hw/net/xgmac.c in the XGMAC Ethernet controller in QEMU before 07-20-2020 has a buffer overflow. This occurs during packet transmission and affects the highbank and midway emulated machines. A guest user or process could use this flaw to crash the QEMU process on the host, resulting in a denial of service or potential privileged code execution. This was fixed in commit 5519724a13664b43e225ca05351c60b4468e4555.
The product writes data past the end, or before the beginning, of the intended buffer.
| Link | Tags |
|---|---|
| https://lists.nongnu.org/archive/html/qemu-devel/2020-07/msg03497.html | patch mailing list third party advisory |
| http://www.openwall.com/lists/oss-security/2020/07/22/1 | patch mailing list third party advisory |
| https://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=5519724a13664b43e225ca05351c60b4468e4555 | |
| https://lists.nongnu.org/archive/html/qemu-devel/2020-07/msg05745.html | patch mailing list third party advisory |
| https://usn.ubuntu.com/4467-1/ | third party advisory vendor advisory |
| https://www.debian.org/security/2020/dsa-4760 | third party advisory vendor advisory |
| http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00024.html | vendor advisory mailing list third party advisory |
| https://security.gentoo.org/glsa/202208-27 | third party advisory vendor advisory |