CVE-2019-13233 Information

Description

In arch/x86/lib/insn-eval.c in the Linux kernel before 5.1.9 there is a use-after-free for access to an LDT entry because of a race condition between modify_ldt() and a BR exception for an MPX bounds violation.

CVSS Vector

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

Reference

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00025.html http://packetstormsecurity.com/files/154408/Kernel-Live-Patch-Security-Notice-LSN-0055-1.html https://access.redhat.com/errata/RHSA-2019:3309 https://access.redhat.com/errata/RHSA-2019:3517 https://bugs.chromium.org/p/project-zero/issues/detail?id=1879 https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.9 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=de9f869616dd95e95c00bdd6b0fcd3421e8a4323 https://github.com/torvalds/linux/commit/de9f869616dd95e95c00bdd6b0fcd3421e8a4323 https://seclists.org/bugtraq/2019/Aug/13 https://security.netapp.com/advisory/ntap-20190806-0001/ https://support.f5.com/csp/article/K13331647?utm_source=f5support&utm_medium=RSS https://usn.ubuntu.com/4093-1/ https://usn.ubuntu.com/4094-1/ https://usn.ubuntu.com/4117-1/ https://usn.ubuntu.com/4118-1/ https://www.debian.org/security/2019/dsa-4495

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.0