Information Exposure Affecting linux-4.9 package, versions <4.9.144-3.1~deb8u1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN8-LINUX49-340555
- published2 Dec 2018
- disclosed26 Nov 2018
Introduced: 26 Nov 2018
CVE-2018-16862 (opens in a new tab)How to fix?
Upgrade Debian:8 linux-4.9 to version 4.9.144-3.1~deb8u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream linux-4.9 package and not the linux-4.9 package as distributed by Debian.
See How to fix? for Debian:8 relevant fixed versions and status.
A security flaw was found in the Linux kernel in a way that the cleancache subsystem clears an inode after the final file truncation (removal). The new file created with the same inode may contain leftover pages from cleancache and the old file data instead of the new one.
References
- https://security-tracker.debian.org/tracker/CVE-2018-16862
- https://lore.kernel.org/patchwork/patch/1011367/
- https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html
- https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
- https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
- https://seclists.org/oss-sec/2018/q4/169
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16862
- http://www.securityfocus.com/bid/106009
- https://usn.ubuntu.com/4094-1/
- https://usn.ubuntu.com/4118-1/
- https://usn.ubuntu.com/3879-1/
- https://usn.ubuntu.com/3879-2/