kernel: buffer overflow with fraglist larger than MAX_SKB_FRAGS + 2 in virtio-net
Published Oct 19, 2015
6.1
MEDIUMCVSS 2.0
EPSS 1.16%
Description
The virtnet_probe function in drivers/net/virtio_net.c in the Linux kernel before 4.2 attempts to support a FRAGLIST feature without proper memory allocation, which allows guest OS users to cause a denial of service (buffer overflow and memory corruption) via a crafted sequence of fragmented packets.
Affected products
No data.
- ≤ 4.1.10
No data.
Red Hat Enterprise Linux 6
kernel-0:2.6.32-642.el6
Fixed · RHSA-2016:0855
Red Hat Enterprise Linux 7
kernel-0:3.10.0-229.20.1.ael7b
Fixed · RHSA-2015:1978
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-229.20.1.rt56.141.14.el7_1
Fixed · RHSA-2015:1977
Red Hat Enterprise Linux 5
kernel
Will not fix
Red Hat Enterprise MRG 2
realtime-kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-642.el6 | Fixed | RHSA-2016:0855 |
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-229.20.1.ael7b | Fixed | RHSA-2015:1978 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-229.20.1.rt56.141.14.el7_1 | Fixed | RHSA-2015:1977 |
| Red Hat Enterprise Linux 5 | kernel | Will not fix | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the Linux kernel packages as shipped with Red Hat Enterprise MRG 2. This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 5. Red Hat Enterprise Linux 5 is now in Production 3 Phase of the support and maintenance life cycle. This has been rated as having Moderate security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.
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:A/AC:L/Au:N/C:N/I:N/A:C
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 | 1.16% (0.01164) | 66.09th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.16% (0.01164) | 63.04th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.22% (0.00221) | 42.69th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.24% (0.00238) | 62.75th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.24% (0.00238) | 62.03th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.24% (0.00238) | 60.03th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02686) | 82.85th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.69% (0.02686) | 81.17th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.69% (0.02686) | 62.66th | v2 (v2022.01.01) |
References (21)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=48900cb6af4282fa0fb6ff4d72a81aa3dadb5c39 x_refsource_CONFIRM
- http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171454.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169378.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00009.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00018.html vendor-advisoryx_refsource_SUSE
- http://rhn.redhat.com/errata/RHSA-2015-1978.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2016-0855.html vendor-advisoryx_refsource_REDHAT
- http://www.debian.org/security/2015/dsa-3364 vendor-advisoryx_refsource_DEBIAN
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html x_refsource_CONFIRM
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html x_refsource_CONFIRM
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/76230 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1034045 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-2773-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2774-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2777-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2015-5156 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1243852 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/48900cb6af4282fa0fb6ff4d72a81aa3dadb5c39 x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2015-5156
- https://www.cve.org/CVERecord?id=CVE-2015-5156
Change history (0)
No recorded changes yet.