Bug 2394574 (CVE-2025-58142) - CVE-2025-58142 xen: viridian: NULL pointer dereference by assuming the SIM page is mapped when a synthetic timer message has to be delivered
Summary: CVE-2025-58142 xen: viridian: NULL pointer dereference by assuming the SIM pa...
Keywords:
Status: NEW
Alias: CVE-2025-58142
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2395157 2395158
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-09-11 15:01 UTC by OSIDB Bzimport
Modified: 2025-09-15 09:39 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2025-09-11 15:01:27 UTC 
[This CNA information record relates to multiple CVEs; the
text explains which aspects/vulnerabilities correspond to which CVE.]

There are multiple issues related to the handling and accessing of guest
memory pages in the viridian code:

 1. A NULL pointer dereference in the updating of the reference TSC area.
    This is CVE-2025-27466.

 2. A NULL pointer dereference by assuming the SIM page is mapped when
    a synthetic timer message has to be delivered.  This is
    CVE-2025-58142.

 3. A race in the mapping of the reference TSC page, where a guest can
    get Xen to free a page while still present in the guest physical to
    machine (p2m) page tables.  This is CVE-2025-58143.
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