busybox: unprivileged arbitrary module load via basename abuse
Published Mar 12, 2017
5.5
MEDIUMCVSS 3.0
EPSS 0.64%
Description
The add_probe function in modutils/modprobe.c in BusyBox before 1.23.0 allows local users to bypass intended restrictions on loading kernel modules via a / (slash) character in a module name, as demonstrated by an "ifconfig /usbserial up" command or a "mount -t /snd_pcm none /" command.
Affected products
No data.
No data.
Red Hat Enterprise Linux 4
busybox
Will not fix
Red Hat Enterprise Linux 5
busybox
Will not fix
Red Hat Enterprise Linux 6
busybox
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | busybox | Will not fix | n/a |
| Red Hat Enterprise Linux 5 | busybox | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | busybox | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue affects the versions of busyboxas shipped with Red Hat Enterprise Linux 4, 5 and 6. Red Hat Product Security has rated this issue as having a low security impact. A future update may address this issue. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
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:H/A:N
AV:L/AC:L/Au:N/C:N/I:P/A:N
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
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.64% (0.00635) | 48.54th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.64% (0.00635) | 45.48th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.45% (0.00450) | 60.73th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.88% (0.02880) | 77.16th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.45% (0.00450) | 61.55th | 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 | 1.28% (0.01282) | 68.34th | v2 (v2022.01.01) |
| Feb 22, 2023 | 1.28% (0.01282) | 68.05th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.28% (0.01282) | 65.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.28% (0.01282) | 41.72th | v2 (v2022.01.01) |
References (13)
- http://git.busybox.net/busybox/commit/?id=4e314faa0aecb66717418e9a47a4451aec59262b x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- http://openwall.com/lists/oss-security/2015/01/24/4 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://seclists.org/fulldisclosure/2020/Mar/15 mailing-listx_refsource_FULLDISC
- http://www.securityfocus.com/bid/72324 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2014-9645 Vendor Advisory
- https://bugs.busybox.net/show_bug.cgi?id=7652 x_refsource_CONFIRMIssue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=1185707 x_refsource_CONFIRMIssue Tracking
- https://lists.debian.org/debian-lts-announce/2018/07/msg00037.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2014-9645
- https://plus.google.com/+MathiasKrause/posts/PqFCo4bfrWu x_refsource_MISCPatchThird Party Advisory
- https://security.gentoo.org/glsa/201503-13 vendor-advisoryx_refsource_GENTOO
- https://usn.ubuntu.com/3935-1/ vendor-advisoryx_refsource_UBUNTU
- https://www.cve.org/CVERecord?id=CVE-2014-9645
Change history (0)
No recorded changes yet.