kernel: Incorrect updates of uninstantiated keys crash the kernel
Published Oct 14, 2017
5.5
MEDIUMCVSS 3.0
EPSS 0.53%
Description
The KEYS subsystem in the Linux kernel through 4.13.7 mishandles use of add_key for a key that already exists but is uninstantiated, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted system call.
Affected products
No data.
- ≤ 4.13.6
No data.
Red Hat Enterprise Linux 7
kernel-alt-0:4.14.0-49.el7a
Fixed · RHSA-2018:0654
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Affected
Red Hat Enterprise Linux 7
kernel-rt
Affected
Red Hat Enterprise MRG 2
realtime-kernel
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | kernel-alt-0:4.14.0-49.el7a | Fixed | RHSA-2018:0654 |
| 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 | Affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Affected | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5 and 6, as the code with the flaw is not present in the products listed. This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 7 and MRG-2. Future 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 | 0.53% (0.00531) | 42.78th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.53% (0.00531) | 40.42th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.01% (0.00011) | 0.75th | 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 | 1.10% (0.01104) | 54.09th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.10% (0.01104) | 28.85th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.24% (0.01242) | 30.15th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.24% (0.01242) | 0.00th | v1 |
References (11)
- https://access.redhat.com/errata/RHSA-2018:0654 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2017-15299 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1498016 x_refsource_MISCIssue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html mailing-listx_refsource_MLIST
- https://marc.info/?t=150654188100001&r=1&w=2 x_refsource_MISCIssue TrackingPatchThird Party Advisory
- https://marc.info/?t=150783958600011&r=1&w=2 x_refsource_MISCIssue TrackingPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-15299
- https://usn.ubuntu.com/3798-1/ vendor-advisoryx_refsource_UBUNTU
- https://usn.ubuntu.com/3798-2/ vendor-advisoryx_refsource_UBUNTU
- https://www.cve.org/CVERecord?id=CVE-2017-15299
- https://www.mail-archive.com/linux-kernel%40vger.kernel.org/msg1499828.html x_refsource_MISC
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2018:0654 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/security/cve/CVE-2017-15299 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1498016 | x_refsource_MISCIssue TrackingThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html | mailing-listx_refsource_MLIST | |
| https://marc.info/?t=150654188100001&r=1&w=2 | x_refsource_MISCIssue TrackingPatchThird Party Advisory | |
| https://marc.info/?t=150783958600011&r=1&w=2 | x_refsource_MISCIssue TrackingPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-15299 | ||
| https://usn.ubuntu.com/3798-1/ | vendor-advisoryx_refsource_UBUNTU | |
| https://usn.ubuntu.com/3798-2/ | vendor-advisoryx_refsource_UBUNTU | |
| https://www.cve.org/CVERecord?id=CVE-2017-15299 | ||
| https://www.mail-archive.com/linux-kernel%40vger.kernel.org/msg1499828.html | x_refsource_MISC |
Change history (0)
No recorded changes yet.