{"id":"CVE-2023-4135","aliases":["BELL-CVE-2023-4135","DEBIAN-CVE-2023-4135","EUVD-2023-54017","GHSA-fw85-m9vg-m8jv"],"status":"published","title":"Out-of-bounds read information disclosure vulnerability","description":"A heap out-of-bounds memory read flaw was found in the virtual nvme device in QEMU. The QEMU process does not validate an offset provided by the guest before computing a host heap pointer, which is used for copying data back to the guest. Arbitrary heap memory relative to an allocated buffer can be disclosed.","severity":{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00372,"percentile":0.31441,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-125"],"published":"2023-08-04T13:19:15Z","modified":"2026-10-28T02:30:42Z","fixes":[{"ecosystem":"Alpaquita:23","package":"qemu","fixed_in":["9.0.2-r0"],"sources":["osv"]},{"ecosystem":"Alpaquita:stream","package":"qemu","fixed_in":["8.1.0-r0"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"qemu","fixed_in":["1:8.0.4+dfsg-2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"qemu","fixed_in":["1:8.0.4+dfsg-2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpaquita:23","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"7.1.0-r4"},{"fixed":"9.0.2-r0"}]}]},{"source":"osv","ecosystem":"Alpaquita:stream","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"8.0.2-r0"},{"fixed":"8.1.0-r0"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:8.0.4+dfsg-2"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:8.0.4+dfsg-2"}]}]}],"products":[{"vendor":"fedora","product":"extra packages for enterprise linux"},{"vendor":"fedora","product":"fedora"},{"vendor":"fedoraproject","product":"fedora"},{"vendor":"qemu","product":"qemu"},{"vendor":"red hat","product":"red hat enterprise linux 6"},{"vendor":"red hat","product":"red hat enterprise linux 7"},{"vendor":"red hat","product":"red hat enterprise linux 8"},{"vendor":"red hat","product":"red hat enterprise linux 8 advanced virtualization"},{"vendor":"red hat","product":"red hat enterprise linux 9"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2023-4135","tags":["vdb-entry","x_refsource_REDHAT","x_transferred","Third Party Advisory","advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2229101","tags":["issue-tracking","x_refsource_REDHAT","x_transferred","Issue Tracking","Patch","Third Party Advisory","report"]},{"url":"https://security.netapp.com/advisory/ntap-20230915-0012/","tags":["x_transferred","Third Party Advisory","advisory"]},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-CAN-21521","tags":["x_transferred","Broken Link","Third Party Advisory","VDB Entry","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-4135","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-fw85-m9vg-m8jv"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2023-4135","tags":["advisory"]},{"url":"https://docs.bell-sw.com/security/advisories/BELL-SA-2024-55","tags":["advisory"]},{"url":"https://access.redhat.com/downloads/content/package-browser/","tags":["web"]},{"url":"https://packages.fedoraproject.org/","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/4xxx/CVE-2023-4135.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2023-4135","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2023-4135","title":"Out-of-bounds read information disclosure vulnerability","description":"A heap out-of-bounds memory read flaw was found in the virtual nvme device in QEMU. The QEMU process does not validate an offset provided by the guest before computing a host heap pointer, which is used for copying data back to the guest. Arbitrary heap memory relative to an allocated buffer can be disclosed.","status":"published","published":"2023-08-04T13:19:15.76Z","modified":"2024-08-02T07:17:11.93Z","cvss":[{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:35:30.116696Z"}],"euvd":[{"id":"EUVD-2023-54017","description":"A heap out-of-bounds memory read flaw was found in the virtual nvme device in QEMU. The QEMU process does not validate an offset provided by the guest before computing a host heap pointer, which is used for copying data back to the guest. Arbitrary heap memory relative to an allocated buffer can be disclosed.","status":"published","published":"2023-08-04T13:19:15Z","modified":"2024-08-02T07:17:11Z","cvss":[{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T03:50:12.64889Z"}],"ghsa":[{"id":"GHSA-fw85-m9vg-m8jv","title":"A heap out-of-bounds memory read flaw was found in the virtual nvme device in QEMU. The QEMU...","description":"A heap out-of-bounds memory read flaw was found in the virtual nvme device in QEMU. The QEMU process does not validate an offset provided by the guest before computing a host heap pointer, which is used for copying data back to the guest. Arbitrary heap memory relative to an allocated buffer can be disclosed.","status":"published","published":"2023-08-04T15:30:15Z","modified":"2023-12-11T21:30:18Z","cvss":[{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:55:10.896568Z"}],"nvd":[{"id":"CVE-2023-4135","description":"A heap out-of-bounds memory read flaw was found in the virtual nvme device in QEMU. The QEMU process does not validate an offset provided by the guest before computing a host heap pointer, which is used for copying data back to the guest. Arbitrary heap memory relative to an allocated buffer can be disclosed.","status":"published","published":"2023-08-04T14:15:12.173Z","modified":"2026-06-17T06:37:09.47Z","cvss":[{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:08:20.798312Z"}],"osv":[{"id":"BELL-CVE-2023-4135","status":"published","published":"2023-08-04T14:15:00Z","modified":"2026-01-26T09:33:36.008663Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:28:17.742221Z"},{"id":"CVE-2023-4135","title":"Out-of-bounds read information disclosure vulnerability","description":"A heap out-of-bounds memory read flaw was found in the virtual nvme device in QEMU. The QEMU process does not validate an offset provided by the guest before computing a host heap pointer, which is used for copying data back to the guest. Arbitrary heap memory relative to an allocated buffer can be disclosed.","status":"published","published":"2023-08-04T13:19:15.76Z","modified":"2026-10-28T02:30:42.43985359Z","cvss":[{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:44:33.244128Z"},{"id":"DEBIAN-CVE-2023-4135","description":"A heap out-of-bounds memory read flaw was found in the virtual nvme device in QEMU. The QEMU process does not validate an offset provided by the guest before computing a host heap pointer, which is used for copying data back to the guest. Arbitrary heap memory relative to an allocated buffer can be disclosed.","status":"published","published":"2023-08-04T14:15:12.173Z","modified":"2026-10-26T18:02:32.488494918Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:39.980321Z"}]}}