Multiple integer overflows in the block drivers in QEMU, possibly before 2.0.0, allow…
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 8 fixed, 2 without a fix
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-190 and the CVSS impact.
Summary
Multiple integer overflows in the block drivers in QEMU, possibly before 2.0.0, allow local users to cause a denial of service (crash) via a crafted catalog size in (1) the parallels_open function in block/parallels.c or (2) bochs_open function in bochs.c, a large L1 table in the (3) qcow2_snapshot_load_tmp in qcow2-snapshot.c or (4) qcow2_grow_l1_table function in qcow2-cluster.c, (5) a large request in the bdrv_check_byte_request function in block.c and other block drivers, (6) crafted cluster indexes in the get_refcount function in qcow2-refcount.c, or (7) a large number of blocks in the cloop_open function in cloop.c, which trigger buffer overflows, memory corruption, large memory allocations and out-of-bounds read and writes.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
Red Hat 5 advisories
- RHSA-2014:0674 Released 2014-06-09 · Red Hat rating Moderaterhev-hypervisor6 3.4.0 security, bug fix, and enhancement update
- RHEV Hypervisor for RHEL-6 rhev-hypervisor6-6.5-20140603.2.el6ev
- RHSA-2014:0434 Released 2014-04-24 · Red Hat rating Moderateqemu-kvm-rhev security update
- Red Hat Enterprise Linux OpenStack Platform 4.0 qemu-img-rhev-2:0.12.1.2-2.415.el6_5.8, qemu-kvm-rhev-2:0.12.1.2-2.415.el6_5.8, qemu-kvm-rhev-tools-2:0.12.1.2-2.415.el6_5.8
- RHSA-2014:0435 Released 2014-04-24 · Red Hat rating Moderateqemu-kvm-rhev security update
- Red Hat Enterprise Linux OpenStack Platform 3.0 qemu-img-rhev-2:0.12.1.2-2.415.el6_5.8, qemu-kvm-rhev-2:0.12.1.2-2.415.el6_5.8, qemu-kvm-rhev-tools-2:0.12.1.2-2.415.el6_5.8
Show 2 more Red Hat advisories
- RHSA-2014:0420 Released 2014-04-22 · Red Hat rating Moderateqemu-kvm security update
- Red Hat Enterprise Linux Desktop (v. 6) qemu-guest-agent-2:0.12.1.2-2.415.el6_5.8, qemu-img-2:0.12.1.2-2.415.el6_5.8, qemu-kvm-2:0.12.1.2-2.415.el6_5.8 +1
- Red Hat Enterprise Linux HPC Node (v. 6) qemu-guest-agent-2:0.12.1.2-2.415.el6_5.8, qemu-img-2:0.12.1.2-2.415.el6_5.8, qemu-kvm-2:0.12.1.2-2.415.el6_5.8 +1
- Red Hat Enterprise Linux Server (v. 6) qemu-guest-agent-2:0.12.1.2-2.415.el6_5.8, qemu-img-2:0.12.1.2-2.415.el6_5.8, qemu-kvm-2:0.12.1.2-2.415.el6_5.8 +1
- Red Hat Enterprise Linux Workstation (v. 6) qemu-guest-agent-2:0.12.1.2-2.415.el6_5.8, qemu-img-2:0.12.1.2-2.415.el6_5.8, qemu-kvm-2:0.12.1.2-2.415.el6_5.8 +1
- RHSA-2014:0421 Released 2014-04-22 · Red Hat rating Moderateqemu-kvm-rhev security update
- RHEV Agents (vdsm) qemu-img-rhev-2:0.12.1.2-2.415.el6_5.8, qemu-kvm-rhev-2:0.12.1.2-2.415.el6_5.8, qemu-kvm-rhev-tools-2:0.12.1.2-2.415.el6_5.8
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse) | Affected | No fix yet |
| RHEV Agents (vdsm) | Fixed | RHSA-2014:0421 |
| RHEV Hypervisor for RHEL-6 | Fixed | RHSA-2014:0674 |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2014:0420 |
| Red Hat Enterprise Linux HPC Node (v. 6) | Fixed | RHSA-2014:0420 |
| Red Hat Enterprise Linux OpenStack Platform 3.0 | Fixed | RHSA-2014:0435 |
| Red Hat Enterprise Linux OpenStack Platform 4.0 | Fixed | RHSA-2014:0434 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2014:0420 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2014:0420 |
Not affected: 1 product
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2014-0143
- 2026-10-03 Alias added: GHSA-p7h7-ff68-wgx2
References
Advisory 3
Other 7
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=6a83f8b5bec6f59e56cc49bd49e4c3f8f805d56f
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=e3737b820b45e54b059656dc3f914f895ac7a88b
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=afbcc40bee4ef51731102d7d4b499ee12fc182e1
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=509a41bab5306181044b5fff02eadf96d9c8676a
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=8f4754ede56e3f9ea3fd7207f4a7c4453e59285b
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=db8a31d11d6a60f48d6817530640d75aa72a9a2f
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=cab60de930684c33f67d4e32c7509b567f8c445b
Sources
- CVE-2014-0143 · CVE Program
- CVE-2014-0143 · NVD
- FIRST EPSS
- GHSA-p7h7-ff68-wgx2 · GitHub Advisory Database · CC BY 4.0
- CVE-2014-0143 · Red Hat security data · CC BY 4.0
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