kernel: keyctl_set_reqkey_keyring() leaks thread keyrings
Published May 11, 2017
5.5
MEDIUMCVSS 3.0
EPSS 2.26%
Description
The KEYS subsystem in the Linux kernel before 4.10.13 allows local users to cause a denial of service (memory consumption) via a series of KEY_REQKEY_DEFL_THREAD_KEYRING keyctl_set_reqkey_keyring calls.
Affected products
- Vendor n/a Product Linux kernel before 4.10.13 Defaultn/a
- Version Linux kernel before 4.10.13StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Linux kernel before 4.10.13 | n/a |
|
- ≤ 4.10.12
No data.
Red Hat Enterprise Linux 7
kernel-0:3.10.0-693.17.1.el7
Fixed · RHSA-2018:0151
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-693.17.1.rt56.636.el7
Fixed · RHSA-2018:0152
Red Hat Enterprise MRG 2
kernel-rt-1:3.10.0-693.17.1.rt56.604.el6rt
Fixed · RHSA-2018:0181
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-0:3.10.0-693.17.1.el7 | Fixed | RHSA-2018:0151 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-693.17.1.rt56.636.el7 | Fixed | RHSA-2018:0152 |
| Red Hat Enterprise MRG 2 | kernel-rt-1:3.10.0-693.17.1.rt56.604.el6rt | Fixed | RHSA-2018:0181 |
| 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 as the code with the flaw is not present in this product. 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 might 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 v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (19 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.26% (0.02263) | 82.38th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.28% (0.02282) | 80.82th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.76% (0.00755) | 70.93th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.55% (0.03547) | 79.24th | v4 (v2025.03.14) |
| Mar 28, 2025 | 0.76% (0.00755) | 70.93th | v4 (v2025.03.14) |
| Mar 27, 2025 | 3.55% (0.03547) | 86.13th | v4 (v2025.03.14) |
| Mar 20, 2025 | 1.06% (0.01065) | 75.77th | v4 (v2025.03.14) |
| Mar 19, 2025 | 3.55% (0.03547) | 86.29th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.06% (0.01065) | 76.15th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 0.34th | v3 (v2023.03.01) |
| May 8, 2023 | 0.04% (0.00042) | 0.49th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00043) | 7.45th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.82% (0.03821) | 85.56th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.82% (0.03821) | 84.08th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.82% (0.03821) | 67.27th | v2 (v2022.01.01) |
| Feb 3, 2022 | 9.15% (0.09151) | 86.57th | v1 |
| Jan 6, 2022 | 9.15% (0.09151) | 86.41th | v1 |
| Sep 1, 2021 | 9.15% (0.09151) | 93.82th | v1 |
| Apr 14, 2021 | 9.15% (0.09151) | 0.00th | v1 |
References (18)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c9f838d104fed6f2f61d68164712e3204bf5271b x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html vendor-advisoryx_refsource_SUSE
- http://openwall.com/lists/oss-security/2017/05/11/1 x_refsource_CONFIRMMailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/98422 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1038471 vdb-entryx_refsource_SECTRACK
- https://access.redhat.com/errata/RHSA-2018:0151 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2018:0152 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2018:0181 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2017-7472 Vendor Advisory
- https://bugzilla.novell.com/show_bug.cgi?id=1034862 x_refsource_CONFIRMIssue TrackingPatch
- https://bugzilla.redhat.com/show_bug.cgi?id=1442086 x_refsource_CONFIRMIssue TrackingPatch
- https://github.com/torvalds/linux/commit/c9f838d104fed6f2f61d68164712e3204bf5271b x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://lkml.org/lkml/2017/4/1/235 x_refsource_CONFIRMBroken Link
- https://lkml.org/lkml/2017/4/3/724 x_refsource_CONFIRMBroken Link
- https://nvd.nist.gov/vuln/detail/CVE-2017-7472
- https://www.cve.org/CVERecord?id=CVE-2017-7472
- https://www.exploit-db.com/exploits/42136/ exploitx_refsource_EXPLOIT-DB
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.13 x_refsource_CONFIRMRelease NotesVendor Advisory
Change history (0)
No recorded changes yet.