CVE-2009-3043 EXPLOIT
4.9
MEDIUM · CVSS 2.0 · EPSS 0.9% (pctl 57)
Patch early
A public exploit exists.
Description
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.
Scoring
| CVSS | 4.9 (MEDIUM, v2.0) |
|---|---|
| Vector | AV:L/AC:L/Au:N/C:N/I:N/A:C |
| EPSS | 0.85% — more likely to be exploited than 57% of all CVEs |
| Weakness | CWE-399 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2009-09-02 |
| Last modified | 2026-06-16 |
Affected (1)
| Vendor | Product |
|---|---|
| linux | linux kernel |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Linux Kernel 2.6.x - 'drivers/char/tty_ldisc.c' Null Pointer Dereference Denial of Service | 2009-08-19 |
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=5c58ceff103d8a654f24769bb1baaf84a841b0cc
- http://lkml.org/lkml/2009/8/20/21
- http://lkml.org/lkml/2009/8/20/27
- http://lkml.org/lkml/2009/8/20/68
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc8
- http://www.openwall.com/lists/oss-security/2009/08/31/1
- http://www.openwall.com/lists/oss-security/2009/09/03/6
- http://www.openwall.com/lists/oss-security/2009/09/03/7
- http://www.securityfocus.com/bid/36191
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=5c58ceff103d8a654f24769bb1baaf84a841b0cc
- http://lkml.org/lkml/2009/8/20/21
- http://lkml.org/lkml/2009/8/20/27
- http://lkml.org/lkml/2009/8/20/68
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc8
- http://www.openwall.com/lists/oss-security/2009/08/31/1
- http://www.openwall.com/lists/oss-security/2009/09/03/6
- http://www.openwall.com/lists/oss-security/2009/09/03/7
- http://www.securityfocus.com/bid/36191
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