Use After Free in Linux Kernel
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 class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (49.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/torvalds/linux/commit/6ff7b060535e87c2ae14dd8548512abfdda528fb (Patch, Third Party Advisory)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Mailing List, Vendor Advisory)
- www.securityfocus.com/bid/108768 (VDB Entry, Third Party Advisory, vdb-entry)
- lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2019-06/msg00040.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html (vendor-advisory)
- security.netapp.com/advisory/ntap-20190710-0002/
- usn.ubuntu.com/4094-1/ (vendor-advisory)
- packetstormsecurity.com/files/154245/Kernel-Live-Patch-Security-Notice-LSN-0054…
- usn.ubuntu.com/4118-1/ (vendor-advisory)
Frequently asked questions
- What is CVE-2019-12819?
- CVE-2019-12819 is a medium-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 5.5/10. Published 2019-06-14.
- How severe is CVE-2019-12819?
- Medium severity. CVSS v3 base score is 5.5 out of 10.