qemu: slirp: NULL pointer deref in sosendto()
Published Nov 7, 2014
2.1
LOWCVSS 2.0
EPSS 0.40%
Description
The sosendto function in slirp/udp.c in QEMU before 2.1.2 allows local users to cause a denial of service (NULL pointer dereference) by sending a udp packet with a value of 0 in the source port and address, which triggers access of an uninitialized socket.
Affected products
No data.
Configuration 1
- 7.0
Configuration 2
- 2.0.0
- 2.0.0
- 2.0.0
- 2.0.0
- 2.0.0
- 2.0.2
- 2.1.0
- 2.1.0
- 2.1.0
- 2.1.0
- 2.1.0
- 2.1.0
- 2.1.1
Configuration 3
- 7.0
- 7.0
- 7.0
- 7.0
Configuration 4
- 10.04
- 12.04
- 14.04
- 14.10
No data.
RHEV 3.X Hypervisor and Agents for RHEL-7
qemu-kvm-rhev-10:2.1.2-23.el7
Fixed · RHSA-2015:0624
Red Hat Enterprise Linux 7
qemu-kvm-10:1.5.3-86.el7
Fixed · RHSA-2015:0349
Red Hat Enterprise Linux 5
kvm
Not affected
Red Hat Enterprise Linux 6
qemu-kvm
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| RHEV 3.X Hypervisor and Agents for RHEL-7 | qemu-kvm-rhev-10:2.1.2-23.el7 | Fixed | RHSA-2015:0624 |
| Red Hat Enterprise Linux 7 | qemu-kvm-10:1.5.3-86.el7 | Fixed | RHSA-2015:0349 |
| Red Hat Enterprise Linux 5 | kvm | Not affected | n/a |
| Red Hat Enterprise Linux 6 | qemu-kvm | Affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the kvm package as shipped with Red Hat Enterprise Linux 5. Red Hat Product Security has rated this issue as having Low security impact. Future qemu-kvm updates for Red Hat Enterprise Linux 6 and 7 may address this issue. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.40% (0.00405) | 32.32th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.40% (0.00405) | 32.00th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.06% (0.00059) | 15.60th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.28% (0.01282) | 68.34th | v2 (v2022.01.01) |
| Feb 22, 2023 | 1.28% (0.01282) | 68.05th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.28% (0.01282) | 65.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.28% (0.01282) | 41.72th | v2 (v2022.01.01) |
References (12)
- http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg03543.html mailing-listx_refsource_MLISTPatchVendor Advisory
- http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg04598.html mailing-listx_refsource_MLISTPatchVendor Advisory
- http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg04707.html mailing-listx_refsource_MLISTPatchVendor Advisory
- http://rhn.redhat.com/errata/RHSA-2015-0349.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2015-0624.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://www.debian.org/security/2014/dsa-3044 vendor-advisoryx_refsource_DEBIAN
- http://www.debian.org/security/2014/dsa-3045 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.ubuntu.com/usn/USN-2409-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2014-3640 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1144818 x_refsource_CONFIRMIssue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2014-3640
- https://www.cve.org/CVERecord?id=CVE-2014-3640
Change history (0)
No recorded changes yet.