A NULL pointer dereference flaw was found in the am53c974 SCSI host bus adapter emulation of QEMU in versions before 6.0.0. This issue occurs while handling the Information Transfer command. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
Weakness
The product dereferences a pointer that it expects to be valid but is NULL.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Qemu | Qemu | * | 6.0.0 (excluding) |
| Qemu | Qemu | 6.0.0-rc1 (including) | 6.0.0-rc1 (including) |
| Qemu | Qemu | 6.0.0-rc2 (including) | 6.0.0-rc2 (including) |
| Qemu | Ubuntu | bionic | * |
| Qemu | Ubuntu | devel | * |
| Qemu | Ubuntu | esm-infra-legacy/trusty | * |
| Qemu | Ubuntu | esm-infra/bionic | * |
| Qemu | Ubuntu | esm-infra/focal | * |
| Qemu | Ubuntu | esm-infra/xenial | * |
| Qemu | Ubuntu | focal | * |
| Qemu | Ubuntu | groovy | * |
| Qemu | Ubuntu | hirsute | * |
| Qemu | Ubuntu | impish | * |
| Qemu | Ubuntu | jammy | * |
| Qemu | Ubuntu | kinetic | * |
| Qemu | Ubuntu | lunar | * |
| Qemu | Ubuntu | mantic | * |
| Qemu | Ubuntu | noble | * |
| Qemu | Ubuntu | oracular | * |
| Qemu | Ubuntu | plucky | * |
| Qemu | Ubuntu | questing | * |
| Qemu | Ubuntu | trusty | * |
| Qemu | Ubuntu | trusty/esm | * |
| Qemu | Ubuntu | xenial | * |
| Qemu-kvm | Ubuntu | precise/esm | * |
Potential Mitigations
References
- http://www.openwall.com/lists/oss-security/2021/04/16/3
- https://bugzilla.redhat.com/show_bug.cgi?id=1909769
- https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html
- https://security.gentoo.org/glsa/202208-27
- https://security.netapp.com/advisory/ntap-20210713-0006/
- https://www.openwall.com/lists/oss-security/2021/04/16/3
- http://www.openwall.com/lists/oss-security/2021/04/16/3
- https://bugzilla.redhat.com/show_bug.cgi?id=1909769
- https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html
- https://security.gentoo.org/glsa/202208-27
- https://security.netapp.com/advisory/ntap-20210713-0006/
- https://www.openwall.com/lists/oss-security/2021/04/16/3