kernel: tty: Prevent ldisc drivers from re-using stale tty fields
Published Nov 16, 2016
5.5
MEDIUMCVSS 3.0
EPSS 1.49%
Description
The tty_set_termios_ldisc function in drivers/tty/tty_ldisc.c in the Linux kernel before 4.5 allows local users to obtain sensitive information from kernel memory by reading a tty data structure.
Affected products
No data.
- ≤ 4.4.32
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:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
AV:N/AC:M/Au:N/C:C/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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.49% (0.01490) | 73.16th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.50% (0.01497) | 70.76th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.17% (0.00173) | 36.23th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.07% (0.00073) | 33.83th | v3 (v2023.03.01) |
| Jun 21, 2024 | 0.07% (0.00073) | 31.91th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.07% (0.00073) | 29.89th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
References (8)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dd42bf1197144ede075a9d4793123f7689e164bc x_refsource_CONFIRMPatchVendor Advisory
- http://source.android.com/security/bulletin/2016-11-01.html x_refsource_CONFIRMThird Party Advisory
- http://www.securityfocus.com/bid/94138 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2015-8964 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1404655 Issue Tracking
- https://github.com/torvalds/linux/commit/dd42bf1197144ede075a9d4793123f7689e164bc x_refsource_CONFIRMPatchVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2015-8964
- https://www.cve.org/CVERecord?id=CVE-2015-8964
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dd42bf1197144ede075a9d4793123f7689e164bc | x_refsource_CONFIRMPatchVendor Advisory | |
| http://source.android.com/security/bulletin/2016-11-01.html | x_refsource_CONFIRMThird Party Advisory | |
| http://www.securityfocus.com/bid/94138 | vdb-entryx_refsource_BID | |
| https://access.redhat.com/security/cve/CVE-2015-8964 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1404655 | Issue Tracking | |
| https://github.com/torvalds/linux/commit/dd42bf1197144ede075a9d4793123f7689e164bc | x_refsource_CONFIRMPatchVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2015-8964 | ||
| https://www.cve.org/CVERecord?id=CVE-2015-8964 |
Change history (0)
No recorded changes yet.