{"id":"CVE-2007-3642","aliases":["BELL-CVE-2007-3642","DSA-1356-1","EUVD-2007-3626","GHSA-jxh4-j45j-4gp9"],"status":"published","title":"The decode_choice function in net/netfilter/nf_conntrack_h323_asn1.c in the Linux kernel before 2...","description":"The decode_choice function in net/netfilter/nf_conntrack_h323_asn1.c in the Linux kernel before 2.6.20.15, 2.6.21.x before 2.6.21.6, and before 2.6.22 allows remote attackers to cause a denial of service (crash) via an encoded, out-of-range index value for a choice field, which triggers a NULL pointer dereference.","severity":{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.03872,"percentile":0.90276,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-189"],"published":"2007-07-10T01:00:00Z","modified":"2026-06-16T22:42:26Z","affected":[{"source":"osv","ecosystem":"Debian:4.0","package":"linux-2.6","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.18.dfsg.1-13etch1"}]}],"versions":["2.6.18.dfsg.1-12","2.6.18.dfsg.1-12etch1","2.6.18.dfsg.1-12etch2","2.6.18.dfsg.1-13"],"bundled":11}],"products":[{"vendor":"linux","product":"linux_kernel"}],"references":[{"url":"http://secunia.com/advisories/27212","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory"]},{"url":"http://secunia.com/advisories/25955","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Patch","Vendor Advisory"]},{"url":"http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.21.6","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://www.ubuntu.com/usn/usn-510-1","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred"]},{"url":"http://www.debian.org/security/2007/dsa-1356","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred"]},{"url":"http://www.securityfocus.com/bid/24818","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://www.vupen.com/english/advisories/2007/2466","tags":["vdb-entry","x_refsource_VUPEN","x_transferred","Vendor Advisory"]},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=25845b5155b55cd77e42655ec24161ba3feffa47","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.20.15","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://osvdb.org/37117","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://secunia.com/advisories/26450","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory"]},{"url":"http://www.mandriva.com/security/advisories?name=MDKSA-2007:195","tags":["vendor-advisory","x_refsource_MANDRIVA","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2007-3642"},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=25845b5155b55cd77e42655ec24161ba3feffa47"},{"url":"https://github.com/advisories/GHSA-jxh4-j45j-4gp9"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2007-3642","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2007-3642","description":"The decode_choice function in net/netfilter/nf_conntrack_h323_asn1.c in the Linux kernel before 2.6.20.15, 2.6.21.x before 2.6.21.6, and before 2.6.22 allows remote attackers to cause a denial of service (crash) via an encoded, out-of-range index value for a choice field, which triggers a NULL pointer dereference.","status":"published","published":"2007-07-10T01:00:00Z","modified":"2024-08-07T14:21:36.481Z","updated_at":"2026-11-02T13:32:45.563938Z"}],"euvd":[{"id":"EUVD-2007-3626","description":"The decode_choice function in net/netfilter/nf_conntrack_h323_asn1.c in the Linux kernel before 2.6.20.15, 2.6.21.x before 2.6.21.6, and before 2.6.22 allows remote attackers to cause a denial of service (crash) via an encoded, out-of-range index value for a choice field, which triggers a NULL pointer dereference.","status":"published","published":"2007-07-10T01:00:00Z","modified":"2024-08-07T14:21:36Z","updated_at":"2026-11-03T01:16:25.385611Z"}],"ghsa":[{"id":"GHSA-jxh4-j45j-4gp9","title":"The decode_choice function in net/netfilter/nf_conntrack_h323_asn1.c in the Linux kernel before 2...","description":"The decode_choice function in net/netfilter/nf_conntrack_h323_asn1.c in the Linux kernel before 2.6.20.15, 2.6.21.x before 2.6.21.6, and before 2.6.22 allows remote attackers to cause a denial of service (crash) via an encoded, out-of-range index value for a choice field, which triggers a NULL pointer dereference.","status":"published","published":"2022-05-01T18:15:45Z","modified":"2025-04-09T03:44:52Z","updated_at":"2026-11-02T15:00:54.343663Z"}],"nvd":[{"id":"CVE-2007-3642","description":"The decode_choice function in net/netfilter/nf_conntrack_h323_asn1.c in the Linux kernel before 2.6.20.15, 2.6.21.x before 2.6.21.6, and before 2.6.22 allows remote attackers to cause a denial of service (crash) via an encoded, out-of-range index value for a choice field, which triggers a NULL pointer dereference.","status":"published","published":"2007-07-10T01:30:00Z","modified":"2026-06-16T22:42:26.22Z","cvss":[{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-189"],"updated_at":"2026-11-02T14:01:17.002124Z"}],"osv":[{"id":"BELL-CVE-2007-3642","title":"CVE-2007-3642 does not affect BellSoft software","status":"withdrawn","published":"2007-07-10T01:30:00Z","modified":"2026-01-28T07:21:54.081707Z","cvss":[{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high"}],"updated_at":"2026-11-02T15:28:12.886815Z"},{"id":"DSA-1356-1","title":"linux-2.6 - several vulnerabilities","status":"published","published":"2007-08-15T00:00:00Z","modified":"2026-03-09T01:01:49.38057Z","updated_at":"2026-11-02T15:46:14.285228Z"}]}}