{"id":"CVE-2009-2844","aliases":["BELL-CVE-2009-2844","EUVD-2009-2834","GHSA-h6cm-xhvp-x8jm"],"status":"published","title":"cfg80211 in net/wireless/scan.c in the Linux kernel 2.6.30-rc1 and other versions before 2.6.31...","description":"cfg80211 in net/wireless/scan.c in the Linux kernel 2.6.30-rc1 and other versions before 2.6.31-rc6 allows remote attackers to cause a denial of service (crash) via a sequence of beacon frames in which one frame omits an SSID Information Element (IE) and the subsequent frame contains an SSID IE, which triggers a NULL pointer dereference in the cmp_ies function.  NOTE: a potential weakness in the is_mesh function was also addressed, but the relevant condition did not exist in the code, so it is not a vulnerability.","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":"2026-11-09","score":0.03357,"percentile":0.888,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-399"],"published":"2009-08-18T20:41:00Z","modified":"2026-06-16T23:10:20Z","products":[{"vendor":"linux","product":"kernel"},{"vendor":"linux","product":"linux_kernel"}],"references":[{"url":"http://secunia.com/advisories/36278","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred"]},{"url":"http://jon.oberheide.org/files/cfg80211-remote-dos.c","tags":["x_refsource_MISC","x_transferred","Patch"]},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=cd3468bad96c00b5a512f551674f36776129520e","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://www.openwall.com/lists/oss-security/2009/08/17/2","tags":["mailing-list","x_refsource_MLIST","x_transferred","Patch"]},{"url":"http://www.openwall.com/lists/oss-security/2009/08/17/1","tags":["mailing-list","x_refsource_MLIST","x_transferred","Patch"]},{"url":"http://www.securityfocus.com/bid/36052","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.30.5","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-2844"},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=cd3468bad96c00b5a512f551674f36776129520e"},{"url":"https://github.com/advisories/GHSA-h6cm-xhvp-x8jm"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2009-2844","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2009-2844","description":"cfg80211 in net/wireless/scan.c in the Linux kernel 2.6.30-rc1 and other versions before 2.6.31-rc6 allows remote attackers to cause a denial of service (crash) via a sequence of beacon frames in which one frame omits an SSID Information Element (IE) and the subsequent frame contains an SSID IE, which triggers a NULL pointer dereference in the cmp_ies function.  NOTE: a potential weakness in the is_mesh function was also addressed, but the relevant condition did not exist in the code, so it is not a vulnerability.","status":"published","published":"2009-08-18T20:41:00Z","modified":"2024-08-07T06:07:37.259Z","updated_at":"2026-11-02T14:33:23.395558Z"}],"euvd":[{"id":"EUVD-2009-2834","description":"cfg80211 in net/wireless/scan.c in the Linux kernel 2.6.30-rc1 and other versions before 2.6.31-rc6 allows remote attackers to cause a denial of service (crash) via a sequence of beacon frames in which one frame omits an SSID Information Element (IE) and the subsequent frame contains an SSID IE, which triggers a NULL pointer dereference in the cmp_ies function.  NOTE: a potential weakness in the is_mesh function was also addressed, but the relevant condition did not exist in the code, so it is not a vulnerability.","status":"published","published":"2009-08-18T20:41:00Z","modified":"2024-08-07T06:07:37Z","updated_at":"2026-11-03T01:39:15.952935Z"}],"ghsa":[{"id":"GHSA-h6cm-xhvp-x8jm","title":"cfg80211 in net/wireless/scan.c in the Linux kernel 2.6.30-rc1 and other versions before 2.6.31...","description":"cfg80211 in net/wireless/scan.c in the Linux kernel 2.6.30-rc1 and other versions before 2.6.31-rc6 allows remote attackers to cause a denial of service (crash) via a sequence of beacon frames in which one frame omits an SSID Information Element (IE) and the subsequent frame contains an SSID IE, which triggers a NULL pointer dereference in the cmp_ies function.  NOTE: a potential weakness in the is_mesh function was also addressed, but the relevant condition did not exist in the code, so it is not a vulnerability.","status":"published","published":"2022-05-02T03:39:02Z","modified":"2025-04-09T04:14:06Z","updated_at":"2026-11-02T15:01:00.53445Z"}],"nvd":[{"id":"CVE-2009-2844","description":"cfg80211 in net/wireless/scan.c in the Linux kernel 2.6.30-rc1 and other versions before 2.6.31-rc6 allows remote attackers to cause a denial of service (crash) via a sequence of beacon frames in which one frame omits an SSID Information Element (IE) and the subsequent frame contains an SSID IE, which triggers a NULL pointer dereference in the cmp_ies function.  NOTE: a potential weakness in the is_mesh function was also addressed, but the relevant condition did not exist in the code, so it is not a vulnerability.","status":"published","published":"2009-08-18T21:00:00.313Z","modified":"2026-06-16T23:10:20.417Z","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-399"],"updated_at":"2026-11-02T14:01:36.200173Z"}],"osv":[{"id":"BELL-CVE-2009-2844","title":"CVE-2009-2844 does not affect BellSoft software","status":"withdrawn","published":"2009-08-18T21:00:00Z","modified":"2026-01-28T07:22:11.359795Z","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"}]}}