{"id":"CVE-2011-1927","url":"https://www.cyber-defence.io/tools/cve/CVE-2011-1927","generatedAt":"2026-10-27T19:49:33.660Z","title":"The ip_expire function in net/ipv4/ip_fragment.c in the Linux kernel before 2.6.39 does not properly construct ICMP_TIME_EXCEEDED packets after a timeout, which allows remote attackers to cause a denial of service (invalid pointer dereference) via…","description":"The ip_expire function in net/ipv4/ip_fragment.c in the Linux kernel before 2.6.39 does not properly construct ICMP_TIME_EXCEEDED packets after a timeout, which allows remote attackers to cause a denial of service (invalid pointer dereference) via crafted fragmented packets.","published":"2012-06-13T10:24:54.000Z","lastModified":"2026-06-16T23:30:24.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"2.0","score":5,"severity":"MEDIUM","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P"},"cwe":[],"affected":["linux/linux kernel"],"epss":{"score":0.02561,"percentile":0.84992,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (2.56%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39","source":"secalert@redhat.com"},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=64f3b9e203bd06855072e295557dca1485a2ecba","source":"secalert@redhat.com"},{"url":"http://www.openwall.com/lists/oss-security/2011/05/18/2","source":"secalert@redhat.com"},{"url":"https://github.com/torvalds/linux/commit/64f3b9e203bd06855072e295557dca1485a2ecba","tags":["Exploit","Patch"],"source":"secalert@redhat.com"},{"url":"http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=64f3b9e203bd06855072e295557dca1485a2ecba","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2011/05/18/2","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/torvalds/linux/commit/64f3b9e203bd06855072e295557dca1485a2ecba","tags":["Exploit","Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2011-1927","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}