Vulnerability Description
An issue was discovered in __split_huge_pmd in mm/huge_memory.c in the Linux kernel before 5.7.5. The copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check, aka CID-c444eb564fb1.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.5.5, < 4.9.228 |
| Netapp | Cloud Backup | - |
| Netapp | Element Software | - |
| Netapp | Hci Management Node | - |
| Netapp | Solidfire | - |
| Netapp | Hci Bootstrap Os | - |
| Netapp | Hci Compute Node | - |
| Netapp | H410C Firmware | - |
| Netapp | H410C | - |
Related Weaknesses (CWE)
References
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2045ExploitIssue TrackingPatch
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.5Release NotesVendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c4PatchVendor Advisory
- https://security.netapp.com/advisory/ntap-20210108-0002/Third Party Advisory
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2045ExploitIssue TrackingPatch
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.5Release NotesVendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c4PatchVendor Advisory
- https://security.netapp.com/advisory/ntap-20210108-0002/Third Party Advisory
FAQ
What is CVE-2020-29368?
CVE-2020-29368 is a vulnerability with a CVSS score of 7.0 (HIGH). An issue was discovered in __split_huge_pmd in mm/huge_memory.c in the Linux kernel before 5.7.5. The copy-on-write implementation can grant unintended write access because of a race condition in a TH...
How severe is CVE-2020-29368?
CVE-2020-29368 has been rated HIGH with a CVSS base score of 7.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-29368?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Netapp Cloud Backup, Netapp Element Software, Netapp Hci Management Node, Netapp Solidfire.