Buffer overflow in Linux Kernel
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 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.
EPSS: 0.004 (34.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Linux Linux_kernel
- N/a Linux Kernel V4.13 And Newer — versions Linux kernel v4.13 and newer
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_CONFIRM, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
- secalert@redhat.com (x_refsource_CONFIRM, Patch, Third Party Advisory)
- secalert@redhat.com (x_refsource_CONFIRM, Third Party Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
- secalert@redhat.com (x_refsource_CONFIRM, Patch, Third Party Advisory)
- secalert@redhat.com (x_refsource_CONFIRM, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-1091?
- CVE-2018-1091 is a medium-severity vulnerability in Linux Kernel, classified under CWE-391. CVSS score: 5.5/10. Published 2018-03-27.
- How severe is CVE-2018-1091?
- Medium severity. CVSS v3 base score is 5.5 out of 10.