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Category:   OS (Linux)  >   Linux Kernel Vendors:   kernel.org
Linux Kernel Extended BPF Verifier Pointer Comparison Flaw Lets Local Users Obtain Potentially Sensitive Information on the Target System
SecurityTracker Alert ID:  1040059
SecurityTracker URL:  http://securitytracker.com/id/1040059
CVE Reference:   CVE-2017-17864   (Links to External Site)
Date:  Dec 26 2017
Impact:   Disclosure of system information

Version(s): 4.14.8 and prior
Description:   A vulnerability was reported in the Linux kernel. A local user can obtain potentially sensitive information.

The Extended BPF verifier ('kernel/bpf/verifier.c') does not properly detect pointer leaks from conditional code. A local user can obtain potentially sensitive address information on the target system.

Jann Horn reported this vulnerability.

Impact:   A local user can obtain potentially sensitive address information on the target system.
Solution:   The vendor has issued a source code fix, available at:

https://github.com/torvalds/linux/commit/179d1c5602997fef5a940c6ddcf31212cbfebd14#diff-3f169a344ebaf82af97903746dc16e4d

Vendor URL:  www.kernel.org/ (Links to External Site)
Cause:   Access control error, State error

Message History:   This archive entry has one or more follow-up message(s) listed below.
Jan 10 2018 (Ubuntu Issues Fix) Linux Kernel Extended BPF Verifier Pointer Comparison Flaw Lets Local Users Obtain Potentially Sensitive Information on the Target System
Ubuntu has issued a fix for Ubuntu Linux 17.10.



 Source Message Contents



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