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

Risk Information

CVSS v2

CVSS v3