kernel: when NFSv4 migration is executed, kernel oops occurs at NFS client
Published May 2, 2016
7.5
HIGHCVSS 3.0
EPSS 3.10%
Description
fs/nfs/nfs4proc.c in the NFS client in the Linux kernel before 4.2.2 does not properly initialize memory for migration recovery operations, which allows remote NFS servers to cause a denial of service (NULL pointer dereference and panic) via crafted network traffic.
Affected products
No data.
- ≤ 4.2.1
No data.
Red Hat Enterprise Linux 7
kernel-0:3.10.0-514.el7
Fixed · RHSA-2016:2574
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-514.rt56.420.el7
Fixed · RHSA-2016:2584
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise MRG 2
realtime-kernel
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-514.el7 | Fixed | RHSA-2016:2574 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-514.rt56.420.el7 | Fixed | RHSA-2016:2584 |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not 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 Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 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 the issue.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/Au:N/C:N/I:N/A:P
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
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.10% (0.03103) | 87.31th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.04% (0.03044) | 85.77th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.88% (0.01879) | 81.52th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.98% (0.03981) | 80.38th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.88% (0.01879) | 81.93th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.43% (0.01429) | 87.09th | v3 (v2023.03.01) |
| May 22, 2024 | 1.43% (0.01429) | 86.56th | v3 (v2023.03.01) |
| Apr 5, 2023 | 1.43% (0.01429) | 84.53th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.34% (0.01343) | 84.00th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.18% (0.01183) | 61.76th | v2 (v2022.01.01) |
| Oct 19, 2022 | 1.18% (0.01183) | 60.79th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.18% (0.01183) | 58.77th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.18% (0.01183) | 35.15th | v2 (v2022.01.01) |
References (11)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=18e3b739fdc826481c6a1335ce0c5b19b3d415da x_refsource_CONFIRM
- http://rhn.redhat.com/errata/RHSA-2016-2574.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2016-2584.html vendor-advisoryx_refsource_REDHAT
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.2.2 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2016/01/05/9 mailing-listx_refsource_MLIST
- http://www.securitytracker.com/id/1034594 vdb-entryx_refsource_SECTRACK
- https://access.redhat.com/security/cve/CVE-2015-8746 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1295802 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/18e3b739fdc826481c6a1335ce0c5b19b3d415da x_refsource_CONFIRMVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2015-8746
- https://www.cve.org/CVERecord?id=CVE-2015-8746
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=18e3b739fdc826481c6a1335ce0c5b19b3d415da | x_refsource_CONFIRM | |
| http://rhn.redhat.com/errata/RHSA-2016-2574.html | vendor-advisoryx_refsource_REDHAT | |
| http://rhn.redhat.com/errata/RHSA-2016-2584.html | vendor-advisoryx_refsource_REDHAT | |
| http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.2.2 | x_refsource_CONFIRM | |
| http://www.openwall.com/lists/oss-security/2016/01/05/9 | mailing-listx_refsource_MLIST | |
| http://www.securitytracker.com/id/1034594 | vdb-entryx_refsource_SECTRACK | |
| https://access.redhat.com/security/cve/CVE-2015-8746 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1295802 | x_refsource_CONFIRMIssue Tracking | |
| https://github.com/torvalds/linux/commit/18e3b739fdc826481c6a1335ce0c5b19b3d415da | x_refsource_CONFIRMVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2015-8746 | ||
| https://www.cve.org/CVERecord?id=CVE-2015-8746 |
Change history (0)
No recorded changes yet.