CVE-2009-3043
The tty_ldisc_hangup function in drivers/char/tty_ldisc.c in the Linux kernel 2.6.31-rc before 2...
The tty_ldisc_hangup function in drivers/char/tty_ldisc.c in the Linux kernel 2.6.31-rc before 2.6.31-rc8 allows local users to cause a denial of service (system crash, sometimes preceded by a NULL pointer dereference) or possibly gain privileges via certain pseudo-terminal I/O activity, as demonstrated by KernelTtyTest.c.
Exploit likelihood
What each source reports
NVD Score used
The tty_ldisc_hangup function in drivers/char/tty_ldisc.c in the Linux kernel 2.6.31-rc before 2.6.31-rc8 allows local users to cause a denial of service (system crash, sometimes preceded by a NULL pointer dereference) or possibly gain privileges via certain pseudo-terminal I/O activity, as demonstrated by KernelTtyTest.c.
- Record
CVE-2009-3043- CVSS 2.0
- 4.9 Medium
AV:L/AC:L/Au:N/C:N/I:N/A:C - Weakness
- CWE-399
- Updated
- 2026-11-02
CVE List No score
The tty_ldisc_hangup function in drivers/char/tty_ldisc.c in the Linux kernel 2.6.31-rc before 2.6.31-rc8 allows local users to cause a denial of service (system crash, sometimes preceded by a NULL pointer dereference) or possibly gain privileges via certain pseudo-terminal I/O activity, as demonstrated by KernelTtyTest.c.
- Record
CVE-2009-3043- Updated
- 2026-11-02
EUVDEUVD-2009-3027 No score
The tty_ldisc_hangup function in drivers/char/tty_ldisc.c in the Linux kernel 2.6.31-rc before 2.6.31-rc8 allows local users to cause a denial of service (system crash, sometimes preceded by a NULL pointer dereference) or possibly gain privileges via certain pseudo-terminal I/O activity, as demonstrated by KernelTtyTest.c.
- Record
EUVD-2009-3027- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-j6rr-99wm-q9wm No score
The tty_ldisc_hangup function in drivers/char/tty_ldisc.c in the Linux kernel 2.6.31-rc before 2...
The tty_ldisc_hangup function in drivers/char/tty_ldisc.c in the Linux kernel 2.6.31-rc before 2.6.31-rc8 allows local users to cause a denial of service (system crash, sometimes preceded by a NULL pointer dereference) or possibly gain privileges via certain pseudo-terminal I/O activity, as demonstrated by KernelTtyTest.c.
- Record
GHSA-j6rr-99wm-q9wm- Updated
- 2026-11-02
OSVBELL-CVE-2009-3043
CVE-2009-3043 does not affect BellSoft software
- Record
BELL-CVE-2009-3043- CVSS 2.0
- 4.9 Medium
AV:L/AC:L/Au:N/C:N/I:N/A:C - Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Linux Kernel 2.6.x - 'drivers/char/tty_ldisc.c' Null Pointer Dereference Denial of Service | 2009-08-19 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2009-3043 is a medium vulnerability (CVSS 4.9) in Linux Kernel, published September 2, 2009. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.85%, the 58th percentile. No source names a fixed version.
References
git.kernel.org?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=5c58ceff103d8a654f24769bb1baaf84a841b0cc
lkml.org/lkml/2009/8/20/21
openwall.com/lists/oss-security/2009/09/03/6
kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc8
Show 7 moreShow less
securityfocus.com/bid/36191
nvd.nist.gov/vuln/detail/CVE-2009-3043
github.com/advisories/GHSA-j6rr-99wm-q9wm
docs.bell-sw.com/security/cves/CVE-2009-3043