CVE-2026-97963

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-97963", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:18:58.206Z", "datePublished": "2026-09-25T10:23:06.749Z", "dateUpdated": "2026-10-19T09:11:29.173Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:11:29.173Z"}, "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/stmicro/stmmac/stmmac_main.c", "drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c"], "versions": [{"version": "b60189e0392fa06348911077ef281eb2b1047b6a", "lessThan": "ee33e424d4932c70f103b94a46b685923f236f65", "status": "affected", "versionType": "git"}, {"version": "b60189e0392fa06348911077ef281eb2b1047b6a", "lessThan": "7ced87834f3a58761d4bbcabf8326478548e6a54", "status": "affected", "versionType": "git"}, {"version": "b60189e0392fa06348911077ef281eb2b1047b6a", "lessThan": "79fb5bcc50996964e076dffbdc24b7d2c06bd957", "status": "affected", "versionType": "git"}, {"version": "b60189e0392fa06348911077ef281eb2b1047b6a", "lessThan": "420315413b29635de1d4ea4142e410e6465260f3", "status": "affected", "versionType": "git"}, {"version": "b60189e0392fa06348911077ef281eb2b1047b6a", "lessThan": "25cc0096efba83b4e0e6fa50f03e9543b41e9d3d", "status": "affected", "versionType": "git"}, {"version": "b60189e0392fa06348911077ef281eb2b1047b6a", "lessThan": "b1986595cf827c38ff929e22fbc9ca8f76379306", "status": "affected", "versionType": "git"}, {"version": "b60189e0392fa06348911077ef281eb2b1047b6a", "lessThan": "0338c68e22abd2ee509ec2e32508a50896618c32", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/stmicro/stmmac/stmmac_main.c", "drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c"], "versions": [{"version": "5.6", "status": "affected"}, {"version": "0", "lessThan": "5.6", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.222", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.189", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.111", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.53", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.7", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "5.15.222"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.12.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "7.2.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "7.3"}]}]}], "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"}}}}

{}

{"affected": [{"affectedData": [{"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", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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."}], "id": "CVE-2026-97963", "lastModified": "2026-10-19T10:17:47.687", "metrics": {}, "published": "2026-09-25T11:17:24.080", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0338c68e22abd2ee509ec2e32508a50896618c32"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/25cc0096efba83b4e0e6fa50f03e9543b41e9d3d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/420315413b29635de1d4ea4142e410e6465260f3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/79fb5bcc50996964e076dffbdc24b7d2c06bd957"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7ced87834f3a58761d4bbcabf8326478548e6a54"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b1986595cf827c38ff929e22fbc9ca8f76379306"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ee33e424d4932c70f103b94a46b685923f236f65"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: net: stmmac: initialize ptp_lock at probe time", "id": "2541153", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2541153"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-908", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: stmmac: initialize ptp_lock at probe time\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.", "A flaw was found in the Linux kernel's stmmac network driver. An uninitialized read-write lock is accessed when configuring traffic control scheduling on an interface that has not been brought up. A local user with network administration privileges could exploit this flaw to cause a kernel crash, resulting in a Denial of Service (DoS)."], "name": "CVE-2026-97963", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-97963\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-97963\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97963.mbox"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b60189e0392fa06348911077ef281eb2b1047b6a,420315413b29635de1d4ea4142e410e6465260f3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b60189e0392fa06348911077ef281eb2b1047b6a,25cc0096efba83b4e0e6fa50f03e9543b41e9d3d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b60189e0392fa06348911077ef281eb2b1047b6a,b1986595cf827c38ff929e22fbc9ca8f76379306)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b60189e0392fa06348911077ef281eb2b1047b6a,0338c68e22abd2ee509ec2e32508a50896618c32)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "5.6"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.6)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.111,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.53,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.7,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc3,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-25T14:45:18.439080+00:00", "updated": "2026-10-01T07:30:02.546834+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}