kernel: net: slip: crash when using PPP character device driver
Published Oct 19, 2015
4.9
MEDIUMCVSS 2.0
EPSS 0.65%
Description
The slhc_init function in drivers/net/slip/slhc.c in the Linux kernel through 4.2.3 does not ensure that certain slot numbers are valid, which allows local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted PPPIOCSMAXCID ioctl call.
Affected products
No data.
- ≤ 4.2.2
No data.
Red Hat Enterprise Linux 5
kernel
Will not fix
Red Hat Enterprise Linux 6
kernel
Will not fix
Red Hat Enterprise Linux 7
kernel
Will not fix
Red Hat Enterprise Linux 7
kernel-rt
Will not fix
Red Hat Enterprise MRG 2
realtime-kernel
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | kernel | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | kernel | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Will not fix | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6, 7 and MRG-2. This has been rated as having Low security impact as privileged access is required to exploit it, and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
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
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.65% (0.00646) | 49.06th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.65% (0.00651) | 46.16th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.10% (0.00103) | 25.83th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00044) | 11.89th | v3 (v2023.03.01) |
| Jul 2, 2024 | 0.04% (0.00044) | 10.25th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00044) | 8.24th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.55% (0.01547) | 74.98th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.55% (0.01547) | 74.94th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.55% (0.01547) | 72.92th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.55% (0.01547) | 51.82th | v2 (v2022.01.01) |
References (25)
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00005.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00018.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00026.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00031.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2015-12/msg00039.html vendor-advisoryx_refsource_SUSE
- http://www.debian.org/security/2015/dsa-3426 vendor-advisoryx_refsource_DEBIAN
- http://www.openwall.com/lists/oss-security/2015/10/10/3 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/77033 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1033809 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-2841-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2841-2 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2842-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2842-2 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2843-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2843-2 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2843-3 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2844-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2886-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2015-7799 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1271134 x_refsource_CONFIRMIssue Tracking
- https://code.google.com/p/android/issues/detail?id=187973 x_refsource_MISCExploit
- https://nvd.nist.gov/vuln/detail/CVE-2015-7799
- https://www.cve.org/CVERecord?id=CVE-2015-7799
Change history (0)
No recorded changes yet.