CVE-2017-9150 Information

Description

The do_check function in kernel/bpf/verifier.c in the Linux kernel before 4.11.1 does not make the allow_ptr_leaks value available for restricting the output of the print_bpf_insn function which allows local users to obtain sensitive address information via crafted bpf system calls.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Reference

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0d0e57697f162da4aa218b5feafe614fb666db07 http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.1 http://www.securityfocus.com/bid/98635 https://bugs.chromium.org/p/project-zero/issues/detail?id=1251 https://github.com/torvalds/linux/commit/0d0e57697f162da4aa218b5feafe614fb666db07 https://source.android.com/security/bulletin/2017-09-01 https://www.exploit-db.com/exploits/42048/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

5.5