kernel: Use of uninitialized value in __skb_flow_dissect()
Published Aug 28, 2017
9.8
CRITICALCVSS 3.1
EPSS 9.65%
Description
The __skb_flow_dissect function in net/core/flow_dissector.c in the Linux kernel before 4.3 does not ensure that n_proto, ip_proto, and thoff are initialized, which allows remote attackers to cause a denial of service (system crash) or possibly execute arbitrary code via a single crafted MPLS packet.
Affected products
No data.
- ≥ 4.2 · < 4.3
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-alt
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-alt | 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 versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2 as the code with the flaw is not present or is already fixed in the products listed.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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:C/I:C/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 (20 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 9.65% (0.09652) | 95.35th | v5 (v2026.06.15) |
| Jun 15, 2026 | 9.65% (0.09652) | 94.86th | v5 (v2026.06.15) |
| Nov 4, 2025 | 13.46% (0.13462) | 93.90th | v4 (v2025.03.14) |
| Mar 30, 2025 | 5.72% (0.05722) | 89.50th | v4 (v2025.03.14) |
| Mar 29, 2025 | 11.63% (0.11629) | 89.39th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.72% (0.05722) | 89.75th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.43% (0.01429) | 87.09th | v3 (v2023.03.01) |
| Aug 8, 2023 | 1.43% (0.01429) | 84.84th | v3 (v2023.03.01) |
| Jul 8, 2023 | 1.45% (0.01453) | 84.85th | v3 (v2023.03.01) |
| Jun 13, 2023 | 1.43% (0.01430) | 84.65th | v3 (v2023.03.01) |
| May 8, 2023 | 1.51% (0.01509) | 84.95th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.34% (0.01344) | 84.00th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.79% (0.03795) | 85.54th | v2 (v2022.01.01) |
| May 25, 2022 | 3.79% (0.03795) | 84.29th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.69% (0.03693) | 83.51th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.69% (0.03693) | 66.67th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.83% (0.02825) | 63.11th | v1 |
| Jan 6, 2022 | 2.83% (0.02825) | 62.77th | v1 |
| Sep 1, 2021 | 2.83% (0.02825) | 80.52th | v1 |
| Apr 14, 2021 | 2.83% (0.02825) | 0.00th | v1 |
References (8)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a6e544b0a88b53114bfa5a57e21b7be7a8dfc9d0 x_refsource_CONFIRMIssue TrackingPatchVendor Advisory
- http://seclists.org/oss-sec/2017/q3/345 x_refsource_CONFIRMMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/100517 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2017-13715 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1485246 Issue Tracking
- https://github.com/torvalds/linux/commit/a6e544b0a88b53114bfa5a57e21b7be7a8dfc9d0 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-13715
- https://www.cve.org/CVERecord?id=CVE-2017-13715
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a6e544b0a88b53114bfa5a57e21b7be7a8dfc9d0 | x_refsource_CONFIRMIssue TrackingPatchVendor Advisory | |
| http://seclists.org/oss-sec/2017/q3/345 | x_refsource_CONFIRMMailing ListThird Party Advisory | |
| http://www.securityfocus.com/bid/100517 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2017-13715 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1485246 | Issue Tracking | |
| https://github.com/torvalds/linux/commit/a6e544b0a88b53114bfa5a57e21b7be7a8dfc9d0 | x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-13715 | ||
| https://www.cve.org/CVERecord?id=CVE-2017-13715 |
Change history (0)
No recorded changes yet.