kernel: llc: skb->sk set without skb->destructor
Published Mar 1, 2017
7.8
HIGHCVSS 3.0
EPSS 0.40%
Description
The LLC subsystem in the Linux kernel before 4.9.13 does not ensure that a certain destructor exists in required circumstances, which allows local users to cause a denial of service (BUG_ON) or possibly have unspecified other impact via crafted system calls.
Affected products
No data.
- ≤ 4.9.12
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
Red Hat statement
This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6, 7 and MRG-2, as the kernel module 'llc2.ko' with this security flaw is not shipped with the products listed.
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:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:L/AC:L/Au:N/C:P/I:P/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
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 | 0.40% (0.00404) | 32.25th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.40% (0.00404) | 31.94th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.08% (0.00077) | 20.53th | 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 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.03% (0.01034) | 20.32th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.10% (0.01105) | 29.08th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.10% (0.01105) | 0.00th | v1 |
References (11)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8b74d439e1697110c5e5c600643e823eb1dd0762 x_refsource_CONFIRMPatch
- http://www.debian.org/security/2017/dsa-3804 vendor-advisoryx_refsource_DEBIAN
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.13 x_refsource_CONFIRMPatchRelease Notes
- http://www.openwall.com/lists/oss-security/2017/02/28/7 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/96510 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2017-6345 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1428485 Issue Tracking
- https://github.com/torvalds/linux/commit/8b74d439e1697110c5e5c600643e823eb1dd0762 x_refsource_CONFIRMPatch
- https://nvd.nist.gov/vuln/detail/CVE-2017-6345
- https://usn.ubuntu.com/3754-1/ vendor-advisoryx_refsource_UBUNTU
- https://www.cve.org/CVERecord?id=CVE-2017-6345
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8b74d439e1697110c5e5c600643e823eb1dd0762 | x_refsource_CONFIRMPatch | |
| http://www.debian.org/security/2017/dsa-3804 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.13 | x_refsource_CONFIRMPatchRelease Notes | |
| http://www.openwall.com/lists/oss-security/2017/02/28/7 | mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory | |
| http://www.securityfocus.com/bid/96510 | vdb-entryx_refsource_BID | |
| https://access.redhat.com/security/cve/CVE-2017-6345 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1428485 | Issue Tracking | |
| https://github.com/torvalds/linux/commit/8b74d439e1697110c5e5c600643e823eb1dd0762 | x_refsource_CONFIRMPatch | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-6345 | ||
| https://usn.ubuntu.com/3754-1/ | vendor-advisoryx_refsource_UBUNTU | |
| https://www.cve.org/CVERecord?id=CVE-2017-6345 |
Change history (0)
No recorded changes yet.