CVE-2024-41027

Summary

In the Linux kernel, the following vulnerability has been resolved:

Fix userfaultfd_api to return EINVAL as expected

Currently if we request a feature that is not set in the Kernel config we fail silently and return all the available features. However, the man page indicates we should return an EINVAL.

We need to fix this issue since we can end up with a Kernel warning should a program request the feature UFFD_FEATURE_WP_UNPOPULATED on a kernel with the config not set with this feature.

[ 200.812896] WARNING: CPU: 91 PID: 13634 at mm/memory.c:1660 zap_pte_range+0x43d/0x660 [ 200.820738] Modules linked in: [ 200.869387] CPU: 91 PID: 13634 Comm: userfaultfd Kdump: loaded Not tainted 6.9.0-rc5+ #8 [ 200.877477] Hardware name: Dell Inc. PowerEdge R6525/0N7YGH, BIOS 2.7.3 03/30/2022 [ 200.885052] RIP: 0010:zap_pte_range+0x43d/0x660

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxe06f1e1dd4998ffc9da37f580703b55a93fc4de4 < 519547760f16eae7803d2658d9524bc5ba7a20a7affected
LinuxLinuxe06f1e1dd4998ffc9da37f580703b55a93fc4de4 < 14875fd5f9bcf60ac5518c63bfb676ade44aa7c6affected
LinuxLinuxe06f1e1dd4998ffc9da37f580703b55a93fc4de4 < cd94cac4069a763ab5206be2c64c9a8beae590baaffected
LinuxLinuxe06f1e1dd4998ffc9da37f580703b55a93fc4de4 < 8111f902b7c95d75fc80c7e577f5045886c6b384affected
LinuxLinuxe06f1e1dd4998ffc9da37f580703b55a93fc4de4 < 1723f04caacb32cadc4e063725d836a0c4450694affected
LinuxLinux5.7affected
LinuxLinux0 < 5.7unaffected
LinuxLinux5.15.163 <= 5.15.*unaffected
LinuxLinux6.1.100 <= 6.1.*unaffected
LinuxLinux6.6.41 <= 6.6.*unaffected
LinuxLinux6.9.10 <= 6.9.*unaffected
LinuxLinux6.10 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References