Back

HIGH

Qemu: block: multiple integer overflow flaws

Published Aug 10, 2017

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.

Affected products

Remediation

No remediation recorded yet.

Metrics

References (14)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Aug 10, 2017
Updated Aug 6, 2024
Reserved Dec 3, 2013
NVD
Status Modified
Modified Jun 17, 2026
Red Hat
Severity Moderate
Public date Mar 26, 2014