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CVE-2020-11494

Good to know:

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Date: April 2, 2020

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.

Language: C

Severity Score

Related Resources (18)

https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
https://usn.ubuntu.com/4364-1/
https://usn.ubuntu.com/4363-1/
https://www.debian.org/security/2020/dsa-4698
https://access.redhat.com/security/cve/CVE-2020-11494
https://usn.ubuntu.com/4368-1/
https://security-tracker.debian.org/tracker/CVE-2020-11494
https://usn.ubuntu.com/4369-1/
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-11494
https://nvd.nist.gov/vuln/detail/CVE-2020-11494
https://security.netapp.com/advisory/ntap-20200430-0004/
https://github.com/torvalds/linux/commit/b9258a2cece4ec1f020715fe3554bc2e360f6264
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=08fadc32ce6239dc75fd5e869590e29bc62bbc28
http://packetstormsecurity.com/files/159565/Kernel-Live-Patch-Security-Notice-LSN-0072-1.html
https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00035.html
https://www.mend.io/vulnerability-database/CVE-2020-11494

Severity Score

Weakness Type (CWE)

Exposure of Sensitive Information to an Unauthorized Actor

CWE-200

Use of Uninitialized Resource

CWE-908

Missing Initialization of Resource

CWE-909

Top Fix

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Upgrade Version

Upgrade to version linux-libc-headers - 5.8;linux-yocto - 4.10+gitAUTOINC+805ea440c7_b259a5d744;linux-yocto - 4.8.26+gitAUTOINC+1c60e003c7_27efc3ba68

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): HIGH
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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