Kernel: tty: driver reference leakage in tty_open
Published May 2, 2016
5.5
MEDIUMCVSS 3.0
EPSS 0.37%
Description
The tty_open function in drivers/tty/tty_io.c in the Linux kernel before 3.1.1 mishandles a driver-lookup failure, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via crafted access to a device file under the /dev/pts directory.
Affected products
No data.
- ≤ 3.1
No data.
Red Hat Enterprise Linux 6
kernel-0:2.6.32-504.30.3.el6
Fixed · RHSA-2015:1221
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise MRG 2
realtime-kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-504.30.3.el6 | Fixed | RHSA-2015:1221 |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | 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 the versions of the kernel package as shipped with Red Hat Enterprise Linux 5, 7 and Red Hat Enterprise MRG 2. This issue affects the version of Linux kernel as shipped with Red Hat Enterprise Linux 6. Future kernel updates for Red Hat Enterprise Linux 6 may address this issue.
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:L/UI:N/S:U/C:N/I:N/A:H
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 2, 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 2, 2026 | 0.37% (0.00370) | 28.57th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.37% (0.00370) | 28.55th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.08% (0.00084) | 22.22th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.03% (0.01034) | 41.16th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.10% (0.01104) | 53.31th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.03% (0.01034) | 39.91th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.03% (0.01034) | 37.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.03% (0.01034) | 20.32th | v2 (v2022.01.01) |
No CWE recorded.
References (9)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c290f8358acaeffd8e0c551ddcc24d1206143376 x_refsource_CONFIRMVendor Advisory
- http://rhn.redhat.com/errata/RHSA-2015-1221.html vendor-advisoryx_refsource_REDHAT
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1.1 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2015/03/13/17 mailing-listx_refsource_MLIST
- https://access.redhat.com/security/cve/CVE-2011-5321 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1201887 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/c290f8358acaeffd8e0c551ddcc24d1206143376 x_refsource_CONFIRMVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2011-5321
- https://www.cve.org/CVERecord?id=CVE-2011-5321
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c290f8358acaeffd8e0c551ddcc24d1206143376 | x_refsource_CONFIRMVendor Advisory | |
| http://rhn.redhat.com/errata/RHSA-2015-1221.html | vendor-advisoryx_refsource_REDHAT | |
| http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1.1 | x_refsource_CONFIRM | |
| http://www.openwall.com/lists/oss-security/2015/03/13/17 | mailing-listx_refsource_MLIST | |
| https://access.redhat.com/security/cve/CVE-2011-5321 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1201887 | x_refsource_CONFIRMIssue Tracking | |
| https://github.com/torvalds/linux/commit/c290f8358acaeffd8e0c551ddcc24d1206143376 | x_refsource_CONFIRMVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-5321 | ||
| https://www.cve.org/CVERecord?id=CVE-2011-5321 |
Change history (0)
No recorded changes yet.