{"cve":"CVE-2026-89606","nvd":{"published":"2026-09-11T20:19:45.603","modified":"2026-10-19T09:17:57.093","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\necryptfs: reject too-small tag 70 packets\n\necryptfs_parse_tag_70_packet() subtracts fixed metadata fields from the\nparsed packet body size to derive the encrypted filename size.  A\nmalformed packet with a body smaller than those fixed fields can underflow\nthat size calculation.\n\nReject tag 70 packets before the subtraction unless the body contains the\nsignature, cipher code, and at least one byte of encrypted filename data.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":[],"references":["https://git.kernel.org/stable/c/2e5afed9503dd1d85004c09503adc2cb584c0188","https://git.kernel.org/stable/c/414a0f04feb06f03523edf7e2a8be1d7f1a9b160","https://git.kernel.org/stable/c/5668121974eb7f7aa82793a9d0d13abadb8904dc","https://git.kernel.org/stable/c/9d88391bbed76eb091cddd50b0af87b1c6f22589","https://git.kernel.org/stable/c/b31da1ecf13929a8d7f8d2727843d2fe35396b75"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:53:43.293028046+00:00"},"epss":{"cve":"CVE-2026-89606","score":0.00139,"percentile":0.03211,"date":"2026-10-25"},"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."]}