Riskcovery

CVE-2024-36913

Drivers: hv: vmbus: Leak pages if set_memory_encrypted() fails

State
Published
Severity
9.3 Critical
Published
May 30, 2024
Updated
Aug 5, 2026
Reserved
May 30, 2024

Read the record on cve.org

Description

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

Drivers: hv: vmbus: Leak pages if set_memory_encrypted() fails

In CoCo VMs it is possible for the untrusted host to cause set_memory_encrypted() or set_memory_decrypted() to fail such that an error is returned and the resulting memory is shared. Callers need to take care to handle these errors to avoid returning decrypted (shared) memory to the page allocator, which could lead to functional or security issues.

VMBus code could free decrypted pages if set_memory_encrypted()/decrypted() fails. Leak the pages if this happens.

Scores

CVSSScoreVectorSource
3.19.3 CriticalCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HLinux
3.18.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HCISA-ADP

Weaknesses

  • CWE-1258 Exposure of Sensitive System Information Due to Uncleared Debug Information

Affected Products

ProductVersions
LinuxLinux
  • f2f136c05fb6093818a3b3fefcba46231ac66a62 to before 7f2afcbfe4f6b6047b5f68db5067b7321e5be125Affected
  • f2f136c05fb6093818a3b3fefcba46231ac66a62 to before 6123a4e8e25bd40cf44db14694abac00e6b664e6Affected
  • f2f136c05fb6093818a3b3fefcba46231ac66a62 to before e813a0fc2e597146e9cebea61ced9c796d4e308fAffected
  • f2f136c05fb6093818a3b3fefcba46231ac66a62 to before 03f5a999adba062456c8c818a683beb1b498983aAffected
LinuxLinux
  • 5.16Affected
  • before 5.16Not affected
  • 6.1.143 through 6.1.*Not affected
  • 6.6.31 through 6.6.*Not affected
  • 6.8.10 through 6.8.*Not affected
  • 6.9 and laterNot affected

References

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