CVE-2021-3748 (GCVE-0-2021-3748)
Vulnerability from cvelistv5
Published
2022-03-23 19:46
Modified
2024-08-03 17:09
Severity ?
Summary
A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the descriptor's address belongs to the non direct access region, due to num_buffers being set after the virtqueue elem has been unmapped. A malicious guest could use this flaw to crash QEMU, resulting in a denial of service condition, or potentially execute code on the host with the privileges of the QEMU process.
References
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1998514Issue Tracking, Patch, Third Party Advisory
secalert@redhat.comhttps://github.com/qemu/qemu/commit/bedd7e93d01961fcb16a97ae45d93acf357e11f6Patch, Third Party Advisory
secalert@redhat.comhttps://lists.debian.org/debian-lts-announce/2022/04/msg00002.htmlMailing List, Third Party Advisory
secalert@redhat.comhttps://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlMailing List, Third Party Advisory
secalert@redhat.comhttps://lists.nongnu.org/archive/html/qemu-devel/2021-09/msg00388.htmlMailing List, Patch, Third Party Advisory
secalert@redhat.comhttps://security.gentoo.org/glsa/202208-27Third Party Advisory
secalert@redhat.comhttps://security.netapp.com/advisory/ntap-20220425-0004/Third Party Advisory
secalert@redhat.comhttps://ubuntu.com/security/CVE-2021-3748Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1998514Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/qemu/qemu/commit/bedd7e93d01961fcb16a97ae45d93acf357e11f6Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/04/msg00002.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.nongnu.org/archive/html/qemu-devel/2021-09/msg00388.htmlMailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202208-27Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20220425-0004/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://ubuntu.com/security/CVE-2021-3748Patch, Third Party Advisory
Impacted products
Vendor Product Version
n/a QEMU (virtio-net) Version: Affects qemu v0.10.0 and above, Fixed In – v6.2.0-rc0 and above.
Show details on NVD website

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