Use After Free in Qemu
CVE-2018-19364
hw/9pfs/cofile.c and hw/9pfs/9p.c in QEMU can modify an fid path while it is being accessed by a second thread, leading to (for example) a use-after-free outcome.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (42.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 42.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Qemu — versions 3.1.0
- Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04
- Debian Linux — versions 8.0, 9.0
- Fedoraproject Fedora — versions 29
- openSUSE Leap — versions 42.3
Weakness classification (CWE)
References
- lists.debian.org/debian-lts-announce/2019/01/msg00023.html (mailing-list, Mailing List, Third Party Advisory)
- lists.gnu.org/archive/html/qemu-devel/2018-11/msg01139.html (Vendor Advisory, mailing-list, Patch, Mailing List)
- usn.ubuntu.com/3826-1/ (vendor-advisory, Third Party Advisory)
- www.openwall.com/lists/oss-security/2018/11/20/1 (mailing-list, Patch, Mailing List, Third Party Advisory)
- lists.gnu.org/archive/html/qemu-devel/2018-11/msg02795.html (Vendor Advisory, mailing-list, Patch, Mailing List)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2019-03/msg00042.html (vendor-advisory, Mailing List, Third Party Advisory)
- www.debian.org/security/2019/dsa-4454 (vendor-advisory, Third Party Advisory)
- seclists.org/bugtraq/2019/May/76 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-19364?
- CVE-2018-19364 is a medium-severity vulnerability in Qemu, classified under Use After Free. CVSS score: 5.5/10. Published 2018-12-13.
- How severe is CVE-2018-19364?
- Medium severity. CVSS v3 base score is 5.5 out of 10.