CVE-2009-3043
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…
- 4.9MediumCVSS base score
- 0.85%Exploitation in 30 daysEPSS · top 41% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it.
Show the exploits1
Exploit-DB1 entry
- Linux Kernel 2.6.x - 'drivers/char/tty_ldisc.c' Null Pointer Dereference Denial of Service (Exploit-DB entry) (opens in a new tab)
EDB-ID 33193dos, linuxpublished 19 Aug 2009Verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
Published
- 15 years later
· 15 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium4.9 | AV:L/AC:L/Au:N/C:N/I:N/A:C |
- EPSS (exploitation in 30 days)
- 0.85% · top 41% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.9.
Affected products
n/a
- affected n/a
References
References9
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=5c58ceff103d8a654f24769bb1baaf84a841b0cc (opens in a new tab)x_refsource_CONFIRMx_transferred
- [linux-kernel] 20090819 v2.6.31-rc6: BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [oss-security] 20090903 Re: CVE request: kernel: tty: make sure to flush any pending work when halting the ldisc (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc8 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20090904 Re: CVE request: kernel: tty: make sure to flush any pending work when halting the ldisc (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [linux-kernel] 20090820 Re: v2.6.31-rc6: BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 36191 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- [oss-security] 20090831 CVE request: kernel: tty: make sure to flush any pending work when halting the ldisc (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [linux-kernel] 20090819 Re: v2.6.31-rc6: BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2009-3027 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2009-3043)Record last updated .