Race condition in the tty_ioctl function in drivers/tty/tty_io.c in the Linux kernel…
Priority LOW 30CWE-200Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · High
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-200.
Summary
Race condition in the tty_ioctl function in drivers/tty/tty_io.c in the Linux kernel through 4.4.1 allows local users to obtain sensitive information from kernel memory or cause a denial of service (use-after-free and system crash) by making a TIOCGETD ioctl call during processing of a TIOCSETD ioctl call.
Why it matters now
EPSS 0.00382 32nd percentileScored 2026-11-07
Fix Will not fix Red Hat: no fix planned
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise MRG 2 | Affected | No fix planned: Will not fix |
Timeline
- 2026-10-02 Threatist record created from CVE-2016-0723
- 2026-10-03 Alias added: GHSA-7c29-m4q4-fgp6
References
Advisory 20
- USN-2930-1
- USN-2967-1
- USN-2930-2
- DSA-3503
- USN-2967-2
- SUSE-SU-2016:1764
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5c17c861a357e9458001f021a7afa7aab9937439
- USN-2930-3
- SUSE-SU-2016:1102
- USN-2929-1
- USN-2932-1
- FEDORA-2016-5d43766e33
- SUSE-SU-2016:2074
- USN-2948-1
- DSA-3448
- openSUSE-SU-2016:1008
- USN-2929-2
- USN-2948-2
- FEDORA-2016-2f25d12c51
- SUSE-SU-2016:0911
Other 7
- https://security-tracker.debian.org/tracker/CVE-2016-0723
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1296253
- http://source.android.com/security/bulletin/2016-07-01.html
- http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html
- https://github.com/torvalds/linux/commit/5c17c861a357e9458001f021a7afa7aab9937439
- https://support.f5.com/csp/article/K43650115
More Linux Kernel vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2016-0723 · CVE Program
- CVE-2016-0723 · NVD
- FIRST EPSS
- GHSA-7c29-m4q4-fgp6 · GitHub Advisory Database · CC BY 4.0
- CVE-2016-0723 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences