kernel: Use-after-free in sys_mq_notify()
Published Jul 11, 2017
7.8
HIGHCVSS 3.1
EPSS 3.82%
Description
The mq_notify function in the Linux kernel through 4.11.9 does not set the sock pointer to NULL upon entry into the retry logic. During a user-space close of a Netlink socket, it allows attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact.
Affected products
No data.
Configuration 1
- < 3.2.92
- ≥ 3.3 · < 3.16.47
- ≥ 3.17 · < 3.18.61
- ≥ 3.19 · < 4.1.43
- ≥ 4.2 · < 4.4.77
- ≥ 4.5 · < 4.9.38
- ≥ 4.10 · < 4.11.11
- ≥ 4.12 · < 4.12.2
Configuration 2
- 8.0
- 9.0
No data.
Red Hat Enterprise Linux 5 Extended Lifecycle Support
kernel-0:2.6.18-436.el5
Fixed · RHSA-2018:3822
Red Hat Enterprise Linux 6
kernel-0:2.6.32-696.20.1.el6
Fixed · RHSA-2018:0169
Red Hat Enterprise Linux 7
kernel-0:3.10.0-693.5.2.el7
Fixed · RHSA-2017:2930
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-693.5.2.rt56.626.el7
Fixed · RHSA-2017:2931
Red Hat Enterprise MRG 2
kernel-rt-1:3.10.0-693.5.2.rt56.592.el6rt
Fixed · RHSA-2017:2918
Red Hat Enterprise Linux 7
kernel-alt
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 Extended Lifecycle Support | kernel-0:2.6.18-436.el5 | Fixed | RHSA-2018:3822 |
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-696.20.1.el6 | Fixed | RHSA-2018:0169 |
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-693.5.2.el7 | Fixed | RHSA-2017:2930 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-693.5.2.rt56.626.el7 | Fixed | RHSA-2017:2931 |
| Red Hat Enterprise MRG 2 | kernel-rt-1:3.10.0-693.5.2.rt56.592.el6rt | Fixed | RHSA-2017:2918 |
| Red Hat Enterprise Linux 7 | kernel-alt | Affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 5,6,7 and MRG-2. Future Linux kernel updates for the respective releases may address this issue.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AV:L/AC:L/Au:N/C:C/I:C/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
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (26 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.82% (0.03815) | 89.72th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.63% (0.03631) | 88.03th | v5 (v2026.06.15) |
| Jun 13, 2026 | 18.74% (0.18743) | 95.45th | v4 (v2025.03.14) |
| Jun 11, 2026 | 22.01% (0.22013) | 95.91th | v4 (v2025.03.14) |
| Apr 22, 2026 | 20.81% (0.20809) | 95.63th | v4 (v2025.03.14) |
| Apr 21, 2026 | 19.22% (0.19221) | 95.38th | v4 (v2025.03.14) |
| Mar 30, 2026 | 17.67% (0.17668) | 95.07th | v4 (v2025.03.14) |
| Feb 5, 2026 | 16.13% (0.16135) | 94.61th | v4 (v2025.03.14) |
| Jan 19, 2026 | 17.37% (0.17374) | 94.84th | v4 (v2025.03.14) |
| Nov 2, 2025 | 16.26% (0.16262) | 94.58th | v4 (v2025.03.14) |
| Oct 4, 2025 | 27.29% (0.27294) | 96.22th | v4 (v2025.03.14) |
| Sep 11, 2025 | 16.26% (0.16262) | 94.59th | v4 (v2025.03.14) |
| Aug 4, 2025 | 14.79% (0.14793) | 94.23th | v4 (v2025.03.14) |
| Jun 6, 2025 | 25.19% (0.25192) | 95.88th | v4 (v2025.03.14) |
| Mar 17, 2025 | 14.02% (0.14016) | 93.82th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.08% (0.00078) | 35.70th | v3 (v2023.03.01) |
| Jul 11, 2024 | 0.08% (0.00078) | 34.14th | v3 (v2023.03.01) |
| May 8, 2023 | 0.08% (0.00078) | 32.14th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.09% (0.00093) | 38.10th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.55% (0.04547) | 88.83th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.55% (0.04547) | 87.72th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.55% (0.04547) | 74.10th | v2 (v2022.01.01) |
| Feb 3, 2022 | 13.34% (0.13340) | 89.09th | v1 |
| Jan 6, 2022 | 13.34% (0.13340) | 88.96th | v1 |
| Sep 1, 2021 | 13.34% (0.13340) | 96.02th | v1 |
| Apr 14, 2021 | 13.34% (0.13340) | 0.00th | v1 |
References (16)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f991af3daabaecff34684fd51fac80319d1baad1 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- http://www.debian.org/security/2017/dsa-3927 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.debian.org/security/2017/dsa-3945 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.securityfocus.com/bid/99919 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:2918 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2930 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2931 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2018:0169 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3822 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2017-11176 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1470659 Issue Tracking
- https://github.com/torvalds/linux/commit/f991af3daabaecff34684fd51fac80319d1baad1 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0 x_refsource_CONFIRMThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-11176
- https://www.cve.org/CVERecord?id=CVE-2017-11176
- https://www.exploit-db.com/exploits/45553/ exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry
Change history (0)
No recorded changes yet.