ubuntu-cve-2018-1091
Vulnerability from osv_ubuntu
Published
2018-03-27 21:29
Modified
2025-07-16 04:53
Summary
Details
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
5.5 (Medium)
N/A (UNKNOWN)
References
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"name": "linux-oem",
"purl": "pkg:deb/ubuntu/linux-oem@4.13.0-1008.9?arch=source\u0026distro=xenial"
},
"ranges": [
{
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{
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],
"type": "ECOSYSTEM"
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],
"versions": []
}
],
"aliases": [],
"details": "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.",
"id": "UBUNTU-CVE-2018-1091",
"modified": "2025-07-16T04:53:24Z",
"published": "2018-03-27T21:29:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2018-1091"
},
{
"type": "REPORT",
"url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c1fa0768a8713b135848f78fd43ffc208d8ded70"
},
{
"type": "REPORT",
"url": "http://openwall.com/lists/oss-security/2018/03/27/4"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/cve-2018-1091"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1558149"
},
{
"type": "REPORT",
"url": "https://github.com/torvalds/linux/commit/c1fa0768a8713b135848f78fd43ffc208d8ded70"
},
{
"type": "REPORT",
"url": "https://marc.info/?l=linuxppc-embedded\u0026m=150535531910494\u0026w=2"
},
{
"type": "REPORT",
"url": "https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2018-1091"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2018-1091"
],
"withdrawn": "2025-07-18T16:44:22Z"
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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