{"cve":"CVE-2017-17805","nvd":{"published":"2017-12-20T23:29:00.327","modified":"2026-06-17T01:11:40.813","status":"Modified","description":"The Salsa20 encryption algorithm in the Linux kernel before 4.14.8 does not correctly handle zero-length inputs, allowing a local attacker able to use the AF_ALG-based skcipher interface (CONFIG_CRYPTO_USER_API_SKCIPHER) to cause a denial of service (uninitialized-memory free and kernel crash) or have unspecified other impact by executing a crafted sequence of system calls that use the blkcipher_walk API. Both the generic implementation (crypto/salsa20_generic.c) and x86 implementation (arch/x86/crypto/salsa20_glue.c) of Salsa20 were vulnerable.","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":["CWE-20"],"references":["http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ecaaab5649781c5a0effdaf298a925063020500e","http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00006.html","http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html","http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00008.html","http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00014.html"],"products":["canonical:ubuntu_linux","debian:debian_linux","linux:linux_kernel","opensuse:leap","opensuse_project:leap","suse:linux_enterprise_desktop","suse:linux_enterprise_server","suse:linux_enterprise_server_for_raspberry_pi"],"source":"nvd","synced_at":"2026-10-19T20:47:56.471723566+00:00"},"epss":{"cve":"CVE-2017-17805","score":0.00441,"percentile":0.38367,"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."]}