CVE-2026-64545

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64545", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.795Z", "datePublished": "2026-07-27T20:10:36.659Z", "dateUpdated": "2026-11-10T12:49:29.619Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T04:57:22.161Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet, bpf: check master for NULL in xdp_master_redirect()\n\nxdp_master_redirect() dereferences the result of\nnetdev_master_upper_dev_get_rcu() without a NULL check, but that helper\nreturns NULL when the receiving device has no upper-master adjacency.\n\nThe reach guard only checks netif_is_bond_slave(). On bond slave release\nbond_upper_dev_unlink() drops the upper-master adjacency before clearing\nIFF_SLAVE, so an XDP_TX reaching xdp_master_redirect() in that window\nstill passes netif_is_bond_slave() while master is already NULL, and\nfaults on master->flags at offset 0xb0:\n\n BUG: kernel NULL pointer dereference, address: 00000000000000b0\n RIP: 0010:xdp_master_redirect (net/core/filter.c:4432)\n Call Trace:\n xdp_master_redirect (net/core/filter.c:4432)\n bpf_prog_run_generic_xdp (include/net/xdp.h:700)\n do_xdp_generic (net/core/dev.c:5608)\n __netif_receive_skb_one_core (net/core/dev.c:6204)\n process_backlog (net/core/dev.c:6319)\n __napi_poll (net/core/dev.c:7729)\n net_rx_action (net/core/dev.c:7792)\n handle_softirqs (kernel/softirq.c:622)\n __dev_queue_xmit (include/linux/bottom_half.h:33)\n packet_sendmsg (net/packet/af_packet.c:3082)\n __sys_sendto (net/socket.c:2252)\n Kernel panic - not syncing: Fatal exception in interrupt\n\nThe missing check dates back to the original code; commit 1921f91298d1\n(\"net, bpf: fix null-ptr-deref in xdp_master_redirect() for down master\")\nlater added the master->flags read where the fault now lands but kept the\nunconditional deref. Check master for NULL before use; a NULL master is\ntreated the same as one that is not up."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:N - The faulting path is the XDP receive hook \u2014 packets arriving on a bond slave drive `bpf_prog_run_xdp`/`do_xdp_generic` \u2192 `xdp_master_redirect()`, so a remote attacker sending traffic to a bonded interface running an XDP_TX program (XDP load balancers/DDoS scrubbers on bonded uplinks are a mainstream deployment) supplies the triggering packets with no local access.\nAC:L - The attacker controls the packet side of the race and can sustain line-rate traffic so the multi-microsecond window between adjacency teardown and `IFF_SLAVE` clearing is hit essentially deterministically; where the attacker also holds the network configuration side (container/netns with bond and XDP control) both sides of the race are attacker-driven, which the kernel guidance classes as Low.\nPR:N - No credentials or authentication are needed to send frames to a bonded interface, and the fault occurs in softirq during receive processing before any socket, filesystem, or user-level authorization is consulted \u2014 matching the PR:N treatment of the sibling fix CVE-2026-53069 in this same function.\nUI:N - No victim action is required; the slave-release window is reached by routine and externally-induced events (bond reconfiguration, `bond_enslave` rollback, NIC hotplug/`NETDEV_UNREGISTER`), and the attacker need only keep traffic flowing.\nS:U - The NULL dereference and its consequences are confined to the kernel's own security authority; no hypervisor, IOMMU, or sandbox boundary is crossed.\nC:N - The bug is a read of `master->flags` at fixed offset 0xb0 from a NULL pointer, which faults immediately; no memory contents are returned to the attacker and no kernel addresses are disclosed.\nI:N - There is no write primitive \u2014 the defect is a read-side dereference that faults before `master->netdev_ops->ndo_xdp_get_xmit_slave()` is reached, so no kernel data or control flow is modified.\nA:H - The dereference happens in softirq/interrupt context, producing \"Kernel panic - not syncing: Fatal exception in interrupt\" \u2014 a complete system crash rather than a recoverable oops, and it can be re-triggered on every reboot as long as traffic and bond reconfiguration continue."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/core/filter.c"], "versions": [{"version": "879af96ffd72706c6e3278ea6b45b0b0e37ec5d7", "lessThan": "c99ca049e910d61ddbd28cc2c47242f2bfbb4970", "status": "affected", "versionType": "git"}, {"version": "879af96ffd72706c6e3278ea6b45b0b0e37ec5d7", "lessThan": "e2a56441233131fe18a76001de347ecda217e40c", "status": "affected", "versionType": "git"}, {"version": "879af96ffd72706c6e3278ea6b45b0b0e37ec5d7", "lessThan": "3876318ea54e83eb70982b8280a3c5e4e32269bf", "status": "affected", "versionType": "git"}, {"version": "879af96ffd72706c6e3278ea6b45b0b0e37ec5d7", "lessThan": "4edbcacca09f92b85d3951b6add11894b20a84bc", "status": "affected", "versionType": "git"}, {"version": "879af96ffd72706c6e3278ea6b45b0b0e37ec5d7", "lessThan": "03b743586a2469744e96e9c1015096d07240935d", "status": "affected", "versionType": "git"}, {"version": "879af96ffd72706c6e3278ea6b45b0b0e37ec5d7", "lessThan": "89c103d702b25ceb2d097faf854deb47b53b17ff", "status": "affected", "versionType": "git"}, {"version": "879af96ffd72706c6e3278ea6b45b0b0e37ec5d7", "lessThan": "e82d8cc4321c373dc46e741cd2dfdaa7921fddb7", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/core/filter.c"], "versions": [{"version": "5.15", "status": "affected"}, {"version": "0", "lessThan": "5.15", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "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": 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where the attacker also holds the network configuration side (container/netns with bond and XDP control) both sides of the race are attacker-driven, which the kernel guidance classes as Low.\nPR:N - No credentials or authentication are needed to send frames to a bonded interface, and the fault occurs in softirq during receive processing before any socket, filesystem, or user-level authorization is consulted \u2014 matching the PR:N treatment of the sibling fix CVE-2026-53069 in this same function.\nUI:N - No victim action is required; the slave-release window is reached by routine and externally-induced events (bond reconfiguration, `bond_enslave` rollback, NIC hotplug/`NETDEV_UNREGISTER`), and the attacker need only keep traffic flowing.\nS:U - The NULL dereference and its consequences are confined to the kernel's own security authority; no hypervisor, IOMMU, or sandbox boundary is crossed.\nC:N - The bug is a read of `master->flags` at fixed offset 0xb0 from a NULL pointer, which faults immediately; no memory contents are returned to the attacker and no kernel addresses are disclosed.\nI:N - There is no write primitive \u2014 the defect is a read-side dereference that faults before `master->netdev_ops->ndo_xdp_get_xmit_slave()` is reached, so no kernel data or control flow is modified.\nA:H - The dereference happens in softirq/interrupt context, producing \"Kernel panic - not syncing: Fatal exception in interrupt\" \u2014 a complete system crash rather than a recoverable oops, and it can be re-triggered on every reboot as long as traffic and bond reconfiguration continue."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "879af96ffd72706c6e3278ea6b45b0b0e37ec5d7", "lessThan": "c99ca049e910d61ddbd28cc2c47242f2bfbb4970", "versionType": "git"}, {"status": "affected", "version": "879af96ffd72706c6e3278ea6b45b0b0e37ec5d7", "lessThan": "e2a56441233131fe18a76001de347ecda217e40c", "versionType": "git"}, {"status": "affected", "version": "879af96ffd72706c6e3278ea6b45b0b0e37ec5d7", "lessThan": "3876318ea54e83eb70982b8280a3c5e4e32269bf", "versionType": "git"}, {"status": "affected", "version": "879af96ffd72706c6e3278ea6b45b0b0e37ec5d7", "lessThan": "4edbcacca09f92b85d3951b6add11894b20a84bc", "versionType": "git"}, {"status": "affected", "version": "879af96ffd72706c6e3278ea6b45b0b0e37ec5d7", "lessThan": "03b743586a2469744e96e9c1015096d07240935d", "versionType": "git"}, {"status": "affected", "version": "879af96ffd72706c6e3278ea6b45b0b0e37ec5d7", "lessThan": "89c103d702b25ceb2d097faf854deb47b53b17ff", "versionType": "git"}, {"status": "affected", "version": "879af96ffd72706c6e3278ea6b45b0b0e37ec5d7", "lessThan": "e82d8cc4321c373dc46e741cd2dfdaa7921fddb7", "versionType": "git"}], "programFiles": ["net/core/filter.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.15"}, {"status": "unaffected", "version": "0", "lessThan": "5.15", "versionType": "semver"}, {"status": "unaffected", "version": "5.15.212", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.178", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.145", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.97", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.40", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.5", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/core/filter.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/c99ca049e910d61ddbd28cc2c47242f2bfbb4970"}, {"url": "https://git.kernel.org/stable/c/e2a56441233131fe18a76001de347ecda217e40c"}, {"url": "https://git.kernel.org/stable/c/3876318ea54e83eb70982b8280a3c5e4e32269bf"}, {"url": "https://git.kernel.org/stable/c/4edbcacca09f92b85d3951b6add11894b20a84bc"}, {"url": "https://git.kernel.org/stable/c/03b743586a2469744e96e9c1015096d07240935d"}, {"url": "https://git.kernel.org/stable/c/89c103d702b25ceb2d097faf854deb47b53b17ff"}, {"url": "https://git.kernel.org/stable/c/e82d8cc4321c373dc46e741cd2dfdaa7921fddb7"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet, bpf: check master for NULL in xdp_master_redirect()\n\nxdp_master_redirect() dereferences the result of\nnetdev_master_upper_dev_get_rcu() without a NULL check, but that helper\nreturns NULL when the receiving device has no upper-master adjacency.\n\nThe reach guard only checks netif_is_bond_slave(). On bond slave release\nbond_upper_dev_unlink() drops the upper-master adjacency before clearing\nIFF_SLAVE, so an XDP_TX reaching xdp_master_redirect() in that window\nstill passes netif_is_bond_slave() while master is already NULL, and\nfaults on master->flags at offset 0xb0:\n\n BUG: kernel NULL pointer dereference, address: 00000000000000b0\n RIP: 0010:xdp_master_redirect (net/core/filter.c:4432)\n Call Trace:\n xdp_master_redirect (net/core/filter.c:4432)\n bpf_prog_run_generic_xdp (include/net/xdp.h:700)\n do_xdp_generic (net/core/dev.c:5608)\n __netif_receive_skb_one_core (net/core/dev.c:6204)\n process_backlog (net/core/dev.c:6319)\n __napi_poll (net/core/dev.c:7729)\n net_rx_action (net/core/dev.c:7792)\n handle_softirqs (kernel/softirq.c:622)\n __dev_queue_xmit (include/linux/bottom_half.h:33)\n packet_sendmsg (net/packet/af_packet.c:3082)\n __sys_sendto (net/socket.c:2252)\n Kernel panic - not syncing: Fatal exception in interrupt\n\nThe missing check dates back to the original code; commit 1921f91298d1\n(\"net, bpf: fix null-ptr-deref in xdp_master_redirect() for down master\")\nlater added the master->flags read where the fault now lands but kept the\nunconditional deref. Check master for NULL before use; a NULL master is\ntreated the same as one that is not up."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.212", "versionStartIncluding": "5.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.178", "versionStartIncluding": "5.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.145", "versionStartIncluding": "5.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.97", "versionStartIncluding": "5.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.40", "versionStartIncluding": "5.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.5", "versionStartIncluding": "5.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "5.15"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T04:57:22.161Z"}}}, "cveMetadata": {"cveId": "CVE-2026-64545", "state": "PUBLISHED", "dateUpdated": "2026-11-10T12:49:29.619Z", "dateReserved": "2026-07-19T15:36:31.795Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-07-27T20:10:36.659Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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"5.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "092233C7-F4E0-40C8-BD4D-A28FE50DFE20", "versionEndExcluding": "6.1.178", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "7046B092-F810-4440-ACE6-60218518EECE", "versionEndExcluding": "6.6.145", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "05880CF6-5AD2-44E9-853A-6CE8318E76A5", "versionEndExcluding": "6.12.97", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "67D87928-1419-4529-9201-42C059678CB4", "versionEndExcluding": "6.18.40", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FE149C35-43CC-473B-86E3-978E6A9CBC55", "versionEndExcluding": "7.1.5", "versionStartIncluding": "6.19", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet, bpf: check master for NULL in xdp_master_redirect()\n\nxdp_master_redirect() dereferences the result of\nnetdev_master_upper_dev_get_rcu() without a NULL check, but that helper\nreturns NULL when the receiving device has no upper-master adjacency.\n\nThe reach guard only checks netif_is_bond_slave(). On bond slave release\nbond_upper_dev_unlink() drops the upper-master adjacency before clearing\nIFF_SLAVE, so an XDP_TX reaching xdp_master_redirect() in that window\nstill passes netif_is_bond_slave() while master is already NULL, and\nfaults on master->flags at offset 0xb0:\n\n BUG: kernel NULL pointer dereference, address: 00000000000000b0\n RIP: 0010:xdp_master_redirect (net/core/filter.c:4432)\n Call Trace:\n xdp_master_redirect (net/core/filter.c:4432)\n bpf_prog_run_generic_xdp (include/net/xdp.h:700)\n do_xdp_generic (net/core/dev.c:5608)\n __netif_receive_skb_one_core (net/core/dev.c:6204)\n process_backlog (net/core/dev.c:6319)\n __napi_poll (net/core/dev.c:7729)\n net_rx_action (net/core/dev.c:7792)\n handle_softirqs (kernel/softirq.c:622)\n __dev_queue_xmit (include/linux/bottom_half.h:33)\n packet_sendmsg (net/packet/af_packet.c:3082)\n __sys_sendto (net/socket.c:2252)\n Kernel panic - not syncing: Fatal exception in interrupt\n\nThe missing check dates back to the original code; commit 1921f91298d1\n(\"net, bpf: fix null-ptr-deref in xdp_master_redirect() for down master\")\nlater added the master->flags read where the fault now lands but kept the\nunconditional deref. Check master for NULL before use; a NULL master is\ntreated the same as one that is not up."}], "id": "CVE-2026-64545", "lastModified": "2026-11-13T18:25:20.760", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-64545", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T15:42:14.941919Z", "version": "2.0.3"}}]}, "published": "2026-07-27T21:17:07.130", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/03b743586a2469744e96e9c1015096d07240935d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3876318ea54e83eb70982b8280a3c5e4e32269bf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4edbcacca09f92b85d3951b6add11894b20a84bc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/89c103d702b25ceb2d097faf854deb47b53b17ff"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c99ca049e910d61ddbd28cc2c47242f2bfbb4970"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e2a56441233131fe18a76001de347ecda217e40c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e82d8cc4321c373dc46e741cd2dfdaa7921fddb7"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "tags": ["Third Party Advisory"], "url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "tags": ["Third Party Advisory"], "url": "https://cert-portal.siemens.com/productcert/html/ssa-457936.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: net, bpf: check master for NULL in xdp_master_redirect()", "id": "2507787", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507787"}, "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-476", "details": ["A flaw was found in the Linux kernel. The `xdp_master_redirect()` function, which handles network packet redirection, does not properly check for a null pointer. This oversight allows a local attacker to trigger a null pointer dereference by sending a specially crafted XDP (eXpress Data Path) packet during a specific window when a network device's master adjacency is being dropped. Successful exploitation leads to a kernel panic, effectively causing a Denial of Service (DoS) on the affected system."], "name": "CVE-2026-64545", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "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": "Affected", "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"}], "public_date": "2026-07-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64545\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64545\nhttps://lore.kernel.org/linux-cve-announce/2026072736-CVE-2026-64545-25d6@gregkh/T"], "threat_severity": "Moderate"}

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