CVE-2017-7495

low-risk
Published 2017-05-15

fs/ext4/inode.c in the Linux kernel before 4.6.2, when ext4 data=ordered mode is used, mishandles a needs-flushing-before-commit list, which allows local users to obtain sensitive information from other users' files in opportunistic circumstances by waiting for a hardware reset, creating a new file, making write system calls, and reading this file.

Do I need to act?

-
0.05% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Linux

References (14)

Issue Tracking http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=06bd3c...
Release Notes http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.2
Mailing List http://www.openwall.com/lists/oss-security/2017/05/15/2
http://www.securityfocus.com/bid/98491
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1450261
Issue Tracking https://github.com/torvalds/linux/commit/06bd3c36a733ac27962fea7d6f4716884137682...
https://source.android.com/security/bulletin/2017-09-01
Issue Tracking http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=06bd3c...
Release Notes http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.2
Mailing List http://www.openwall.com/lists/oss-security/2017/05/15/2
http://www.securityfocus.com/bid/98491
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1450261
Issue Tracking https://github.com/torvalds/linux/commit/06bd3c36a733ac27962fea7d6f4716884137682...
https://source.android.com/security/bulletin/2017-09-01
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal