kernel: Oops in shash_async_export()
Published Nov 28, 2016
5.5
MEDIUMCVSS 3.0
EPSS 0.43%
Description
The hash_accept function in crypto/algif_hash.c in the Linux kernel before 4.3.6 allows local users to cause a denial of service (OOPS) by attempting to trigger use of in-kernel hash algorithms for a socket that has received zero bytes of data.
Affected products
No data.
- ≤ 4.3.5
No data.
Red Hat Enterprise Linux 7
kernel-0:3.10.0-514.21.1.el7
Fixed · RHSA-2017:1308
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-514.21.1.rt56.438.el7
Fixed · RHSA-2017:1298
Red Hat Enterprise MRG 2
kernel-rt-1:3.10.0-514.rt56.221.el6rt
Fixed · RHSA-2017:1297
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-514.21.1.el7 | Fixed | RHSA-2017:1308 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-514.21.1.rt56.438.el7 | Fixed | RHSA-2017:1298 |
| Red Hat Enterprise MRG 2 | kernel-rt-1:3.10.0-514.rt56.221.el6rt | Fixed | RHSA-2017:1297 |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not 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 creating this issue is not present in the products listed. This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 7 and Red Hat Enterprise 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
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.43% (0.00426) | 34.52th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.43% (0.00426) | 33.78th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.03% (0.00034) | 6.46th | 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 | 1.28% (0.01282) | 68.34th | v2 (v2022.01.01) |
| Feb 22, 2023 | 1.28% (0.01282) | 68.05th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.28% (0.01282) | 65.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.28% (0.01282) | 41.72th | v2 (v2022.01.01) |
References (12)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4afa5f9617927453ac04b24b584f6c718dfb4f45 x_refsource_CONFIRMIssue TrackingPatchVendor Advisory
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.6 x_refsource_CONFIRMRelease Notes
- http://www.openwall.com/lists/oss-security/2016/11/15/2 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/94309 vdb-entryx_refsource_BID
- https://access.redhat.com/errata/RHSA-2017:1297 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2017:1298 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2017:1308 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2016-8646 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1388821 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/4afa5f9617927453ac04b24b584f6c718dfb4f45 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2016-8646
- https://www.cve.org/CVERecord?id=CVE-2016-8646
Change history (0)
No recorded changes yet.