CVE-2020-11494

LOW

Description

An issue was discovered in slc_bump in drivers/net/can/slcan.c in the Linux kernel 3.16 through 5.6.2. It allows attackers to read uninitialized can_frame data, potentially containing sensitive information from kernel stack memory, if the configuration lacks CONFIG_INIT_STACK_ALL, aka CID-b9258a2cece4.

References

http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00035.html

http://packetstormsecurity.com/files/159565/Kernel-Live-Patch-Security-Notice-LSN-0072-1.html

https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=08fadc32ce6239dc75fd5e869590e29bc62bbc28

https://github.com/torvalds/linux/commit/b9258a2cece4ec1f020715fe3554bc2e360f6264

https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html

https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html

https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html

https://security.netapp.com/advisory/ntap-20200430-0004/

https://usn.ubuntu.com/4363-1/

https://usn.ubuntu.com/4364-1/

https://usn.ubuntu.com/4368-1/

https://usn.ubuntu.com/4369-1/

https://www.debian.org/security/2020/dsa-4698

Details

Source: MITRE

Published: 2020-04-02

Updated: 2021-01-04

Type: CWE-200

Risk Information

CVSS v2.0

Base Score: 2.1

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

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3.0

Base Score: 4.4

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

Impact Score: 3.6

Exploitability Score: 0.8

Severity: MEDIUM