CVE-2021-28375

high

Description

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.

References

https://lore.kernel.org/stable/[email protected]/

https://git.kernel.org/linus/20c40794eb85ea29852d7bc37c55713802a543d6

https://lists.fedoraproject.org/archives/list/[email protected]/message/OMRQVOTASD3VZP6GE4JJHE27QU6FHTZ6/

https://lists.fedoraproject.org/archives/list/[email protected]/message/TJPVQZPY3DHPV5I3IVNMSMO6D3PKZISX/

https://lists.fedoraproject.org/archives/list/[email protected]/message/XAUNYDTGE6MB4NWL2SIHPCODCLET3JZB/

https://security.netapp.com/advisory/ntap-20210401-0003/

Details

Source: MITRE

Published: 2021-03-15

Updated: 2022-05-20

Type: CWE-269

Risk Information

CVSS v2

Base Score: 7.2

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Impact Score: 10

Exploitability Score: 3.9

Severity: HIGH

CVSS v3

Base Score: 7.8

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH