CVE-2018-16862: Infoleak
First published: Mon Nov 12 2018(Updated: )
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 so the old file data instead of the new one. References: <a href="https://seclists.org/oss-sec/2018/q4/169">https://seclists.org/oss-sec/2018/q4/169</a> A suggested patch: <a href="https://lore.kernel.org/patchwork/patch/1011367/">https://lore.kernel.org/patchwork/patch/1011367/</a>
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.119-1 6.12.9-1 | |
| Linux Linux kernel | <=4.14 | |
| Red Hat Enterprise Linux | =7.0 | |
| Canonical Ubuntu Linux | =14.04 | |
| Canonical Ubuntu Linux | =16.04 | |
| Debian Debian Linux | =8.0 |
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Reference Links
- http://www.securityfocus.com/bid/106009
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16862
- 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://lore.kernel.org/patchwork/patch/1011367/
- https://seclists.org/oss-sec/2018/q4/169
- https://usn.ubuntu.com/3879-1/
- https://usn.ubuntu.com/3879-2/
- https://usn.ubuntu.com/4094-1/
- https://usn.ubuntu.com/4118-1/
- https://launchpad.net/bugs/cve/CVE-2018-16862
- https://access.redhat.com/certified-hypervisors
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1653122
- https://bugzilla.redhat.com/show_bug.cgi?id=1649017
- https://git.kernel.org/linus/6ff38bd40230af35e446239396e5fc8ebd6a5248
- https://security-tracker.debian.org/tracker/CVE-2018-16862
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16862
- https://nvd.nist.gov/vuln/detail/CVE-2018-16862
- https://ubuntu.com/security/CVE-2018-16862
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