Description

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

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/

Details

Risk Information

CVSS v2

CVSS v3