{"api_version":"1","generated_at":"2026-10-04T10:14:33+00:00","cve":"CVE-2026-97963","urls":{"html":"https://cve.report/CVE-2026-97963","api":"https://cve.report/api/cve/CVE-2026-97963.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-97963","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-97963"},"summary":{"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":"PUBLISHED","assigner":"Linux","published_at":"2026-09-25 11:17:24","updated_at":"2026-10-03 11:18:21"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/0338c68e22abd2ee509ec2e32508a50896618c32","name":"https://git.kernel.org/stable/c/0338c68e22abd2ee509ec2e32508a50896618c32","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b1986595cf827c38ff929e22fbc9ca8f76379306","name":"https://git.kernel.org/stable/c/b1986595cf827c38ff929e22fbc9ca8f76379306","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7ced87834f3a58761d4bbcabf8326478548e6a54","name":"https://git.kernel.org/stable/c/7ced87834f3a58761d4bbcabf8326478548e6a54","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/25cc0096efba83b4e0e6fa50f03e9543b41e9d3d","name":"https://git.kernel.org/stable/c/25cc0096efba83b4e0e6fa50f03e9543b41e9d3d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/420315413b29635de1d4ea4142e410e6465260f3","name":"https://git.kernel.org/stable/c/420315413b29635de1d4ea4142e410e6465260f3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ee33e424d4932c70f103b94a46b685923f236f65","name":"https://git.kernel.org/stable/c/ee33e424d4932c70f103b94a46b685923f236f65","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/79fb5bcc50996964e076dffbdc24b7d2c06bd957","name":"https://git.kernel.org/stable/c/79fb5bcc50996964e076dffbdc24b7d2c06bd957","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-97963","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97963","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b60189e0392fa06348911077ef281eb2b1047b6a ee33e424d4932c70f103b94a46b685923f236f65 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b60189e0392fa06348911077ef281eb2b1047b6a 7ced87834f3a58761d4bbcabf8326478548e6a54 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b60189e0392fa06348911077ef281eb2b1047b6a 79fb5bcc50996964e076dffbdc24b7d2c06bd957 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b60189e0392fa06348911077ef281eb2b1047b6a 420315413b29635de1d4ea4142e410e6465260f3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b60189e0392fa06348911077ef281eb2b1047b6a 25cc0096efba83b4e0e6fa50f03e9543b41e9d3d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b60189e0392fa06348911077ef281eb2b1047b6a b1986595cf827c38ff929e22fbc9ca8f76379306 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b60189e0392fa06348911077ef281eb2b1047b6a 0338c68e22abd2ee509ec2e32508a50896618c32 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.6","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.6 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.222 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.189 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.158 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.111 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.53 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.7 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"97963","cve":"CVE-2026-97963","epss":"0.001680000","percentile":"0.054770000","score_date":"2026-10-03","updated_at":"2026-10-04 00:03:16"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/ethernet/stmicro/stmmac/stmmac_main.c","drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"ee33e424d4932c70f103b94a46b685923f236f65","status":"affected","version":"b60189e0392fa06348911077ef281eb2b1047b6a","versionType":"git"},{"lessThan":"7ced87834f3a58761d4bbcabf8326478548e6a54","status":"affected","version":"b60189e0392fa06348911077ef281eb2b1047b6a","versionType":"git"},{"lessThan":"79fb5bcc50996964e076dffbdc24b7d2c06bd957","status":"affected","version":"b60189e0392fa06348911077ef281eb2b1047b6a","versionType":"git"},{"lessThan":"420315413b29635de1d4ea4142e410e6465260f3","status":"affected","version":"b60189e0392fa06348911077ef281eb2b1047b6a","versionType":"git"},{"lessThan":"25cc0096efba83b4e0e6fa50f03e9543b41e9d3d","status":"affected","version":"b60189e0392fa06348911077ef281eb2b1047b6a","versionType":"git"},{"lessThan":"b1986595cf827c38ff929e22fbc9ca8f76379306","status":"affected","version":"b60189e0392fa06348911077ef281eb2b1047b6a","versionType":"git"},{"lessThan":"0338c68e22abd2ee509ec2e32508a50896618c32","status":"affected","version":"b60189e0392fa06348911077ef281eb2b1047b6a","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/ethernet/stmicro/stmmac/stmmac_main.c","drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.6"},{"lessThan":"5.6","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.222","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.189","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.158","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.111","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.53","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.222","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.189","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.158","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.111","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.53","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.7","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc3","versionStartIncluding":"5.6","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-10-03T11:01:04.043Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/ee33e424d4932c70f103b94a46b685923f236f65"},{"url":"https://git.kernel.org/stable/c/7ced87834f3a58761d4bbcabf8326478548e6a54"},{"url":"https://git.kernel.org/stable/c/79fb5bcc50996964e076dffbdc24b7d2c06bd957"},{"url":"https://git.kernel.org/stable/c/420315413b29635de1d4ea4142e410e6465260f3"},{"url":"https://git.kernel.org/stable/c/25cc0096efba83b4e0e6fa50f03e9543b41e9d3d"},{"url":"https://git.kernel.org/stable/c/b1986595cf827c38ff929e22fbc9ca8f76379306"},{"url":"https://git.kernel.org/stable/c/0338c68e22abd2ee509ec2e32508a50896618c32"}],"title":"net: stmmac: initialize ptp_lock at probe time","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-97963","datePublished":"2026-09-25T10:23:06.749Z","dateReserved":"2026-09-25T10:18:58.206Z","dateUpdated":"2026-10-03T11:01:04.043Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-25 11:17:24","lastModifiedDate":"2026-10-03 11:18:21","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"97963","Ordinal":"1","Title":"net: stmmac: initialize ptp_lock at probe time","CVE":"CVE-2026-97963","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"97963","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"net: stmmac: initialize ptp_lock at probe time"}]}}}