Riskcovery

CVE-2024-36910

uio_hv_generic: Don't free decrypted memory

State
Published
Severity
8.4 High
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:

uio_hv_generic: Don't free decrypted memory

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.

The VMBus device UIO driver could free decrypted/shared pages if set_memory_decrypted() fails. Check the decrypted field in the gpadl to decide whether to free the memory.

Scores

CVSSScoreVectorSource
3.18.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLinux
3.16.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCISA-ADP

Weaknesses

  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

Affected Products

ProductVersions
LinuxLinux
  • d4dccf353db80e209f262e3973c834e6e48ba9a9 to before dabf12bf994318d939f70d47cfda30e47abb2c54Affected
  • d4dccf353db80e209f262e3973c834e6e48ba9a9 to before 6466a0f6d235c8a18c602cb587160d7e49876db9Affected
  • d4dccf353db80e209f262e3973c834e6e48ba9a9 to before fe2c58602354fbd60680dc42ac3a0b772cda7d23Affected
  • d4dccf353db80e209f262e3973c834e6e48ba9a9 to before 3d788b2fbe6a1a1a9e3db09742b90809d51638b7Affected
LinuxLinux
  • 5.16Affected
  • before 5.16Not affected
  • 6.1.91 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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