QEMU: sdhci: buffer data port register off-by-one read/write
Published Nov 7, 2022
8.6
HIGHCVSS 3.1
EPSS 0.87%
Description
An off-by-one read/write issue was found in the SDHCI device of QEMU. It occurs when reading/writing the Buffer Data Port Register in sdhci_read_dataport and sdhci_write_dataport, respectively, if data_count == block_size. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.
Affected products
- Vendor n/a Product QEMU Defaultn/a
- Version Affected: up to latest v7.1.0-rc4StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | QEMU | n/a |
|
No data.
Red Hat Enterprise Linux 6
qemu-kvm
Not affected
Red Hat Enterprise Linux 7
qemu-kvm
Not affected
Red Hat Enterprise Linux 7
qemu-kvm-ma
Not affected
Red Hat Enterprise Linux 8
virt:rhel/qemu-kvm
Not affected
Red Hat Enterprise Linux 8 Advanced Virtualization
virt:8.2/qemu-kvm
Not affected
Red Hat Enterprise Linux 8 Advanced Virtualization
virt:av/qemu-kvm
Not affected
Red Hat Enterprise Linux 9
qemu-kvm
Not affected
Red Hat OpenStack Platform 13 (Queens)
qemu-kvm-rhev
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | qemu-kvm | Not affected | n/a |
| Red Hat Enterprise Linux 7 | qemu-kvm | Not affected | n/a |
| Red Hat Enterprise Linux 7 | qemu-kvm-ma | Not affected | n/a |
| Red Hat Enterprise Linux 8 | virt:rhel/qemu-kvm | Not affected | n/a |
| Red Hat Enterprise Linux 8 Advanced Virtualization | virt:8.2/qemu-kvm | Not affected | n/a |
| Red Hat Enterprise Linux 8 Advanced Virtualization | virt:av/qemu-kvm | Not affected | n/a |
| Red Hat Enterprise Linux 9 | qemu-kvm | Not affected | n/a |
| Red Hat OpenStack Platform 13 (Queens) | qemu-kvm-rhev | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This flaw does not affect the versions of `qemu-kvm` as shipped with Red Hat Enterprise Linux and RHEL Advanced Virtualization, as they do not include support for SDHCI device emulation.
References (7)
- https://access.redhat.com/security/cve/CVE-2022-3872 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2140567 Issue Tracking
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-43209 Advisory
- https://lists.nongnu.org/archive/html/qemu-devel/2022-11/msg01068.html Mailing ListPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2022-3872
- https://security.netapp.com/advisory/ntap-20221215-0005/ Third Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2022-3872
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2022-3872 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2140567 | Issue Tracking | |
| https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-43209 | Advisory | |
| https://lists.nongnu.org/archive/html/qemu-devel/2022-11/msg01068.html | Mailing ListPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2022-3872 | ||
| https://security.netapp.com/advisory/ntap-20221215-0005/ | Third Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2022-3872 |
Change history (0)
No recorded changes yet.