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An issue was discovered in the Linux kernel through 5.11.6. fastrpc_internal_invoke in drivers/misc/fastrpc.c does not prevent user applications from sending kernel RPC messages, aka CID-20c40794eb85. This is a related issue to CVE-2019-2308.

Reference Links(if available):

  •[email protected]/
  •[email protected]/message/OMRQVOTASD3VZP6GE4JJHE27QU6FHTZ6/
  •[email protected]/message/TJPVQZPY3DHPV5I3IVNMSMO6D3PKZISX/
  • CVSS Score (if available)

    v2: / MEDIUMAV:L/AC:L/Au:N/C:C/I:C/A:C

    v3: / HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

    Links to Exploits(if available)