title: Multiple Dmabuf Kernel Address UAF Vulnerability
description: In the function call related to CAM_REQ_MGR_RELEASE_BUF there is no check if the buffer is being used. So when a function called cam_mem_get_cpu_buf to get the kernel va to use, another thread can call CAM_REQ_MGR_RELEASE_BUF to unmap the kernel va which cause UAF of the kernel address.
affected:
{
defaultStatus: unaffected
platforms: [Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables]
product: Snapdragon
vendor: Qualcomm, Inc.
versions:
status: affected, version: FastConnect 6800
status: affected, version: FastConnect 6900
status: affected, version: FastConnect 7800
status: affected, version: QCA6391
status: affected, version: QCA6426
status: affected, version: QCA6436
status: affected, version: QCN9074
status: affected, version: QCS410
status: affected, version: QCS610
status: affected, version: SD865 5G
status: affected, version: Snapdragon 8 Gen 1 Mobile Platform
status: affected, version: Snapdragon 865 5G Mobile Platform
status: affected, version: Snapdragon 865+ 5G Mobile Platform (SM8250-AB)
status: affected, version: Snapdragon 870 5G Mobile Platform (SM8250-AC)
status: affected, version: Snapdragon X55 5G Modem-RF System
status: affected, version: Snapdragon XR2 5G Platform
status: affected, version: SW5100
status: affected, version: SW5100P
status: affected, version: SXR2130
status: affected, version: WCD9341
status: affected, version: WCD9370
status: affected, version: WCD9380
status: affected, version: WCN3660B
status: affected, version: WCN3680B
status: affected, version: WCN3950
status: affected, version: WCN3980
status: affected, version: WCN3988
status: affected, version: WSA8810
status: affected, version: WSA8815
status: affected, version: WSA8830
status: affected, version: WSA8835
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: LOCAL
availabilityImpact: HIGH
baseScore: 6.7
baseSeverity: MEDIUM
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: HIGH
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
version: 3.1
]
format: CVSS
scenarios: GENERAL