{"id":"CVE-2026-97963","revision":"fffedc97cda94e7ea7ca09fa7bbb9703","records":[{"revision":"fffedc97cda94e7ea7ca09fa7bbb9703","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-97963","aliases":[],"title":"net: stmmac: initialize ptp_lock at probe time","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: stmmac: initialize ptp_lock at probe time\n\npriv->ptp_lock is only initialized in stmmac_ptp_register(), which runs\nduring __stmmac_open(). However, the lock is also used while the\ninterface is down and has never been opened: tc_taprio_configure()\ninvokes the PTP gettime64() callback to compute the EST base time when\noffloading a TAPRIO schedule, and stmmac_get_time() takes\npriv->ptp_lock. Using an uninitialized rwlock is undefined behaviour.\nMove the rwlock_init() to __stmmac_dvr_probe(), together with the other\nprivate locks, so that ptp_lock is always valid regardless of the\ninterface state.","state":0,"publishedAt":"2026-09-25T10:23:06.749+00:00","modifiedAt":"2026-10-19T09:11:29.173+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                        \"drivers/net/ethernet/stmicro/stmmac/stmmac_main.c\",\n                        \"drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"b60189e0392fa06348911077ef281eb2b1047b6a\",\n                            \"lessThan\": \"ee33e424d4932c70f103b94a46b685923f236f65\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b60189e0392fa06348911077ef281eb2b1047b6a\",\n                            \"lessThan\": \"7ced87834f3a58761d4bbcabf8326478548e6a54\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b60189e0392fa06348911077ef281eb2b1047b6a\",\n                            \"lessThan\": \"79fb5bcc50996964e076dffbdc24b7d2c06bd957\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b60189e0392fa06348911077ef281eb2b1047b6a\",\n                            \"lessThan\": \"420315413b29635de1d4ea4142e410e6465260f3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b60189e0392fa06348911077ef281eb2b1047b6a\",\n                            \"lessThan\": \"25cc0096efba83b4e0e6fa50f03e9543b41e9d3d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b60189e0392fa06348911077ef281eb2b1047b6a\",\n                            \"lessThan\": \"b1986595cf827c38ff929e22fbc9ca8f76379306\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b60189e0392fa06348911077ef281eb2b1047b6a\",\n                            \"lessThan\": \"0338c68e22abd2ee509ec2e32508a50896618c32\",\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                        \"drivers/net/ethernet/stmicro/stmmac/stmmac_main.c\",\n                        \"drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.6\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.222\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.189\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.158\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.111\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.53\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.7\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/ee33e424d4932c70f103b94a46b685923f236f65","https://git.kernel.org/stable/c/7ced87834f3a58761d4bbcabf8326478548e6a54","https://git.kernel.org/stable/c/79fb5bcc50996964e076dffbdc24b7d2c06bd957","https://git.kernel.org/stable/c/420315413b29635de1d4ea4142e410e6465260f3","https://git.kernel.org/stable/c/25cc0096efba83b4e0e6fa50f03e9543b41e9d3d","https://git.kernel.org/stable/c/b1986595cf827c38ff929e22fbc9ca8f76379306","https://git.kernel.org/stable/c/0338c68e22abd2ee509ec2e32508a50896618c32"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-97963","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-97963","identifiers":["CVE-2026-97963"]},"retained":false,"historicalAffected":[]}],"coverage":[]}