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CVE-2019-12819

Good to know:

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Date: June 13, 2019

An issue was discovered in the Linux kernel before 5.0. The function __mdiobus_register() in drivers/net/phy/mdio_bus.c calls put_device(), which will trigger a fixed_mdio_bus_init use-after-free. This will cause a denial of service.

Language: C

Severity Score

Related Resources (15)

https://usn.ubuntu.com/4118-1/
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00040.html
https://github.com/torvalds/linux/commit/6ff7b060535e87c2ae14dd8548512abfdda528fb
http://www.securityfocus.com/bid/108768
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html
http://packetstormsecurity.com/files/154245/Kernel-Live-Patch-Security-Notice-LSN-0054-1.html
https://security.netapp.com/advisory/ntap-20190710-0002/
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html
https://usn.ubuntu.com/4094-1/
https://access.redhat.com/security/cve/CVE-2019-12819
https://nvd.nist.gov/vuln/detail/CVE-2019-12819
https://security-tracker.debian.org/tracker/CVE-2019-12819
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6ff7b060535e87c2ae14dd8548512abfdda528fb
https://people.canonical.com/~ubuntu-security/cve/CVE-2019-12819
https://www.mend.io/vulnerability-database/CVE-2019-12819

Severity Score

Weakness Type (CWE)

Use After Free

CWE-416

Top Fix

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Upgrade to version 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): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

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

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