CVSS 3.0
5.5 mediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HCVE-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.
Severity
- EPSS
- 0.4% chance of exploitation in the next 30 days; higher than 34% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-119, CWE-391
- Published
- Modified
- Record from
- the NVD, synced
Affected
- linux:linux_kernel
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c1fa0768a8713b135848f78fd43ffc208d8ded70
- http://openwall.com/lists/oss-security/2018/03/27/4
- https://access.redhat.com/errata/RHSA-2018:1318
- https://access.redhat.com/security/cve/cve-2018-1091
- https://bugzilla.redhat.com/show_bug.cgi?id=1558149