kernel: Reference counter leak in ipxitf_ioctl resulting into use after free
Published May 14, 2017
7.8
HIGHCVSS 3.1
EPSS 0.38%
Description
The ipxitf_ioctl function in net/ipx/af_ipx.c in the Linux kernel through 4.11.1 mishandles reference counts, which allows local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via a failed SIOCGIFADDR ioctl call for an IPX interface.
Affected products
- Vendor n/a Product Linux kernel through 4.11.1 Defaultn/a
- Version Linux kernel through 4.11.1StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Linux kernel through 4.11.1 | n/a |
|
Configuration 1
- < 3.2.89
- ≥ 3.3 · < 3.16.44
- ≥ 3.17 · < 3.18.55
- ≥ 3.19 · < 4.1.41
- ≥ 4.2 · < 4.4.70
- ≥ 4.5 · < 4.9.30
- ≥ 4.10 · < 4.11.3
Configuration 2
- 8.0
- 9.0
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 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 shipped with the products listed.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:H
AV:L/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 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 | 0.38% (0.00380) | 29.56th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.40% (0.00395) | 31.05th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.08% (0.00079) | 21.07th | 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 | 1.10% (0.01104) | 54.09th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.10% (0.01104) | 28.85th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.24% (0.01242) | 30.15th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.24% (0.01242) | 0.00th | v1 |
References (11)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ee0d8d8482345ff97a75a7d747efc309f13b0d80 x_refsource_CONFIRMPatch
- http://www.debian.org/security/2017/dsa-3886 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.securityfocus.com/bid/98439 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039237 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2017-7487 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1447734 x_refsource_CONFIRMIssue TrackingPatch
- https://github.com/torvalds/linux/commit/ee0d8d8482345ff97a75a7d747efc309f13b0d80 x_refsource_CONFIRMIssue TrackingPatchVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-7487
- https://patchwork.ozlabs.org/patch/757549/ x_refsource_CONFIRMPatch
- https://source.android.com/security/bulletin/2017-09-01 x_refsource_CONFIRMThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2017-7487
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ee0d8d8482345ff97a75a7d747efc309f13b0d80 | x_refsource_CONFIRMPatch | |
| http://www.debian.org/security/2017/dsa-3886 | vendor-advisoryx_refsource_DEBIANThird Party Advisory | |
| http://www.securityfocus.com/bid/98439 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1039237 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2017-7487 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1447734 | x_refsource_CONFIRMIssue TrackingPatch | |
| https://github.com/torvalds/linux/commit/ee0d8d8482345ff97a75a7d747efc309f13b0d80 | x_refsource_CONFIRMIssue TrackingPatchVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-7487 | ||
| https://patchwork.ozlabs.org/patch/757549/ | x_refsource_CONFIRMPatch | |
| https://source.android.com/security/bulletin/2017-09-01 | x_refsource_CONFIRMThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2017-7487 |
Change history (0)
No recorded changes yet.