CVE-2023-0459

Summary

Copy_from_user on 64-bit versions of the Linux kernel does not implement the __uaccess_begin_nospec allowing a user to bypass the "access_ok" check and pass a kernel pointer to copy_from_user(). This would allow an attacker to leak information. We recommend upgrading beyond commit 74e19ef0ff8061ef55957c3abd71614ef0f42f47

Affected Software

VendorProductVersion RangeStatus
LinuxLinux Kernel4b842e4e25b12951fa10dedb4bc16bc47e3b850c <= 74e19ef0ff8061ef55957c3abd71614ef0f42f47affected

Weaknesses

  • CWE-763: CWE-763 Release of Invalid Pointer or Reference

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

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

References