CVE-2021-0942

2022-09-1319:13:39

google_android

www.cve.org

untrusted app

oob read

oob write

android kernel security

AI Score

8.8

Confidence

High

EPSS

0.001

Percentile

44.2%

JSON

The path in this case is a little bit convoluted. The end result is that via an ioctl an untrusted app can control the ui32PageIndex offset in the expression:sPA.uiAddr = page_to_phys(psOSPageArrayData->pagearray[ui32PageIndex]);With the current PoC this crashes as an OOB read. However, given that the OOB read value is ending up as the address field of a struct I think i seems plausible that this could lead to an OOB write if the attacker is able to cause the OOB read to pull an interesting kernel address. Regardless if this is a read or write, it is a High severity issue in the kernel.Product: AndroidVersions: Android SoCAndroid ID: A-238904312

CNA Affected

[
  {
    "product": "Android",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "Android SoC"
      }
    ]
  }
]

References

source.android.com/security/bulletin/2022-09-01