CVE-2024-36910
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.25%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.4 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.25% probability · 16th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-200
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/3d788b2fbe6a1a1a9e3db09742b90809d51638b7Patch
- https://git.kernel.org/stable/c/6466a0f6d235c8a18c602cb587160d7e49876db9Patch
- https://git.kernel.org/stable/c/dabf12bf994318d939f70d47cfda30e47abb2c54Patch
- https://git.kernel.org/stable/c/fe2c58602354fbd60680dc42ac3a0b772cda7d23Patch
- https://git.kernel.org/stable/c/3d788b2fbe6a1a1a9e3db09742b90809d51638b7Patch
- https://git.kernel.org/stable/c/6466a0f6d235c8a18c602cb587160d7e49876db9Patch
- https://git.kernel.org/stable/c/dabf12bf994318d939f70d47cfda30e47abb2c54Patch
- https://git.kernel.org/stable/c/fe2c58602354fbd60680dc42ac3a0b772cda7d23Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.