7.4

CVE-2011-1751: qemu Improper Input Validation

Modified
AliasesDSA-2241-1
Published 21-06-2012Last modified 06-08-2024

Vulnerability summary

CVE-2011-1751 is a high (CVSS 7.4) Improper Input Validation vulnerability in qemu. EPSS estimates a 0.74% chance of exploitation in the next 30 days, higher than 54.7% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.4, adjacent network); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.4/10
010
High · v2.0 (NVD)
EPSS score
0.74%
0%100%
Low · -0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1
RHSA-2011:0534

Timeline

  1. 21-06-2012
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

The pciej_write function in hw/acpi_piix4.c in the PIIX4 Power Management emulation in qemu-kvm does not check if a device is hotpluggable before unplugging the PCI-ISA bridge, which allows privileged guest users to cause a denial of service (guest crash) and possibly execute arbitrary code by sending a crafted value to the 0xae08 (PCI_EJ_BASE) I/O port, which leads to a use-after-free related to "active qemu timers."

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

0.74%

Chance of exploitation in the next 30 days

Percentile

55%

Versus all other CVEs

30-day change

Decrease -0.01 pp

From 0.75% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: adjacent network, authentication (CVSS vector). Other conditions: not stated in public data.

Debian1 product
  • qemu-kvm< 0.12.5+dfsg-5+squeeze2
Qemu1 product
  • qemu0.1.0 | 0.1.1 | 0.1.2 | 0.1.3 | 0.1.4 | 0.1.5 | 0.1.6 | 0.2.0 | 0.3.0 | 0.4.0 | 0.4.1 | 0.4.2 | 0.4.3 | 0.5.0 | 0.5.1 | 0.5.2 | 0.5.3 | 0.5.4 | 0.5.5 | 0.6.0 | 0.6.1 | 0.7.0 | 0.7.1 | 0.7.2 | 0.8.0 | 0.8.1 | 0.8.2 | 0.9.0 | 0.9.1 | 0.9.1-5 | 0.10.0 | 0.10.1 | 0.10.2 | 0.10.3 | 0.10.4 | 0.10.5 | 0.10.6 | 0.11.0 | 0.11.0:rc0 | 0.11.0:rc1 | 0.11.0:rc2 | 0.11.0-rc0 | 0.11.0-rc1 | 0.11.0-rc2 | 0.11.1 | 0.12.0 | 0.12.0:rc1 | 0.12.0:rc2 | 0.12.1 | 0.12.2 | 0.12.3 | 0.12.4 | 0.12.5 | 0.13.0 | 0.13.0:rc0 | 0.13.0:rc1 | 0.14.0 | 0.14.0:rc0 | 0.14.0:rc1 | 0.14.0:rc2 | 0.14.1 | 0.15.0:rc1 | 0.15.0:rc2 | 1.0 | 1.0:rc1 | 1.0:rc2 | 1.0:rc3 | 1.0:rc4 | 1.0.1 | 1.1 | 1.1:rc1 | 1.1:rc2 | 1.1:rc3 | 1.1:rc4

2 vendors · 2 products

References

18 links
Show all 18 references