{"cve":"CVE-2011-1927","nvd":{"published":"2012-06-13T10:24:54.343","modified":"2026-06-16T23:30:24.490","status":"Modified","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.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39","http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=64f3b9e203bd06855072e295557dca1485a2ecba","http://www.openwall.com/lists/oss-security/2011/05/18/2","https://github.com/torvalds/linux/commit/64f3b9e203bd06855072e295557dca1485a2ecba","http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T20:24:00.973572543+00:00"},"epss":{"cve":"CVE-2011-1927","score":0.02561,"percentile":0.85104,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}