CVE-2018-7542 — NULL Pointer Dereference in XEN

CWE-476 — NULL Pointer Dereference7 documents6 sources
Severity
6.5MEDIUMNVD
EPSS
0.1%
top 83.19%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
XENDebian XENDebian Linux
Timeline
PublishedFeb 27
Latest updateMay 14

Description

An issue was discovered in Xen 4.8.x through 4.10.x allowing x86 PVH guest OS users to cause a denial of service (NULL pointer dereference and hypervisor crash) by leveraging the mishandling of configurations that lack a Local APIC.

CVSS vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:HExploitability: 2.0 | Impact: 4.0

Affected Packages3 packages

▶debiandebian/xen< xen 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 (bookworm)
▶Debianxen/xen< 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5+3
▶NVDxen/xen4.8.0 — 4.10.0

Also affects: Debian Linux 9.0

🔴Vulnerability Details

2
GHSA
GHSA-3958-x3r2-xc87: An issue was discovered in Xen 4↗2022-05-14
▶
OSV
CVE-2018-7542: An issue was discovered in Xen 4↗2018-02-27
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📋Vendor Advisories

2
Red Hat
xen: x86 PVH guest without LAPIC may DoS the host (XSA-256)↗2018-02-27
▶
Debian
CVE-2018-7542: xen - An issue was discovered in Xen 4.8.x through 4.10.x allowing x86 PVH guest OS us...↗2018
▶

💬Community

2
Bugzilla
CVE-2018-7542 xen: xsa256 xen: x86 PVH guest without LAPIC may DoS the host (XSA-256) [fedora-all]↗2018-02-27
▶
Bugzilla
CVE-2018-7542 xsa256 xen: x86 PVH guest without LAPIC may DoS the host (XSA-256)↗2018-02-12
▶