{"id":"CVE-2025-71120","revision":"9c9cc0721ca144eab186f0edf3bc4fb4","records":[{"revision":"9c9cc0721ca144eab186f0edf3bc4fb4","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-71120","aliases":[],"title":"SUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nSUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf\n\nA zero length gss_token results in pages == 0 and in_token->pages[0]\nis NULL. The code unconditionally evaluates\npage_address(in_token->pages[0]) for the initial memcpy, which can\ndereference NULL even when the copy length is 0. Guard the first\nmemcpy so it only runs when length > 0.","state":0,"publishedAt":"2026-01-14T15:06:07.194+00:00","modifiedAt":"2026-10-19T18:15:14.623+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/sunrpc/auth_gss/svcauth_gss.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5866efa8cbfbadf3905072798e96652faf02dbe8\",\n                            \"lessThan\": \"a8f1e445ce3545c90d69c9e8ff8f7821825fe810\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5866efa8cbfbadf3905072798e96652faf02dbe8\",\n                            \"lessThan\": \"4dedb6a11243a5c9eb9dbb97bca3c98bd725e83d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5866efa8cbfbadf3905072798e96652faf02dbe8\",\n                            \"lessThan\": \"f9e53f69ac3bc4ef568b08d3542edac02e83fefd\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5866efa8cbfbadf3905072798e96652faf02dbe8\",\n                            \"lessThan\": \"7452d53f293379e2c38cfa8ad0694aa46fc4788b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5866efa8cbfbadf3905072798e96652faf02dbe8\",\n                            \"lessThan\": \"a2c6f25ab98b423f99ccd94874d655b8bcb01a19\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5866efa8cbfbadf3905072798e96652faf02dbe8\",\n                            \"lessThan\": \"1c8bb965e9b0559ff0f5690615a527c30f651dd8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5866efa8cbfbadf3905072798e96652faf02dbe8\",\n                            \"lessThan\": \"d4b69a6186b215d2dc1ebcab965ed88e8d41768d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"66ed7b413d31c6ff23901ac4443b1cc1af2f6113\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7be8c165dc81564705e8e0b72d398ef708f67eaa\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4.19.99\",\n                            \"lessThan\": \"4.20\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.4.15\",\n                            \"lessThan\": \"5.5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/sunrpc/auth_gss/svcauth_gss.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.5\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.5\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.248\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.198\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.160\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.120\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.64\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.3\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.19\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/a8f1e445ce3545c90d69c9e8ff8f7821825fe810","https://git.kernel.org/stable/c/4dedb6a11243a5c9eb9dbb97bca3c98bd725e83d","https://git.kernel.org/stable/c/f9e53f69ac3bc4ef568b08d3542edac02e83fefd","https://git.kernel.org/stable/c/7452d53f293379e2c38cfa8ad0694aa46fc4788b","https://git.kernel.org/stable/c/a2c6f25ab98b423f99ccd94874d655b8bcb01a19","https://git.kernel.org/stable/c/1c8bb965e9b0559ff0f5690615a527c30f651dd8","https://git.kernel.org/stable/c/d4b69a6186b215d2dc1ebcab965ed88e8d41768d"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-71120","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-71120","identifiers":["CVE-2025-71120"]},"retained":false,"historicalAffected":[]}],"coverage":[]}