MEDIUM
kernel: Unix sockets use after free - peer_wait_queue prematurely freed
Published Dec 28, 2015
5.3
MEDIUMCVSS 3.0
EPSS 0.63%
Description
Use-after-free vulnerability in net/unix/af_unix.c in the Linux kernel before 4.3.3 allows local users to bypass intended AF_UNIX socket permissions or cause a denial of service (panic) via crafted epoll_ctl calls.
Affected products
No data.
- ≤ 4.3.2
No data.
Red Hat Enterprise Linux 4
kernel
Not affected
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
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | kernel | Not affected | n/a |
| 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 | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect Linux kernels as shipped with Red Hat Enterprise linux 5,7, MRG-2 and realtime kernels. This issue affects the Linux kernels as shipped with Red Hat Enterprise Linux 6 and may be addressed in a future update. This has been rated as having Moderate 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.
5.3 MEDIUM NVD
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H
Attack Vector Local
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact Low
Availability Impact High
5.4 MEDIUM NVD
AV:L/AC:M/Au:N/C:N/I:P/A:C
Access Vector Local
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
0.63% 0.00625
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.00625
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 | 0.63% (0.00625) | 48.03th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.63% (0.00630) | 45.23th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.01% (0.00015) | 1.58th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.05% (0.00046) | 19.07th | v3 (v2023.03.01) |
| May 8, 2024 | 0.05% (0.00046) | 16.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.05% (0.00046) | 14.05th | 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) |
Weaknesses (1)
References (56)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7d267278a9ece963d77eefec61630223fce08c6c x_refsource_CONFIRM
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00033.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00034.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00035.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00037.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00038.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00039.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00040.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00041.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00042.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00043.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00044.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00045.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00003.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00008.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00009.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00014.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00015.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00016.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00017.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00018.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00019.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00020.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00021.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00022.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00023.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00026.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html vendor-advisoryx_refsource_SUSE
- http://www.debian.org/security/2015/dsa-3426 vendor-advisoryx_refsource_DEBIAN
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3 x_refsource_CONFIRMVendor Advisory
- http://www.openwall.com/lists/oss-security/2015/11/18/16 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/77638 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1034557 vdb-entryx_refsource_SECTRACK
- http://www.spinics.net/lists/netdev/msg318826.html mailing-listx_refsource_MLISTExploit
- http://www.ubuntu.com/usn/USN-2886-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2887-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2887-2 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2888-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2889-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2889-2 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2890-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2890-2 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2890-3 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2013-7446 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1282688 x_refsource_CONFIRMIssue Tracking
- https://forums.grsecurity.net/viewtopic.php?f=3&t=4150 x_refsource_MISC
- https://github.com/torvalds/linux/commit/7d267278a9ece963d77eefec61630223fce08c6c x_refsource_CONFIRMVendor Advisory
- https://groups.google.com/forum/#%21topic/syzkaller/3twDUI4Cpm8 x_refsource_CONFIRM
- https://lkml.org/lkml/2013/10/14/424 mailing-listx_refsource_MLISTExploit
- https://lkml.org/lkml/2014/5/15/532 mailing-listx_refsource_MLISTExploit
- https://lkml.org/lkml/2015/9/13/195 mailing-listx_refsource_MLISTExploit
- https://nvd.nist.gov/vuln/detail/CVE-2013-7446
- https://www.cve.org/CVERecord?id=CVE-2013-7446
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Dec 28, 2015
Updated Aug 6, 2024
Reserved Nov 18, 2015
Link CVE-2013-7446
CISA Vulnrichment
Updated n/a