CVE-2020-13800: canonical ubuntu_linux Uncontrolled Recursion
Vulnerability summary
CVE-2020-13800 is a medium (CVSS 6.0) Uncontrolled Recursion vulnerability in canonical ubuntu_linux. EPSS estimates a 0.49% chance of exploitation in the next 30 days, higher than 41.9% of scored vulnerabilities.
Not severe (CVSS 6, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 4 · Related 4Timeline
- 04-06-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
ati-vga in hw/display/ati.c in QEMU 4.2.0 allows guest OS users to trigger infinite recursion via a crafted mm_index value during an ati_mm_read or ati_mm_write call.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated6.0MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated6.0MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
- OSV · AlpineEcosystem advisory · calculated6.0MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
EPSS trend
Probability
0.49%
Chance of exploitation in the next 30 days
Percentile
42%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.49% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, administrative account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Alpine1 product
- qemu< 5.0.0-r0
Canonical1 product
- ubuntu_linuxEOL16.04 | 18.04 | 20.04
Debian1 product
- qemu< 1:5.0-6
Opensuse1 product
- leapEOL15.2
Qemu1 product
- qemu4.2.0
Ubuntu1 product
- qemu< 1:4.2-3ubuntu6.4
6 vendors · 6 products
References
15 links- lists.gnu.org/archive/html/qemu-devel/2020-06/msg00825.htmlX Refsource MISCREPORTMailing ListVendor Advisory
- www.openwall.com/lists/oss-security/2020/06/04/2X Refsource CONFIRMREPORTMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00086.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
