CVE & CISA-KEV Catalog

CVE-2014-0143

HIGH
7.0
CVSS v3
NVD

Description

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.

CWE-190Integer Overflow

How to fix

Remediation Available
qemuDebian
Fixed in:2.0.0+dfsg-1CVE-2014-0143
Fixed in:2.0.0+dfsg-1CVE-2014-0143
Fixed in:2.0.0+dfsg-1CVE-2014-0143
Fixed in:2.0.0+dfsg-1CVE-2014-0143
qemuUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.3USN-2342-1
qemu-systemUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.3USN-2342-1
qemu-system-aarch64Ubuntu
Fixed in:2.0.0+dfsg-2ubuntu1.3USN-2342-1
qemu-system-armUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.3USN-2342-1
qemu-system-mipsUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.3USN-2342-1
qemu-system-miscUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.3USN-2342-1
qemu-system-ppcUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.3USN-2342-1
qemu-system-sparcUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.3USN-2342-1
qemu-system-x86Ubuntu
Fixed in:2.0.0+dfsg-2ubuntu1.3USN-2342-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityHigh
Privileges RequiredLow
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

0.40%probability of exploitation in 30 days
32ndpercentile

Low risk: more likely to be exploited than 32% of all known CVEs.

References

Third-Party Advisory2

Related Vulnerabilities

Other CWE-190 (Integer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2020-16040Medium6.5100%-Fix
CVE-2019-11477High7.599%-Fix
CVE-2023-44443High7.894%-Fix
CVE-2014-0569High9.390%--
CVE-2017-3599High7.590%-Fix
CVE-2023-21716Critical9.882%-Fix
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.