CVE-2018-1091: In the flush_tmregs_to_thread function in arch/powerpc/kernel/ptrace.c in the Linux kernel before 4.13.5, a guest kernel crash can be triggered from…

PriorityP422medium5.5CVSS 3.0

AVLACLPRLUINSUCNINAH

EPSS

0.41%

33.8th percentile

In the flush_tmregs_to_thread function in arch/powerpc/kernel/ptrace.c in the Linux kernel before 4.13.5, a guest kernel crash can be triggered from unprivileged userspace during a core dump on a POWER host due to a missing processor feature check and an erroneous use of transactional memory (TM) instructions in the core dump path, leading to a denial of service.

Affected

6 ranges

Vendor	Product	Version range	Fixed in
debian	linux	< linux 4.13.10-1 (bookworm)	linux 4.13.10-1 (bookworm)
linux	linux_kernel	<= 4.13.4	—
linux	linux_kernel	>= 0 < 4.13.10-1	4.13.10-1
linux	linux_kernel	>= 0 < 4.13.10-1	4.13.10-1
linux	linux_kernel	>= 0 < 4.13.10-1	4.13.10-1
linux	linux_kernel	>= 0 < 4.13.10-1	4.13.10-1

CVSS provenance

nvdv3.05.5MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvdv2.04.9MEDIUMAV:L/AC:L/Au:N/C:N/I:N/A:C

osv5.5MEDIUM

vendor_debian5.5MEDIUM

vendor_redhat5.5MEDIUM

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.