HIGH
kernel: Possible use-after-free vulnerability in keyring facility
Published Feb 8, 2016
7.8
HIGHCVSS 3.1
EPSS 3.44%
Description
The join_session_keyring function in security/keys/process_keys.c in the Linux kernel before 4.4.1 mishandles object references in a certain error case, which allows local users to gain privileges or cause a denial of service (integer overflow and use-after-free) via crafted keyctl commands.
Affected products
No data.
Configuration 1
OR
- 4.0
- 4.0.1
- 4.0.2
- 4.0.3
- 4.0.4
- 4.1
- 4.1.2
- 4.2
- 4.2.1
- 4.2.2
- 4.3
- 4.3.1
- 4.4
- 4.4.1
- 4.4.2
- 4.4.3
- 5.0
- 5.0.1
- 5.0.2
- 5.1
- 5.1.0
- 5.1.1
- 6.0
- 6.0.1
Configuration 2
- ≤ 7.5
Configuration 3
OR
- ≥ 3.8 · < 3.10.95
- ≥ 3.11 · < 3.12.53
- ≥ 3.13 · < 3.14.59
- ≥ 3.15 · < 3.16.35
- ≥ 3.17 · < 3.18.26
- ≥ 3.19 · < 4.1.16
- ≥ 4.2 · < 4.3.4
- ≥ 4.4 · < 4.4.1
Configuration 4
- 8.0
Configuration 5
OR
- 12.04
- 14.04
- 15.04
- 15.10
No data.
Red Hat Enterprise Linux 7
kernel-0:3.10.0-327.4.5.el7
Fixed · RHSA-2016:0064
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-327.4.5.rt56.206.el7_2
Fixed · RHSA-2016:0065
Red Hat Enterprise Linux 7.1 Extended Update Support
kernel-0:3.10.0-229.26.2.ael7b
Fixed · RHSA-2016:0103
Red Hat Enterprise MRG 2
kernel-rt-1:3.10.0-327.rt56.170.el6rt
Fixed · RHSA-2016:0068
Red Hat Enterprise Linux 4
kernel
Not affected
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-327.4.5.el7 | Fixed | RHSA-2016:0064 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-327.4.5.rt56.206.el7_2 | Fixed | RHSA-2016:0065 |
| Red Hat Enterprise Linux 7.1 Extended Update Support | kernel-0:3.10.0-229.26.2.ael7b | Fixed | RHSA-2016:0103 |
| Red Hat Enterprise MRG 2 | kernel-rt-1:3.10.0-327.rt56.170.el6rt | Fixed | RHSA-2016:0068 |
| Red Hat Enterprise Linux 4 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the Linux kernels as shipped with Red Hat Enterprise Linux 5 and 6. Refer to https://access.redhat.com/node/2131021 for further information.
Metrics
No CVSS v4.0 score for this CVE.
7.8 HIGH NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
No CVSS v3.0 score for this CVE.
7.2 HIGH NVD
AV:L/AC:L/Au:N/C:C/I:C/A:C
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
3.44% 0.03442
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.03442
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 (31 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.44% (0.03442) | 88.59th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.65% (0.03646) | 88.10th | v5 (v2026.06.15) |
| Jun 10, 2026 | 56.18% (0.56179) | 98.15th | v4 (v2025.03.14) |
| May 13, 2026 | 54.65% (0.54652) | 98.06th | v4 (v2025.03.14) |
| Apr 27, 2026 | 49.25% (0.49246) | 97.79th | v4 (v2025.03.14) |
| Apr 2, 2026 | 50.84% (0.50836) | 97.85th | v4 (v2025.03.14) |
| Mar 7, 2026 | 43.95% (0.43952) | 97.47th | v4 (v2025.03.14) |
| Jan 22, 2026 | 50.48% (0.50482) | 97.75th | v4 (v2025.03.14) |
| Dec 28, 2025 | 52.95% (0.52947) | 97.84th | v4 (v2025.03.14) |
| Dec 27, 2025 | 58.19% (0.58188) | 98.10th | v4 (v2025.03.14) |
| Dec 17, 2025 | 52.95% (0.52947) | 97.84th | v4 (v2025.03.14) |
| Nov 15, 2025 | 58.41% (0.58406) | 98.09th | v4 (v2025.03.14) |
| Nov 5, 2025 | 50.66% (0.50658) | 97.70th | v4 (v2025.03.14) |
| Oct 28, 2025 | 56.23% (0.56232) | 97.98th | v4 (v2025.03.14) |
| Oct 27, 2025 | 63.66% (0.63658) | 98.33th | v4 (v2025.03.14) |
| Oct 6, 2025 | 56.23% (0.56232) | 98.03th | v4 (v2025.03.14) |
| Oct 1, 2025 | 50.66% (0.50658) | 97.78th | v4 (v2025.03.14) |
| May 21, 2025 | 55.40% (0.55395) | 97.90th | v4 (v2025.03.14) |
| Mar 30, 2025 | 58.26% (0.58255) | 98.01th | v4 (v2025.03.14) |
| Mar 27, 2025 | 55.51% (0.55509) | 97.75th | v4 (v2025.03.14) |
| Mar 25, 2025 | 53.09% (0.53093) | 97.74th | v4 (v2025.03.14) |
| Mar 22, 2025 | 55.23% (0.55235) | 97.88th | v4 (v2025.03.14) |
| Mar 17, 2025 | 57.49% (0.57489) | 97.93th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 0.34th | v3 (v2023.03.01) |
| May 8, 2023 | 0.04% (0.00042) | 0.49th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00043) | 7.45th | v3 (v2023.03.01) |
| Mar 6, 2023 | 5.53% (0.05531) | 90.00th | v2 (v2022.01.01) |
| Feb 13, 2023 | 5.53% (0.05531) | 89.67th | v2 (v2022.01.01) |
| Feb 3, 2023 | 6.56% (0.06561) | 91.09th | v2 (v2022.01.01) |
| Apr 1, 2022 | 5.53% (0.05531) | 89.03th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.53% (0.05531) | 76.66th | v2 (v2022.01.01) |
Weaknesses (1)
References (46)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=23567fd052a9abb6d67fe8e7a9ccdd9800a540f2 x_refsource_CONFIRMVendor Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.html vendor-advisoryx_refsource_FEDORAMailing ListThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176194.html vendor-advisoryx_refsource_FEDORAMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00026.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00012.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00033.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00034.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00035.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00038.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00039.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00040.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00041.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00043.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00044.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00045.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://perception-point.io/2016/01/14/analysis-and-exploitation-of-a-linux-kernel-vulnerability-cve-2016-0728/ x_refsource_MISCThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-0064.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-0065.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-0068.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://source.android.com/security/bulletin/2016-03-01.html x_refsource_CONFIRMVendor Advisory
- http://www.debian.org/security/2016/dsa-3448 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.1 x_refsource_CONFIRMVendor Advisory
- http://www.openwall.com/lists/oss-security/2016/01/19/2 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html x_refsource_CONFIRMThird Party Advisory
- http://www.securityfocus.com/bid/81054 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1034701 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/USN-2870-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- http://www.ubuntu.com/usn/USN-2870-2 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- http://www.ubuntu.com/usn/USN-2871-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- http://www.ubuntu.com/usn/USN-2871-2 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- http://www.ubuntu.com/usn/USN-2872-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- http://www.ubuntu.com/usn/USN-2872-2 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- http://www.ubuntu.com/usn/USN-2872-3 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- http://www.ubuntu.com/usn/USN-2873-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/node/2131021
- https://access.redhat.com/security/cve/CVE-2016-0728 Vendor Advisory
- https://bto.bluecoat.com/security-advisory/sa112 x_refsource_CONFIRMThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1297475 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://github.com/torvalds/linux/commit/23567fd052a9abb6d67fe8e7a9ccdd9800a540f2 x_refsource_CONFIRMThird Party Advisory
- https://h20565.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05018265 vendor-advisoryx_refsource_HPThird Party Advisory
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05130958 x_refsource_CONFIRMThird Party Advisory
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05158380 x_refsource_CONFIRMThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2016-0728
- https://security.netapp.com/advisory/ntap-20160211-0001/ x_refsource_CONFIRMThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2016-0728
- https://www.exploit-db.com/exploits/39277/ exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Feb 8, 2016
Updated Aug 5, 2024
Reserved Dec 16, 2015
Link CVE-2016-0728
CISA Vulnrichment
Updated n/a