CVE-2019-13648

MEDIUM

Description

In the Linux kernel through 5.2.1 on the powerpc platform, when hardware transactional memory is disabled, a local user can cause a denial of service (TM Bad Thing exception and system crash) via a sigreturn() system call that sends a crafted signal frame. This affects arch/powerpc/kernel/signal_32.c and arch/powerpc/kernel/signal_64.c.

References

http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00055.html

http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00056.html

http://packetstormsecurity.com/files/154059/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html

http://www.openwall.com/lists/oss-security/2019/07/30/1

https://git.kernel.org/torvalds/c/f16d80b75a096c52354c6e0a574993f3b0dfbdfe

https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html

https://lists.fedoraproject.org/archives/list/[email protected]/message/GRK2MW223KQZ76DKEF2BZFN6TCXLZLDS/

https://patchwork.ozlabs.org/patch/1133904/

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

https://seclists.org/bugtraq/2019/Aug/18

https://seclists.org/bugtraq/2019/Aug/26

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

https://usn.ubuntu.com/4114-1/

https://usn.ubuntu.com/4115-1/

https://usn.ubuntu.com/4116-1/

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

https://www.debian.org/security/2019/dsa-4497

Details

Source: MITRE

Published: 2019-07-19

Updated: 2019-07-30

Type: CWE-399

Risk Information

CVSS v2.0

Base Score: 4.9

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C

Impact Score: 6.9

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3.0

Base Score: 5.5

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

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM