kernel: Incorrect overwrite check in __ip6_append_data()
Published May 27, 2017
5.5
MEDIUMCVSS 3.0
EPSS 0.40%
Description
The __ip6_append_data function in net/ipv6/ip6_output.c in the Linux kernel through 4.11.3 is too late in checking whether an overwrite of an skb data structure may occur, which allows local users to cause a denial of service (system crash) via crafted system calls.
Affected products
No data.
- ≤ 4.11.3
No data.
Red Hat Enterprise Linux 7
kernel-0:3.10.0-693.el7
Fixed · RHSA-2017:1842
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-693.rt56.617.el7
Fixed · RHSA-2017:2077
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise MRG 2
realtime-kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-693.el7 | Fixed | RHSA-2017:1842 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-693.rt56.617.el7 | Fixed | RHSA-2017:2077 |
| 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 | 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.
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
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% (0.00405) | 32.37th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.40% (0.00405) | 32.03th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.05% (0.00046) | 11.32th | 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=232cd35d0804cc241eb887bb8d4d9b3b9881c64a x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- http://www.debian.org/security/2017/dsa-3886 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/bid/98731 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:1842 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2017:2077 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2017-9242 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1456388 Issue Tracking
- https://github.com/torvalds/linux/commit/232cd35d0804cc241eb887bb8d4d9b3b9881c64a x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-9242
- https://patchwork.ozlabs.org/patch/764880/ x_refsource_CONFIRMBroken Link
- https://www.cve.org/CVERecord?id=CVE-2017-9242
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=232cd35d0804cc241eb887bb8d4d9b3b9881c64a | x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory | |
| http://www.debian.org/security/2017/dsa-3886 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.securityfocus.com/bid/98731 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/errata/RHSA-2017:1842 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/errata/RHSA-2017:2077 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/security/cve/CVE-2017-9242 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1456388 | Issue Tracking | |
| https://github.com/torvalds/linux/commit/232cd35d0804cc241eb887bb8d4d9b3b9881c64a | x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-9242 | ||
| https://patchwork.ozlabs.org/patch/764880/ | x_refsource_CONFIRMBroken Link | |
| https://www.cve.org/CVERecord?id=CVE-2017-9242 |
Change history (0)
No recorded changes yet.