by Kastro CVE-2024-36913
Linux Linux — Drivers: hv: vmbus: Leak pages if set_memory_encrypted() fails
Description · from the CVE record
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.
Affected
ProductAffectedFixed inSource
Linuxf2f136c05fb6093818a3b3fefcba46231ac66a62 – < 7f2afcbfe4f6b6047b5f68db5067b7321e5be1257f2afcbfe4f6b6047b5f68db5067b7321e5be125CNA
Linuxf2f136c05fb6093818a3b3fefcba46231ac66a62 – < 6123a4e8e25bd40cf44db14694abac00e6b664e66123a4e8e25bd40cf44db14694abac00e6b664e6CNA
Linuxf2f136c05fb6093818a3b3fefcba46231ac66a62 – < e813a0fc2e597146e9cebea61ced9c796d4e308fe813a0fc2e597146e9cebea61ced9c796d4e308fCNA
Linuxf2f136c05fb6093818a3b3fefcba46231ac66a62 – < 03f5a999adba062456c8c818a683beb1b498983a03f5a999adba062456c8c818a683beb1b498983aCNA
Linux5.16–CNA
linux_kernel1da177e4c3f4 – < 6123a4e8e25b6123a4e8e25bCISA-ADP
linux_kernel1da177e4c3f4 – < e813a0fc2e59e813a0fc2e59CISA-ADP
linux_kernel1da177e4c3f4 – < 03f5a999adba03f5a999adbaCISA-ADP
Scores by source
Linux (CNA)9.3CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CISA ADP8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total