{"id":"CVE-2019-20808","aliases":["BELL-CVE-2019-20808","DEBIAN-CVE-2019-20808","EUVD-2019-11345","GHSA-p8fx-hg9x-79mx","OESA-2021-1072","UBUNTU-CVE-2019-20808"],"status":"published","title":"In QEMU 4.1.0, an out-of-bounds read flaw was found in the ATI VGA implementation. It occurs in...","description":"In QEMU 4.1.0, an out-of-bounds read flaw was found in the ATI VGA implementation. It occurs in the ati_cursor_define() routine while handling MMIO write operations through the ati_mm_write() callback. A malicious guest could abuse this flaw to crash the QEMU process, resulting in a denial of service.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00334,"percentile":0.26958,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-125"],"published":"2020-12-31T00:26:39Z","modified":"2026-10-24T10:31:03Z","fixes":[{"ecosystem":"Debian:12","package":"qemu","fixed_in":["1:4.2-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"qemu","fixed_in":["1:4.2-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"qemu","fixed_in":["1:4.2-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:4.2-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:4.2-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:4.2-1"}]}]},{"source":"osv","ecosystem":"openEuler:20.03-LTS","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.0-35.oe1"}]}],"bundled":3},{"source":"osv","ecosystem":"openEuler:20.03-LTS-SP1","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.0-35.oe1"}]}],"bundled":3}],"products":[{"vendor":"qemu","product":"qemu"}],"references":[{"url":"https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=aab0e2a661b2b6bf7915c0aefe807fb60d6d9d13","tags":["x_refsource_MISC","x_transferred","web"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1841136","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Third Party Advisory","report"]},{"url":"https://security.netapp.com/advisory/ntap-20210205-0003/","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-20808","tags":["advisory"]},{"url":"https://git.qemu.org/?p=qemu.git;a=commit;h=aab0e2a661b2b6bf7915c0aefe807fb60d6d9d13"},{"url":"https://github.com/advisories/GHSA-p8fx-hg9x-79mx"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2019-20808","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2019-20808","tags":["advisory"]},{"url":"https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1072","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-13754","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-17380","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2019-20808","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-20808","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2019-20808","description":"In QEMU 4.1.0, an out-of-bounds read flaw was found in the ATI VGA implementation. It occurs in the ati_cursor_define() routine while handling MMIO write operations through the ati_mm_write() callback. A malicious guest could abuse this flaw to crash the QEMU process, resulting in a denial of service.","status":"published","published":"2020-12-31T00:26:39Z","modified":"2024-08-05T02:53:09.254Z","updated_at":"2026-11-02T14:20:17.431882Z"}],"euvd":[{"id":"EUVD-2019-11345","description":"In QEMU 4.1.0, an out-of-bounds read flaw was found in the ATI VGA implementation. It occurs in the ati_cursor_define() routine while handling MMIO write operations through the ati_mm_write() callback. A malicious guest could abuse this flaw to crash the QEMU process, resulting in a denial of service.","status":"published","published":"2020-12-31T00:26:39Z","modified":"2024-08-05T02:53:09Z","updated_at":"2026-11-03T02:40:20.727542Z"}],"ghsa":[{"id":"GHSA-p8fx-hg9x-79mx","title":"In QEMU 4.1.0, an out-of-bounds read flaw was found in the ATI VGA implementation. It occurs in...","description":"In QEMU 4.1.0, an out-of-bounds read flaw was found in the ATI VGA implementation. It occurs in the ati_cursor_define() routine while handling MMIO write operations through the ati_mm_write() callback. A malicious guest could abuse this flaw to crash the QEMU process, resulting in a denial of service.","status":"published","published":"2022-05-24T17:37:34Z","modified":"2023-01-29T05:05:10Z","cwes":["CWE-125"],"updated_at":"2026-11-02T14:45:43.481618Z"}],"nvd":[{"id":"CVE-2019-20808","description":"In QEMU 4.1.0, an out-of-bounds read flaw was found in the ATI VGA implementation. It occurs in the ati_cursor_define() routine while handling MMIO write operations through the ati_mm_write() callback. A malicious guest could abuse this flaw to crash the QEMU process, resulting in a denial of service.","status":"published","published":"2020-12-31T01:15:12.427Z","modified":"2026-06-17T02:31:13.98Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:P","level":"low","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:05:48.502374Z"}],"osv":[{"id":"BELL-CVE-2019-20808","title":"CVE-2019-20808 does not affect BellSoft software","status":"withdrawn","published":"2020-12-31T01:15:00Z","modified":"2026-01-26T09:47:59.819276Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:28:15.340685Z"},{"id":"CVE-2019-20808","description":"In QEMU 4.1.0, an out-of-bounds read flaw was found in the ATI VGA implementation. It occurs in the ati_cursor_define() routine while handling MMIO write operations through the ati_mm_write() callback. A malicious guest could abuse this flaw to crash the QEMU process, resulting in a denial of service.","status":"published","published":"2020-12-31T01:15:12.427Z","modified":"2026-10-24T10:31:03.015369346Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:12.010761Z"},{"id":"DEBIAN-CVE-2019-20808","description":"In QEMU 4.1.0, an out-of-bounds read flaw was found in the ATI VGA implementation. It occurs in the ati_cursor_define() routine while handling MMIO write operations through the ati_mm_write() callback. A malicious guest could abuse this flaw to crash the QEMU process, resulting in a denial of service.","status":"published","published":"2020-12-31T01:15:12.427Z","modified":"2026-09-21T07:03:17.936992963Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:32.221385Z"},{"id":"OESA-2021-1072","title":"qemu security update","description":"QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed.\n\r\nSecurity Fix(es):\n\r\nhw/pci/msix.c in QEMU 4.2.0 allows guest OS users to trigger an out-of-bounds access via a crafted address in an msi-x mmio operation.(CVE-2020-13754)\n\nIn QEMU 4.1.0, an out-of-bounds read flaw was found in the ATI VGA implementation. It occurs in the ati_cursor_define() routine while handling MMIO write operations through the ati_mm_write() callback. A malicious guest could abuse this flaw to crash the QEMU process, resulting in a denial of service.(CVE-2019-20808)\n\nA heap-based buffer overflow was found in QEMU through 5.0.0 in the SDHCI device emulation support. It could occur while doing a multi block SDMA transfer via the sdhci_sdma_transfer_multi_blocks() routine in hw/sd/sdhci.c. A guest user or process could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition, or potentially execute arbitrary code with privileges of the QEMU process on the host.(CVE-2020-17380)","status":"published","published":"2021-03-05T11:04:18Z","modified":"2026-08-18T01:15:20.119701621Z","cvss":[{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium"}],"updated_at":"2026-11-02T15:52:38.987987Z"},{"id":"UBUNTU-CVE-2019-20808","description":"In QEMU 4.1.0, an out-of-bounds read flaw was found in the ATI VGA implementation. It occurs in the ati_cursor_define() routine while handling MMIO write operations through the ati_mm_write() callback. A malicious guest could abuse this flaw to crash the QEMU process, resulting in a denial of service.","status":"withdrawn","published":"2020-12-31T01:15:00Z","modified":"2025-07-16T07:19:09.24089Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:21.213407Z"}]}}