kernel-rt: Sending SysRq command via ICMP echo request
Published Jun 27, 2016
8.1
HIGHCVSS 3.0
EPSS 3.39%
Description
The icmp_check_sysrq function in net/ipv4/icmp.c in the kernel.org projects/rt patches for the Linux kernel, as used in the kernel-rt package before 3.10.0-327.22.1 in Red Hat Enterprise Linux for Real Time 7 and other products, allows remote attackers to execute SysRq commands via crafted ICMP Echo Request packets, as demonstrated by a brute-force attack to discover a cookie, or an attack that occurs after reading the local icmp_echo_sysrq file.
Affected products
No data.
Configuration 1
- ≤ 3.10.0
- 7
- 7
Configuration 2
No data.
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-327.22.2.rt56.230.el7_2
Fixed · RHSA-2016:1301
Red Hat Enterprise MRG 2
kernel-rt-1:3.10.0-327.rt56.190.el6rt
Fixed · RHSA-2016:1341
Red Hat Enterprise Linux 4
kernel
Not affected
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-327.22.2.rt56.230.el7_2 | Fixed | RHSA-2016:1301 |
| Red Hat Enterprise MRG 2 | kernel-rt-1:3.10.0-327.rt56.190.el6rt | Fixed | RHSA-2016:1341 |
| Red Hat Enterprise Linux 4 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the Linux kernels as shipped with Red Hat Enterprise Linux 5, 6 and 7. This issue affects the Linux kernel-rt packages as shipped with Red Hat Enterprise Linux 7 and MRG-2 and may be addressed in a future update.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:M/Au:N/C:P/I:P/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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.39% (0.03387) | 88.40th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.39% (0.03387) | 87.20th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.87% (0.01874) | 81.50th | v4 (v2025.03.14) |
| Mar 29, 2025 | 4.36% (0.04360) | 81.23th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.87% (0.01874) | 81.91th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.68% (0.02683) | 90.81th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.68% (0.02683) | 88.78th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.32% (0.01319) | 70.74th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.41% (0.01408) | 72.21th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
References (10)
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00007.html vendor-advisoryx_refsource_SUSE
- http://www.openwall.com/lists/oss-security/2016/05/17/1 mailing-listx_refsource_MLIST
- https://access.redhat.com/errata/RHSA-2016:1301 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2016:1341 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2016-3707 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1327484 x_refsource_CONFIRMIssue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2016-3707
- https://www.cve.org/CVERecord?id=CVE-2016-3707
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html | vendor-advisoryx_refsource_SUSEThird Party Advisory | |
| http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html | vendor-advisoryx_refsource_SUSEThird Party Advisory | |
| http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00007.html | vendor-advisoryx_refsource_SUSE | |
| http://www.openwall.com/lists/oss-security/2016/05/17/1 | mailing-listx_refsource_MLIST | |
| https://access.redhat.com/errata/RHSA-2016:1301 | vendor-advisoryx_refsource_REDHATThird Party Advisory | |
| https://access.redhat.com/errata/RHSA-2016:1341 | vendor-advisoryx_refsource_REDHATThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2016-3707 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1327484 | x_refsource_CONFIRMIssue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2016-3707 | ||
| https://www.cve.org/CVERecord?id=CVE-2016-3707 |
Change history (0)
No recorded changes yet.