{"id":"CVE-2025-40176","revision":"4b9c88b4c0da458a9530cd33ade66727","records":[{"revision":"4b9c88b4c0da458a9530cd33ade66727","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-40176","aliases":[],"title":"tls: wait for pending async decryptions if tls_strp_msg_hold fails","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntls: wait for pending async decryptions if tls_strp_msg_hold fails\n\nAsync decryption calls tls_strp_msg_hold to create a clone of the\ninput skb to hold references to the memory it uses. If we fail to\nallocate that clone, proceeding with async decryption can lead to\nvarious issues (UAF on the skb, writing into userspace memory after\nthe recv() call has returned).\n\nIn this case, wait for all pending decryption requests.","state":0,"publishedAt":"2025-11-12T10:53:50.443+00:00","modifiedAt":"2026-10-15T22:02:39.716+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/tls/tls_sw.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"84c61fe1a75b4255df1e1e7c054c9e6d048da417\",\n                            \"lessThan\": \"9f83fd0c179e0f458e824e417f9d5ad53443f685\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"84c61fe1a75b4255df1e1e7c054c9e6d048da417\",\n                            \"lessThan\": \"c61d4368197d65c4809d9271f3b85325a600586a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"84c61fe1a75b4255df1e1e7c054c9e6d048da417\",\n                            \"lessThan\": \"39dec4ea3daf77f684308576baf483b55ca7f160\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"84c61fe1a75b4255df1e1e7c054c9e6d048da417\",\n                            \"lessThan\": \"4fc109d0ab196bd943b7451276690fb6bb48c2e0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"84c61fe1a75b4255df1e1e7c054c9e6d048da417\",\n                            \"lessThan\": \"b8a6ff84abbcbbc445463de58704686011edc8e1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\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/tls/tls_sw.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.158\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.114\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.55\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.17.5\",\n                            \"lessThanOrEqual\": \"6.17.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18\",\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:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/9f83fd0c179e0f458e824e417f9d5ad53443f685","https://git.kernel.org/stable/c/c61d4368197d65c4809d9271f3b85325a600586a","https://git.kernel.org/stable/c/39dec4ea3daf77f684308576baf483b55ca7f160","https://git.kernel.org/stable/c/4fc109d0ab196bd943b7451276690fb6bb48c2e0","https://git.kernel.org/stable/c/b8a6ff84abbcbbc445463de58704686011edc8e1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-40176","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-40176","identifiers":["CVE-2025-40176"]},"retained":false,"historicalAffected":[]}],"coverage":[]}