kernel: Use-after-free in the af_packet.c
Published Oct 19, 2017
7.8
HIGHCVSS 3.0
EPSS 0.96%
Description
net/packet/af_packet.c in the Linux kernel before 4.13.6 allows local users to gain privileges via crafted system calls that trigger mishandling of packet_fanout data structures, because of a race condition (involving fanout_add and packet_do_bind) that leads to a use-after-free, a different vulnerability than CVE-2017-6346.
Affected products
No data.
- ≤ 4.13.5
No data.
Red Hat Enterprise Linux 7
kernel-0:3.10.0-693.17.1.el7
Fixed · RHSA-2018:0151
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-693.17.1.rt56.636.el7
Fixed · RHSA-2018:0152
Red Hat Enterprise MRG 2
kernel-rt-1:3.10.0-693.17.1.rt56.604.el6rt
Fixed · RHSA-2018:0181
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-alt
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-693.17.1.el7 | Fixed | RHSA-2018:0151 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-693.17.1.rt56.636.el7 | Fixed | RHSA-2018:0152 |
| Red Hat Enterprise MRG 2 | kernel-rt-1:3.10.0-693.17.1.rt56.604.el6rt | Fixed | RHSA-2018:0181 |
| 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-alt | 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 and 6 as a 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 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:H/I:H/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 v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- 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 | 0.96% (0.00962) | 60.25th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.97% (0.00970) | 57.15th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.33% (0.00334) | 54.02th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 0.34th | v3 (v2023.03.01) |
| May 8, 2023 | 0.04% (0.00042) | 0.49th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00043) | 7.45th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.53% (0.03534) | 84.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.53% (0.03534) | 83.33th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.53% (0.03534) | 66.49th | v2 (v2022.01.01) |
| Feb 3, 2022 | 7.04% (0.07037) | 83.35th | v1 |
| Jan 6, 2022 | 7.04% (0.07037) | 83.19th | v1 |
| Sep 1, 2021 | 7.04% (0.07037) | 91.15th | v1 |
| Apr 14, 2021 | 7.04% (0.07037) | 0.00th | v1 |
References (18)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=008ba2a13f2d04c947adc536d19debb8fe66f110 x_refsource_MISCThird Party Advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4971613c1639d8e5f102c4e797c3bf8f83a5a69e x_refsource_MISCThird Party Advisory
- http://patchwork.ozlabs.org/patch/813945/ x_refsource_MISCIssue TrackingThird Party Advisory
- http://patchwork.ozlabs.org/patch/818726/ x_refsource_MISCThird Party Advisory
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.6 x_refsource_MISCExploitThird Party Advisory
- http://www.securityfocus.com/bid/101573 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:0151 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2018:0152 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2018:0181 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2017-15649 Vendor Advisory
- https://blogs.securiteam.com/index.php/archives/3484 x_refsource_MISCThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1504574 Issue Tracking
- https://github.com/torvalds/linux/commit/008ba2a13f2d04c947adc536d19debb8fe66f110 x_refsource_MISCPatchThird Party Advisory
- https://github.com/torvalds/linux/commit/4971613c1639d8e5f102c4e797c3bf8f83a5a69e x_refsource_MISCPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2017-15649
- https://usn.ubuntu.com/3754-1/ vendor-advisoryx_refsource_UBUNTU
- https://www.cve.org/CVERecord?id=CVE-2017-15649
Change history (0)
No recorded changes yet.