CVE-2024-36911
In the Linux kernel, the following vulnerability has been resolved: hv_netvsc: 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…
Does this matter?
Lower severity and a low EPSS score (0.61%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: hv_netvsc: 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 netvsc 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
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.61% probability · 47th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-401
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/4aaed9dbe8acd2b6114458f0498a617283d6275bPatch
- https://git.kernel.org/stable/c/a56fe611326332bf6b7126e5559590c57dcebad4Patch
- https://git.kernel.org/stable/c/bbf9ac34677b57506a13682b31a2a718934c0e31Patch
- https://git.kernel.org/stable/c/4aaed9dbe8acd2b6114458f0498a617283d6275bPatch
- https://git.kernel.org/stable/c/a56fe611326332bf6b7126e5559590c57dcebad4Patch
- https://git.kernel.org/stable/c/bbf9ac34677b57506a13682b31a2a718934c0e31Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.