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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…
Medium5.5EPSS 0.40%
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Medium5.5 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.40% · top 65% of all CVEs (3 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
Linux kernel v4.13 and newer
- affected Linux kernel v4.13 and newer
References (8)
- https://bugzilla.redhat.com/show_bug.cgi?id=1558149 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://marc.info/?l=linuxppc-embedded&m=150535531910494&w=2 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://access.redhat.com/security/cve/cve-2018-1091 (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2018:1318 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c1fa0768a8713b135848f78fd43ffc208d8ded70 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/torvalds/linux/commit/c1fa0768a8713b135848f78fd43ffc208d8ded70 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://openwall.com/lists/oss-security/2018/03/27/4 (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2018-1091)Record last updated .