kernel: Module reference leak due to improper shut down of callback channel on umount
Published May 18, 2017
5.5
MEDIUMCVSS 3.0
EPSS 0.37%
Description
The NFSv4 implementation in the Linux kernel through 4.11.1 allows local users to cause a denial of service (resource consumption) by leveraging improper channel callback shutdown when unmounting an NFSv4 filesystem, aka a "module reference and kernel daemon" leak.
Affected products
No data.
- ≤ 4.11.1
No data.
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise MRG 2
realtime-kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| 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 |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
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
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (8 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.37% (0.00368) | 28.33th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.37% (0.00368) | 30.67th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.04% (0.00042) | 5.06th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00950) | 32.28th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00950) | 13.46th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.83% (0.00829) | 22.25th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.83% (0.00829) | 0.00th | v1 |
References (8)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c70422f760c120480fee4de6c38804c72aa26bc1 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- http://www.securityfocus.com/bid/98551 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2017-9059 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1451386 x_refsource_CONFIRMIssue TrackingPatch
- https://github.com/torvalds/linux/commit/c70422f760c120480fee4de6c38804c72aa26bc1 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-9059
- https://www.cve.org/CVERecord?id=CVE-2017-9059
- https://www.spinics.net/lists/linux-nfs/msg63334.html x_refsource_CONFIRMMailing ListPatchThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c70422f760c120480fee4de6c38804c72aa26bc1 | x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory | |
| http://www.securityfocus.com/bid/98551 | vdb-entryx_refsource_BID | |
| https://access.redhat.com/security/cve/CVE-2017-9059 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1451386 | x_refsource_CONFIRMIssue TrackingPatch | |
| https://github.com/torvalds/linux/commit/c70422f760c120480fee4de6c38804c72aa26bc1 | x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-9059 | ||
| https://www.cve.org/CVERecord?id=CVE-2017-9059 | ||
| https://www.spinics.net/lists/linux-nfs/msg63334.html | x_refsource_CONFIRMMailing ListPatchThird Party Advisory |
Change history (0)
No recorded changes yet.