03-03 04:00:55
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:N/AC:L/Au:N/C:C/I:C/A:C

Summary:
The remote host is missing an update for the 'linux-4.9' Linux Distribution Package(s) announced via the DLA-2114-1 advisory.

Detection Method:
Checks if a vulnerable Linux Distribution Package version is present on the target host.

Technical Details:
Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks. CVE-2018-13093, CVE-2018-13094 Wen Xu from SSLab at Gatech reported several NULL pointer dereference flaws that may be triggered when mounting and operating a crafted XFS volume. An attacker able to mount arbitrary XFS volumes could use this to cause a denial of service (crash). CVE-2018-20976 It was discovered that the XFS file-system implementation did not correctly handle some mount failure conditions, which could lead to a use-after-free. The security impact of this is unclear. CVE-2018-21008 It was discovered that the rsi wifi driver did not correctly handle some failure conditions, which could lead to a use-after- free. The security impact of this is unclear. CVE-2019-0136 It was discovered that the wifi soft-MAC implementation (mac80211) did not properly authenticate Tunneled Direct Link Setup (TDLS) messages. A nearby attacker could use this for denial of service (loss of wifi connectivity). CVE-2019-2215 The syzkaller tool discovered a use-after-free vulnerability in the Android binder driver. A local user on a system with this driver enabled could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation. However, this driver is not enabled on Debian Linux Distribution Packaged kernels. CVE-2019-10220 Various developers and researchers found that if a crafted file- system or malicious file server presented a directory with filenames including a '/' character, this could confuse and possibly defeat security checks in applications that read the directory. The kernel will now return an error when reading such a directory, rather than passing the invalid filenames on to user-space. CVE-2019-14615 It was discovered that Intel 9th and 10th generation GPUs did not clear user-visible state during a context switch, which resulted in information leaks between GPU tasks. This has been mitigated in the i915 driver. The affected chips (gen9 and gen10) are listed at < CVE-2019-14814, CVE-2019-14815, CVE-2019-14816 Multiple bugs were discovered in the mwifiex wifi driver, which could lead to heap buffer overflows. A local user permitted to configure a device handled by this driver could probably use this for privilege escalation. CVE-2019-14895, CVE-2019-14901 ADLab of Venustech discovered potential heap buffer overflows in the mwifiex wifi driver. On systems using this driver, a malicious Wireless Access Point or adhoc/P2P peer could use these to cause a denial of service (memory corruption or crash) or possibly for remote code ... Description truncated. Please see the references for more information.

Affected Versions:
'linux-4.9' Linux Distribution Package(s) on Debian Linux.

Recommendations:
For Debian 8 'Jessie', these problems have been fixed in version 4.9.210-1~deb8u1. This update additionally fixes Debian bugs #869511 and 945023, and includes many more bug fixes from stable updates 4.9.190-4.9.210 inclusive. We recommend that you upgrade your linux-4.9 Linux Distribution Packages.

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2018-13093
https://nvd.nist.gov/vuln/detail/CVE-2018-13094
https://nvd.nist.gov/vuln/detail/CVE-2018-20976
https://nvd.nist.gov/vuln/detail/CVE-2018-21008
https://nvd.nist.gov/vuln/detail/CVE-2019-0136
https://nvd.nist.gov/vuln/detail/CVE-2019-10220
https://nvd.nist.gov/vuln/detail/CVE-2019-14615
https://nvd.nist.gov/vuln/detail/CVE-2019-14814
https://nvd.nist.gov/vuln/detail/CVE-2019-14815
https://nvd.nist.gov/vuln/detail/CVE-2019-14816
https://nvd.nist.gov/vuln/detail/CVE-2019-14895
https://nvd.nist.gov/vuln/detail/CVE-2019-14896
https://nvd.nist.gov/vuln/detail/CVE-2019-14897
https://nvd.nist.gov/vuln/detail/CVE-2019-14901
https://nvd.nist.gov/vuln/detail/CVE-2019-15098
https://nvd.nist.gov/vuln/detail/CVE-2019-15217
https://nvd.nist.gov/vuln/detail/CVE-2019-15291
https://nvd.nist.gov/vuln/detail/CVE-2019-15505
https://nvd.nist.gov/vuln/detail/CVE-2019-15917
https://nvd.nist.gov/vuln/detail/CVE-2019-16746
https://nvd.nist.gov/vuln/detail/CVE-2019-17052
https://nvd.nist.gov/vuln/detail/CVE-2019-17053
https://nvd.nist.gov/vuln/detail/CVE-2019-17054
https://nvd.nist.gov/vuln/detail/CVE-2019-17055
https://nvd.nist.gov/vuln/detail/CVE-2019-17056
https://nvd.nist.gov/vuln/detail/CVE-2019-17075
https://nvd.nist.gov/vuln/detail/CVE-2019-17133
https://nvd.nist.gov/vuln/detail/CVE-2019-17666
https://nvd.nist.gov/vuln/detail/CVE-2019-18282
https://nvd.nist.gov/vuln/detail/CVE-2019-18683
https://nvd.nist.gov/vuln/detail/CVE-2019-18809
https://nvd.nist.gov/vuln/detail/CVE-2019-19037
https://nvd.nist.gov/vuln/detail/CVE-2019-19051
https://nvd.nist.gov/vuln/detail/CVE-2019-19052
https://nvd.nist.gov/vuln/detail/CVE-2019-19056
https://nvd.nist.gov/vuln/detail/CVE-2019-19057
https://nvd.nist.gov/vuln/detail/CVE-2019-19062
https://nvd.nist.gov/vuln/detail/CVE-2019-19066
https://nvd.nist.gov/vuln/detail/CVE-2019-19068
https://nvd.nist.gov/vuln/detail/CVE-2019-19227
https://nvd.nist.gov/vuln/detail/CVE-2019-19332
https://nvd.nist.gov/vuln/detail/CVE-2019-19447
https://nvd.nist.gov/vuln/detail/CVE-2019-19523
https://nvd.nist.gov/vuln/detail/CVE-2019-19524
https://nvd.nist.gov/vuln/detail/CVE-2019-19525
https://nvd.nist.gov/vuln/detail/CVE-2019-19527
https://nvd.nist.gov/vuln/detail/CVE-2019-19530
https://nvd.nist.gov/vuln/detail/CVE-2019-19531
https://nvd.nist.gov/vuln/detail/CVE-2019-19532
https://nvd.nist.gov/vuln/detail/CVE-2019-19533
https://nvd.nist.gov/vuln/detail/CVE-2019-19534
https://nvd.nist.gov/vuln/detail/CVE-2019-19535
https://nvd.nist.gov/vuln/detail/CVE-2019-19536
https://nvd.nist.gov/vuln/detail/CVE-2019-19537
https://nvd.nist.gov/vuln/detail/CVE-2019-19767
https://nvd.nist.gov/vuln/detail/CVE-2019-19947
https://nvd.nist.gov/vuln/detail/CVE-2019-19965
https://nvd.nist.gov/vuln/detail/CVE-2019-20096
https://nvd.nist.gov/vuln/detail/CVE-2019-2215

References:

https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
https://security-tracker.debian.org/tracker/DLA-2114-1
https://bugs.debian.org/869511
https://bugs.debian.org/945023

Severity
High
CVSS Score
10.0
Published
2020-03-03
Modified
2020-03-03
Category
Debian Local Security Checks

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