CVE-2025-68743
In the Linux kernel, the following vulnerability has been resolved: mshv: Fix create memory region overlap check The current check is incorrect; it only checks if the beginning or end of a region is within an existing region. This doesn't account for userspace specifying a region that begins before and ends after an existing region. Change the logic to a range intersection check against gfns and uaddrs for each region. Remove mshv_partition_region_by_uaddr() as it is no longer used.
Affected versions
Linux kernel versions
6.15
and later are affected. Fixed in
6.17.13,
6.18.2,
6.19
and their respective stable series.
References
The following references provide additional information about CVE-2025-68743 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
-
PatchKernel patch commithttps://git.kernel.org/stable/c/2183924dd834e0703f87e17c17e689bcbf55d69d
-
PatchKernel patch commithttps://git.kernel.org/stable/c/ab3e7a78d83a61d335458cfe2e4d17eba69ae73d
-
PatchKernel patch commithttps://git.kernel.org/stable/c/ba9eb9b86d232854e983203dc2fb1ba18e316681
Frequently asked questions
-
What is CVE-2025-68743?
CVE-2025-68743 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.15 onward and has been patched in 6.17.13, 6.18.2 and 6.19. CVE-2025-68743 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
-
Is there a patch available for CVE-2025-68743?
Yes — CVE-2025-68743 has been patched. Fixed versions include 6.17.13, 6.18.2 and 6.19. If you are running Linux kernel 6.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
-
Is CVE-2025-68743 actively exploited?
No — CVE-2025-68743 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.