{"id":"CVE-2009-3043","aliases":["BELL-CVE-2009-3043","EUVD-2009-3027","GHSA-j6rr-99wm-q9wm"],"status":"published","title":"The tty_ldisc_hangup function in drivers/char/tty_ldisc.c in the Linux kernel 2.6.31-rc before 2...","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.","severity":{"version":"2.0","score":4.9,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:C","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00852,"percentile":0.58518,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-399"],"published":"2009-09-02T17:00:00Z","modified":"2026-06-16T23:10:47Z","exploits":[{"source":"exploitdb","id":"EDB-33193","title":"Linux Kernel 2.6.x - 'drivers/char/tty_ldisc.c' Null Pointer Dereference Denial of Service","type":"dos","platform":"linux","date":"2009-08-19","verified":true,"url":"https://www.exploit-db.com/exploits/33193"}],"products":[{"vendor":"linux","product":"linux_kernel"}],"references":[{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=5c58ceff103d8a654f24769bb1baaf84a841b0cc","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://lkml.org/lkml/2009/8/20/21","tags":["mailing-list","x_refsource_MLIST","x_transferred","Exploit"]},{"url":"http://www.openwall.com/lists/oss-security/2009/09/03/6","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc8","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://www.openwall.com/lists/oss-security/2009/09/03/7","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"http://lkml.org/lkml/2009/8/20/68","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"http://www.securityfocus.com/bid/36191","tags":["vdb-entry","x_refsource_BID","x_transferred","Exploit","Patch"]},{"url":"http://www.openwall.com/lists/oss-security/2009/08/31/1","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"http://lkml.org/lkml/2009/8/20/27","tags":["mailing-list","x_refsource_MLIST","x_transferred","Exploit"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-3043"},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5c58ceff103d8a654f24769bb1baaf84a841b0cc"},{"url":"https://github.com/advisories/GHSA-j6rr-99wm-q9wm"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2009-3043","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2009-3043","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.","status":"published","published":"2009-09-02T17:00:00Z","modified":"2024-08-07T06:14:55.483Z","updated_at":"2026-11-02T14:33:24.10565Z"}],"euvd":[{"id":"EUVD-2009-3027","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.","status":"published","published":"2009-09-02T17:00:00Z","modified":"2024-08-07T06:14:55Z","updated_at":"2026-11-03T01:39:15.098818Z"}],"ghsa":[{"id":"GHSA-j6rr-99wm-q9wm","title":"The tty_ldisc_hangup function in drivers/char/tty_ldisc.c in the Linux kernel 2.6.31-rc before 2...","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.","status":"published","published":"2022-05-02T03:41:01Z","modified":"2025-04-09T04:14:51Z","updated_at":"2026-11-02T15:01:01.075702Z"}],"nvd":[{"id":"CVE-2009-3043","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.","status":"published","published":"2009-09-02T17:30:00.907Z","modified":"2026-06-16T23:10:47.21Z","cvss":[{"version":"2.0","score":4.9,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-399"],"updated_at":"2026-11-02T14:01:36.596719Z"}],"osv":[{"id":"BELL-CVE-2009-3043","title":"CVE-2009-3043 does not affect BellSoft software","status":"withdrawn","published":"2009-09-02T17:30:00Z","modified":"2026-01-28T07:22:12.165098Z","cvss":[{"version":"2.0","score":4.9,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:C","level":"medium"}],"updated_at":"2026-11-02T15:28:12.886815Z"}]}}