CVE-2026-97434

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-97434", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-24T14:53:16.869Z", "datePublished": "2026-09-24T16:03:47.069Z", "dateUpdated": "2026-10-03T10:58:18.766Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-03T10:58:18.766Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndpaa2-switch: fix handling of NAPI on the remove path\n\nAll the NAPI instances for a DPSW device are attached to the first\nswitch port's net_device but shared by all ports. The NAPI instances get\ndisabled only once the last port goes down.\n\nThis causes an issue on the .remove() path where each port is\nunregistered and freed one at a time, causing the NAPI instances to be\ndeleted even though they are not disabled.\n\nIn order to avoid this, split up the unregister_netdev() calls from the\nfree_netdev() so that we make sure all ports go down before we attempt\na deletion of NAPI instances. Also, make the netif_napi_del() explicit\nas it is on the .probe() path."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c"], "versions": [{"version": "0b1b71370458860579831e77485883fcf2e8fbbe", "lessThan": "d39603e21087e9ef9cd125e5895cdc70b2eb154d", "status": "affected", "versionType": "git"}, {"version": "0b1b71370458860579831e77485883fcf2e8fbbe", "lessThan": "bd16f46d0796109d241d6311a7577f9956467c96", "status": "affected", "versionType": "git"}, {"version": "0b1b71370458860579831e77485883fcf2e8fbbe", "lessThan": "c996faba71fc465ad12c6d177bd1a9ad974f9ee8", "status": "affected", "versionType": "git"}, {"version": "0b1b71370458860579831e77485883fcf2e8fbbe", "lessThan": "569df157eb874cb3b50554d73b89f31599397b42", "status": "affected", "versionType": "git"}, {"version": "0b1b71370458860579831e77485883fcf2e8fbbe", "lessThan": "6518f87771c8833e587bd9881346fa759651c2ae", "status": "affected", "versionType": "git"}, {"version": "0b1b71370458860579831e77485883fcf2e8fbbe", "lessThan": "e23d7c8c1d4ba435c457d7ffb2669175ec819b07", "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/freescale/dpaa2/dpaa2-switch.c"], "versions": [{"version": "5.13", "status": "affected"}, {"version": "0", "lessThan": "5.13", "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", "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": "5.13", "versionEndExcluding": "5.15.222"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.12.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/d39603e21087e9ef9cd125e5895cdc70b2eb154d"}, {"url": "https://git.kernel.org/stable/c/bd16f46d0796109d241d6311a7577f9956467c96"}, {"url": "https://git.kernel.org/stable/c/c996faba71fc465ad12c6d177bd1a9ad974f9ee8"}, {"url": "https://git.kernel.org/stable/c/569df157eb874cb3b50554d73b89f31599397b42"}, {"url": "https://git.kernel.org/stable/c/6518f87771c8833e587bd9881346fa759651c2ae"}, {"url": "https://git.kernel.org/stable/c/e23d7c8c1d4ba435c457d7ffb2669175ec819b07"}], "title": "dpaa2-switch: fix handling of NAPI on the remove path", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "d39603e21087e9ef9cd125e5895cdc70b2eb154d", "status": "affected", "version": "0b1b71370458860579831e77485883fcf2e8fbbe", "versionType": "git"}, {"lessThan": "bd16f46d0796109d241d6311a7577f9956467c96", "status": "affected", "version": "0b1b71370458860579831e77485883fcf2e8fbbe", "versionType": "git"}, {"lessThan": "c996faba71fc465ad12c6d177bd1a9ad974f9ee8", "status": "affected", "version": "0b1b71370458860579831e77485883fcf2e8fbbe", "versionType": "git"}, {"lessThan": "569df157eb874cb3b50554d73b89f31599397b42", "status": "affected", "version": "0b1b71370458860579831e77485883fcf2e8fbbe", "versionType": "git"}, {"lessThan": "6518f87771c8833e587bd9881346fa759651c2ae", "status": "affected", "version": "0b1b71370458860579831e77485883fcf2e8fbbe", "versionType": "git"}, {"lessThan": "e23d7c8c1d4ba435c457d7ffb2669175ec819b07", "status": "affected", "version": "0b1b71370458860579831e77485883fcf2e8fbbe", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.13"}, {"lessThan": "5.13", "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": "*", "status": "unaffected", "version": "7.2", "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\ndpaa2-switch: fix handling of NAPI on the remove path\n\nAll the NAPI instances for a DPSW device are attached to the first\nswitch port's net_device but shared by all ports. The NAPI instances get\ndisabled only once the last port goes down.\n\nThis causes an issue on the .remove() path where each port is\nunregistered and freed one at a time, causing the NAPI instances to be\ndeleted even though they are not disabled.\n\nIn order to avoid this, split up the unregister_netdev() calls from the\nfree_netdev() so that we make sure all ports go down before we attempt\na deletion of NAPI instances. Also, make the netif_napi_del() explicit\nas it is on the .probe() path."}], "id": "CVE-2026-97434", "lastModified": "2026-10-03T11:17:54.850", "metrics": {}, "published": "2026-09-24T17:17:21.453", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/569df157eb874cb3b50554d73b89f31599397b42"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6518f87771c8833e587bd9881346fa759651c2ae"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bd16f46d0796109d241d6311a7577f9956467c96"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c996faba71fc465ad12c6d177bd1a9ad974f9ee8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d39603e21087e9ef9cd125e5895cdc70b2eb154d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e23d7c8c1d4ba435c457d7ffb2669175ec819b07"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: dpaa2-switch: fix handling of NAPI on the remove path", "id": "2540559", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2540559"}, "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-826", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndpaa2-switch: fix handling of NAPI on the remove path\nAll the NAPI instances for a DPSW device are attached to the first\nswitch port's net_device but shared by all ports. The NAPI instances get\ndisabled only once the last port goes down.\nThis causes an issue on the .remove() path where each port is\nunregistered and freed one at a time, causing the NAPI instances to be\ndeleted even though they are not disabled.\nIn order to avoid this, split up the unregister_netdev() calls from the\nfree_netdev() so that we make sure all ports go down before we attempt\na deletion of NAPI instances. Also, make the netif_napi_del() explicit\nas it is on the .probe() path.", "A flaw was found in the Linux kernel's dpaa2-switch network driver. During device removal, network packet polling instances (NAPI) shared across switch ports can be deleted before they are properly disabled. A local user with administrative privileges could trigger this issue during device teardown, potentially leading to kernel instability and a denial of service (system crash)."], "name": "CVE-2026-97434", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-97434\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-97434\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97434.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,569df157eb874cb3b50554d73b89f31599397b42)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,6518f87771c8833e587bd9881346fa759651c2ae)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,e23d7c8c1d4ba435c457d7ffb2669175ec819b07)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.12.111)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.18.53)"}}], "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": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.111,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.53,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2,*]"}}], "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": "2026-09-24T22:15:16.912319+00:00", "updated": "2026-10-01T15:30:08.632087+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}