kernel: NULL pointer dereference in keyring_search_aux function
Published Mar 16, 2017
5.5
MEDIUMCVSS 3.0
EPSS 0.39%
Description
The keyring_search_aux function in security/keys/keyring.c in the Linux kernel through 3.14.79 allows local users to cause a denial of service (NULL pointer dereference and OOPS) via a request_key system call for the "dead" type.
Affected products
No data.
- ≤ 3.14.79
No data.
Red Hat Enterprise Linux 7
kernel-0:3.10.0-693.el7
Fixed · RHSA-2017:1842
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-693.rt56.617.el7
Fixed · RHSA-2017:2077
Red Hat Enterprise MRG 2
kernel-rt-1:3.10.0-693.2.1.rt56.585.el6rt
Fixed · RHSA-2017:2669
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-693.el7 | Fixed | RHSA-2017:1842 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-693.rt56.617.el7 | Fixed | RHSA-2017:2077 |
| Red Hat Enterprise MRG 2 | kernel-rt-1:3.10.0-693.2.1.rt56.585.el6rt | Fixed | RHSA-2017:2669 |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5. This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 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.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
AV:L/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
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.39% (0.00385) | 30.10th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.39% (0.00385) | 30.05th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.10% (0.00099) | 25.11th | 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 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.03% (0.01034) | 20.32th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.10% (0.01105) | 29.08th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.10% (0.01105) | 0.00th | v1 |
References (11)
- http://www.securityfocus.com/bid/96943 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.spinics.net/lists/keyrings/msg01845.html x_refsource_MISCMailing ListThird Party Advisory
- http://www.spinics.net/lists/keyrings/msg01846.html x_refsource_MISCMailing ListThird Party Advisory
- http://www.spinics.net/lists/keyrings/msg01849.html x_refsource_MISCMailing ListThird Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1842 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2017:2077 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2017:2669 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2017-6951 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1433252 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2017-6951
- https://www.cve.org/CVERecord?id=CVE-2017-6951
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/96943 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.spinics.net/lists/keyrings/msg01845.html | x_refsource_MISCMailing ListThird Party Advisory | |
| http://www.spinics.net/lists/keyrings/msg01846.html | x_refsource_MISCMailing ListThird Party Advisory | |
| http://www.spinics.net/lists/keyrings/msg01849.html | x_refsource_MISCMailing ListThird Party Advisory | |
| https://access.redhat.com/errata/RHSA-2017:1842 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/errata/RHSA-2017:2077 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/errata/RHSA-2017:2669 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/security/cve/CVE-2017-6951 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1433252 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-6951 | ||
| https://www.cve.org/CVERecord?id=CVE-2017-6951 |
Change history (0)
No recorded changes yet.