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CVE-2017-7495

Date: May 15, 2017

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.

Language: C

Severity Score

Related Resources (12)

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=06bd3c36a733ac27962fea7d6f47168841376824
http://www.openwall.com/lists/oss-security/2017/05/15/2
http://www.securityfocus.com/bid/98491
https://access.redhat.com/security/cve/CVE-2017-7495
https://nvd.nist.gov/vuln/detail/CVE-2017-7495
https://bugzilla.redhat.com/show_bug.cgi?id=1450261
https://github.com/torvalds/linux/commit/06bd3c36a733ac27962fea7d6f47168841376824
https://security-tracker.debian.org/tracker/CVE-2017-7495
https://people.canonical.com/~ubuntu-security/cve/CVE-2017-7495
https://source.android.com/security/bulletin/2017-09-01
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.2
https://www.mend.io/vulnerability-database/CVE-2017-7495

Severity Score

Weakness Type (CWE)

Exposure of Sensitive Information to an Unauthorized Actor

CWE-200

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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