Use After Free in Qemu
CVE-2020-15859
QEMU 4.2.0 has a use-after-free in hw/net/e1000e_core.c because a guest OS user can trigger an e1000e packet with the data's address set to the e1000e's MMIO address.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.004 (35.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Qemu — versions 4.2.0
- Debian Linux — versions 9.0, 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugs.launchpad.net/qemu/+bug/1886362 (Exploit, Third Party Advisory, Issue Tracking)
- lists.gnu.org/archive/html/qemu-devel/2020-07/msg05304.html (Patch, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/07/21/3 (mailing-list, Patch, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2021/02/msg00024.html (mailing-list, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/202208-27 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2022/09/msg00008.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-15859?
- CVE-2020-15859 is a low-severity vulnerability in Qemu, classified under Use After Free. CVSS score: 3.3/10. Published 2020-07-21.
- How severe is CVE-2020-15859?
- Low severity. CVSS v3 base score is 3.3 out of 10.
- Is CVE-2020-15859 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.