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.
CVSS breakdown
CVSS 3.0
Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
None
Affected products
- Unknown / kerneln/a – n/a
References
- MISChttp://www.securityfocus.com/bid/106009
- VENDOR_ADVISORYhttps://usn.ubuntu.com/3879-2/
- MAILING_LISThttps://seclists.org/oss-sec/2018/q4/169
- VENDOR_ADVISORYhttps://usn.ubuntu.com/3879-1/
- MISChttps://lore.kernel.org/patchwork/patch/1011367/
- MISChttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16862
- MAILING_LISThttps://lists.debian.org/debian-lts-announce/2019/03/msg00017.html
- MAILING_LISThttps://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
- MAILING_LISThttps://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
- VENDOR_ADVISORYhttps://usn.ubuntu.com/4094-1/
- VENDOR_ADVISORYhttps://usn.ubuntu.com/4118-1/