Vulnerability Details : CVE-2019-12819
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.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2019-12819
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-12819
0.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 32 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-12819
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
2.1
|
LOW | AV:L/AC:L/Au:N/C:N/I:N/A:P |
3.9
|
2.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2019-12819
-
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-12819
-
http://packetstormsecurity.com/files/154245/Kernel-Live-Patch-Security-Notice-LSN-0054-1.html
Kernel Live Patch Security Notice LSN-0054-1 ≈ Packet Storm
-
https://usn.ubuntu.com/4094-1/
USN-4094-1: Linux kernel vulnerabilities | Ubuntu security notices
-
https://usn.ubuntu.com/4118-1/
USN-4118-1: Linux kernel (AWS) vulnerabilities | Ubuntu security notices
-
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html
[security-announce] openSUSE-SU-2019:1570-1: important: Security update
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https://github.com/torvalds/linux/commit/6ff7b060535e87c2ae14dd8548512abfdda528fb
mdio_bus: Fix use-after-free on device_register fails · torvalds/linux@6ff7b06 · GitHubPatch;Third Party Advisory
-
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6ff7b060535e87c2ae14dd8548512abfdda528fb
kernel/git/torvalds/linux.git - Linux kernel source treeMailing List;Patch;Vendor Advisory
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http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00040.html
[security-announce] openSUSE-SU-2019:1571-1: important: Security update
-
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html
[security-announce] openSUSE-SU-2019:1579-1: important: Security update
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http://www.securityfocus.com/bid/108768
Linux kernel CVE-2019-12819 Local Denial of Service VulnerabilityThird Party Advisory;VDB Entry
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https://security.netapp.com/advisory/ntap-20190710-0002/
June 2019 Linux Kernel Vulnerabilities in NetApp Products | NetApp Product Security
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