CVE-2019-13233

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.

References

https://www.debian.org/security/2019/dsa-4495

https://usn.ubuntu.com/4118-1/

https://usn.ubuntu.com/4117-1/

https://usn.ubuntu.com/4094-1/

https://usn.ubuntu.com/4093-1/

https://support.f5.com/csp/article/K13331647?utm_source=f5support&amp%3Butm_medium=RSS

https://security.netapp.com/advisory/ntap-20190806-0001/

https://seclists.org/bugtraq/2019/Aug/13

https://github.com/torvalds/linux/commit/de9f869616dd95e95c00bdd6b0fcd3421e8a4323

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=de9f869616dd95e95c00bdd6b0fcd3421e8a4323

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.9

https://bugs.chromium.org/p/project-zero/issues/detail?id=1879

https://access.redhat.com/errata/RHSA-2019:3517

https://access.redhat.com/errata/RHSA-2019:3309

http://packetstormsecurity.com/files/154408/Kernel-Live-Patch-Security-Notice-LSN-0055-1.html

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00025.html

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3