kernel: Information leak in x25 module
Published May 23, 2016
7.5
HIGHCVSS 3.0
EPSS 4.06%
Description
The x25_negotiate_facilities function in net/x25/x25_facilities.c in the Linux kernel before 4.5.5 does not properly initialize a certain data structure, which allows attackers to obtain sensitive information from kernel stack memory via an X.25 Call Request.
Affected products
No data.
Configuration 1
- ≤ 4.5.4
Configuration 2
- 12.04
- 14.04
- 15.10
- 16.04
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 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.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
AV:N/AC:L/Au:N/C:P/I:N/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 | 4.06% (0.04065) | 90.35th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.18% (0.04178) | 89.58th | v5 (v2026.06.15) |
| Jan 6, 2026 | 1.55% (0.01550) | 80.97th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.49% (0.00489) | 63.44th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.92% (0.00916) | 83.55th | v3 (v2023.03.01) |
| May 3, 2024 | 0.92% (0.00916) | 82.75th | v3 (v2023.03.01) |
| Jul 16, 2023 | 0.92% (0.00916) | 80.74th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.81% (0.00811) | 79.13th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02686) | 82.85th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.69% (0.02686) | 81.17th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.69% (0.02686) | 62.66th | v2 (v2022.01.01) |
References (26)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=79e48650320e6fba48369fccf13fd045315b19b8 x_refsource_CONFIRMVendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00052.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00007.html vendor-advisoryx_refsource_SUSE
- http://www.debian.org/security/2016/dsa-3607 vendor-advisoryx_refsource_DEBIAN
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.5 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2016/05/10/12 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/90528 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/USN-3016-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-3016-2 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-3016-3 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-3016-4 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-3017-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-3017-2 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-3017-3 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-3018-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-3018-2 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-3019-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-3020-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-3021-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-3021-2 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2016-4580 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1338756 Issue Tracking
- https://github.com/torvalds/linux/commit/79e48650320e6fba48369fccf13fd045315b19b8 x_refsource_CONFIRMVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2016-4580
- https://www.cve.org/CVERecord?id=CVE-2016-4580
Change history (0)
No recorded changes yet.