CVE-2014-0196 kev in the critical feed json
The n_tty_write function in drivers/tty/n_tty.c in the Linux kernel through 3.14.3 does not properly manage tty driver access in the "LECHO…
published 12y ago modified 4mo ago also EUVD-2014-0247
- cvss
- 5.5
- version 3.1, CNA
- cisa kev
- Exploited
- added 2023-05-12
- epss
- 20.3%
- EPSS 20.3% chance of exploitation in 30 days, percentile 97%
- public exploits
- 1
- Exploit-DB
Summary
The n_tty_write function in drivers/tty/n_tty.c in the Linux kernel through 3.14.3 does not properly manage tty driver access in the "LECHO & !OPOST" case, which allows local users to cause a denial of service (memory corruption and system crash) or gain privileges by triggering a race condition involving read and write operations with long strings.
Patch / fix
cisa required action The impacted product is end-of-life and should be disconnected if still in use.
- linux linux_kernel 3.2.59, 3.4.91, 3.10.40, 3.12.20, 3.14.4
- linux Debian 14, Debian 13, Debian 12 3.14.4-1
debian advisories DEBIAN-CVE-2014-0196
- linux Ubuntu 14.04 LTS 3.13.0-24.47
ubuntu advisories UBUNTU-CVE-2014-0196
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- kernel RHEL 6 2.6.32-358.6.1.el6
- perf RHEL 6 2.6.32-358.6.1.el6
- python-perf RHEL 6 2.6.32-358.6.1.el6
- kernel-kdump RHEL 6 2.6.32-358.6.1.el6
- kernel-firmware RHEL 6 2.6.32-358.6.1.el6
- kernel-bootwrapper RHEL 6 2.6.32-358.6.1.el6
- kernel-debuginfo-common-i686 RHEL 6 2.6.32-358.6.1.el6
- kernel-debuginfo-common-ppc64 RHEL 6 2.6.32-358.6.1.el6
red hat advisories RHSA-2014:0520RHSA-2013:0744RHSA-2014:0512RHSA-2014:0557RHSA-2014:0678
- kernel-source openSUSE Tumbleweed 4.8.13-1.1
opensuse advisories openSUSE-SU-2024:10128-1
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Check with FencerVendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2014-0196 updated cvss 6.9
kernel: pty layer race condition leading to memory corruption
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Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-123.1.2.el7, kernel 3.10.0-123.1.2.el7, kernel-tools 3.10.0-123.1.2.el7, kernel-tools-libs 3.10.0-123.1.2.el7, kernel-abi-whitelists 3.10.0-123.1.2.el7, kernel-debuginfo-common-x86_64 3.10.0-123.1.2.el7 Red Hat Enterprise Linux Client Optional (v. 7) python-perf 3.10.0-123.1.2.el7, kernel-debuginfo-common-x86_64 3.10.0-123.1.2.el7fixed: vendor fix RHSA-2014:0678
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Red Hat Enterprise Linux Compute Node EUS (v. 6.3) perf 2.6.32-279.43.2.el6, kernel 2.6.32-279.43.2.el6, kernel-firmware 2.6.32-279.43.2.el6, kernel-debuginfo-common-x86_64 2.6.32-279.43.2.el6 Red Hat Enterprise Linux Compute Node Optional EUS (v. 6.3) kernel 2.6.32-279.43.2.el6, python-perf 2.6.32-279.43.2.el6, kernel-debuginfo-common-x86_64 2.6.32-279.43.2.el6fixed: vendor fix RHSA-2014:0512
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Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-123.1.2.el7, kernel 3.10.0-123.1.2.el7, kernel-tools 3.10.0-123.1.2.el7, kernel-tools-libs 3.10.0-123.1.2.el7, kernel-abi-whitelists 3.10.0-123.1.2.el7, kernel-debuginfo-common-x86_64 3.10.0-123.1.2.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) python-perf 3.10.0-123.1.2.el7, kernel-debuginfo-common-x86_64 3.10.0-123.1.2.el7fixed: vendor fix RHSA-2014:0678
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Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-358.6.1.el6, kernel 2.6.32-358.6.1.el6, kernel-firmware 2.6.32-358.6.1.el6, kernel-debuginfo-common-i686 2.6.32-358.6.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.6.1.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) kernel 2.6.32-358.6.1.el6, python-perf 2.6.32-358.6.1.el6, kernel-debuginfo-common-i686 2.6.32-358.6.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.6.1.el6 Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-358.6.1.el6, kernel 2.6.32-358.6.1.el6, kernel-firmware 2.6.32-358.6.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.6.1.el6 Red Hat Enterprise Linux HPC Node Optional (v. 6) kernel 2.6.32-358.6.1.el6, python-perf 2.6.32-358.6.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.6.1.el6 Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-358.6.1.el6, kernel 2.6.32-358.6.1.el6, kernel-kdump 2.6.32-358.6.1.el6, kernel-firmware 2.6.32-358.6.1.el6, kernel-bootwrapper 2.6.32-358.6.1.el6, kernel-debuginfo-common-i686 2.6.32-358.6.1.el6, +3 morefixed: vendor fix RHSA-2013:0744
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Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-123.1.2.el7, kernel 3.10.0-123.1.2.el7, kernel-kdump 3.10.0-123.1.2.el7, kernel-tools 3.10.0-123.1.2.el7, kernel-tools-libs 3.10.0-123.1.2.el7, kernel-bootwrapper 3.10.0-123.1.2.el7, +4 morefixed: vendor fix RHSA-2014:0678
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Red Hat Enterprise Linux Server AUS (v. 6.2) perf 2.6.32-220.51.1.el6, kernel 2.6.32-220.51.1.el6, kernel-firmware 2.6.32-220.51.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.51.1.el6fixed: vendor fix RHSA-2014:0520
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Red Hat Enterprise Linux Server EUS (v. 6.3) perf 2.6.32-279.43.2.el6, kernel 2.6.32-279.43.2.el6, kernel-kdump 2.6.32-279.43.2.el6, kernel-firmware 2.6.32-279.43.2.el6, kernel-bootwrapper 2.6.32-279.43.2.el6, kernel-debuginfo-common-i686 2.6.32-279.43.2.el6, +3 morefixed: vendor fix RHSA-2014:0512
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Red Hat Enterprise Linux Server Optional (v. 6) kernel 2.6.32-358.6.1.el6, python-perf 2.6.32-358.6.1.el6, kernel-debuginfo-common-i686 2.6.32-358.6.1.el6, kernel-debuginfo-common-ppc64 2.6.32-358.6.1.el6, kernel-debuginfo-common-s390x 2.6.32-358.6.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.6.1.el6fixed: vendor fix RHSA-2013:0744
show 9 moreshow fewer
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Red Hat Enterprise Linux Server Optional (v. 7) python-perf 3.10.0-123.1.2.el7, kernel-debuginfo-common-ppc64 3.10.0-123.1.2.el7, kernel-debuginfo-common-s390x 3.10.0-123.1.2.el7, kernel-debuginfo-common-x86_64 3.10.0-123.1.2.el7fixed: vendor fix RHSA-2014:0678
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Red Hat Enterprise Linux Server Optional AUS (v. 6.2) kernel 2.6.32-220.51.1.el6, python-perf 2.6.32-220.51.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.51.1.el6fixed: vendor fix RHSA-2014:0520
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Red Hat Enterprise Linux Server Optional EUS (v. 6.3) kernel 2.6.32-279.43.2.el6, python-perf 2.6.32-279.43.2.el6, kernel-debuginfo-common-i686 2.6.32-279.43.2.el6, kernel-debuginfo-common-ppc64 2.6.32-279.43.2.el6, kernel-debuginfo-common-s390x 2.6.32-279.43.2.el6, kernel-debuginfo-common-x86_64 2.6.32-279.43.2.el6fixed: vendor fix RHSA-2014:0512
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Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-358.6.1.el6, kernel 2.6.32-358.6.1.el6, kernel-firmware 2.6.32-358.6.1.el6, kernel-debuginfo-common-i686 2.6.32-358.6.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.6.1.el6fixed: vendor fix RHSA-2013:0744
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Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-123.1.2.el7, kernel 3.10.0-123.1.2.el7, kernel-tools 3.10.0-123.1.2.el7, kernel-tools-libs 3.10.0-123.1.2.el7, kernel-abi-whitelists 3.10.0-123.1.2.el7, kernel-debuginfo-common-x86_64 3.10.0-123.1.2.el7fixed: vendor fix RHSA-2014:0678
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Red Hat Enterprise Linux Workstation Optional (v. 6) kernel 2.6.32-358.6.1.el6, python-perf 2.6.32-358.6.1.el6, kernel-debuginfo-common-i686 2.6.32-358.6.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.6.1.el6fixed: vendor fix RHSA-2013:0744
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Red Hat Enterprise Linux Workstation Optional (v. 7) python-perf 3.10.0-123.1.2.el7, kernel-debuginfo-common-x86_64 3.10.0-123.1.2.el7fixed: vendor fix RHSA-2014:0678
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Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 3.10.33-rt32.34.el6rt, kernel-rt-trace 3.10.33-rt32.34.el6rt, kernel-rt-vanilla 3.10.33-rt32.34.el6rt, kernel-rt-firmware 3.10.33-rt32.34.el6rt, kernel-rt-debuginfo-common-x86_64 3.10.33-rt32.34.el6rtfixed: vendor fix RHSA-2014:0557
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Red Hat Enterprise Linux 5 kernelnot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Timeline
- Published
- First public exploit (EDB-33516)
- Added to CISA KEV
- CISA patch deadline
- CISA SSVC: exploitation active
Known exploited
- Added
- 3y ago
- Patch by
- 2023-06-02 (3y ago)
- Ransomware
- Not known
- Required action
- The impacted product is end-of-life and should be disconnected if still in use.
- Vendor, product
- Linux, Kernel
- CISA name
- Linux Kernel Race Condition Vulnerability
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- no
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
20.33% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- EDB-33516 Linux Kernel 3.14-rc1 < 3.15-rc4 (x64) - Raw Mode PTY Echo Race Condition Privilege Escalation local, 2014-05-26
- github.com https://github.com/torvalds/linux/commit/4291086b1f081b869c6d79e5b7441633dc3ace00 referenced PoC, tagged "exploit" by a source, unverified
- pastebin.com http://pastebin.com/raw.php?i=yTSFUBgZ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| CNA | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 6.9 | AV:L/AC:M/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization
- Technology feeds
References
-
github.com
/torvalds/linux/commit/4291086b1f081b869c6d79e5b7441633dc3ace00
exploit, patch, third-party-advisory
-
bugzilla.redhat.com
/show_bug.cgi?id=1094232
issue-tracking, patch, third-party-advisory
-
exploit-db.com
/exploits/33516
exploit, third-party-advisory, vdb-entry
-
pastebin.com
/raw.php?i=yTSFUBgZ
exploit, mailing-list, third-party-advisory
-
ubuntu.com
/usn/USN-2203-1
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2014-05/msg00012.html
vendor-advisory, mailing-list, third-party-advisory
-
ubuntu.com
/usn/USN-2204-1
vendor-advisory, third-party-advisory
-
ubuntu.com
/usn/USN-2202-1
vendor-advisory, third-party-advisory
-
debian.org
/security/2014/dsa-2928
vendor-advisory, third-party-advisory
-
ubuntu.com
/usn/USN-2199-1
vendor-advisory, third-party-advisory
-
ubuntu.com
/usn/USN-2197-1
vendor-advisory, third-party-advisory
-
rhn.redhat.com
/errata/RHSA-2014-0512.html
vendor-advisory, third-party-advisory
-
debian.org
/security/2014/dsa-2926
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2014-05/msg00007.html
vendor-advisory, mailing-list, third-party-advisory
-
ubuntu.com
/usn/USN-2198-1
vendor-advisory, third-party-advisory
-
ubuntu.com
/usn/USN-2200-1
vendor-advisory, third-party-advisory
-
ubuntu.com
/usn/USN-2201-1
vendor-advisory, third-party-advisory
-
ubuntu.com
/usn/USN-2196-1
vendor-advisory, third-party-advisory
-
support.f5.com
/kb/en-us/solutions/public/15000/300/sol15319.html
third-party-advisory
-
osvdb.org
/106646
vdb-entry, broken-link
-
openwall.com
/lists/oss-security/2014/05/05/6
mailing-list, third-party-advisory
-
secunia.com
/advisories/59262
third-party-advisory, broken-link
-
secunia.com
/advisories/59218
third-party-advisory, not-applicable
-
linux.oracle.com
/errata/ELSA-2014-0771.html
third-party-advisory
-
source.android.com
/security/bulletin/2016-07-01.html
not-applicable
-
secunia.com
/advisories/59599
third-party-advisory, broken-link
-
git.kernel.org
/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=4291086b1f081b869c6d79e5b7441633dc3ace00
broken-link
-
bugzilla.novell.com
/show_bug.cgi?id=875690
issue-tracking, permissions-required, third-party-advisory
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2014-0196
government-resource, us-government-resource
Sources
- CVE List CVE-2014-0196
- NVD CVE-2014-0196
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.