CVE-2026-74613

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74613", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.920Z", "datePublished": "2026-08-22T15:31:59.062Z", "dateUpdated": "2026-10-16T19:06:01.547Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-25T05:40:39.724Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvsock/virtio: avoid refilling the RX queue after teardown\n\nCommit b917507e5ad9 (\"vsock/virtio: stop workers during the .remove()\")\nmade the RX worker jump to its common exit when rx_run is clear. That\nexit still refills the RX queue when the buffer count is low, so work\nqueued across virtio_vsock_vqs_del() can add buffers after the virtqueues\nhave been deleted.\n\nBUG: KASAN: slab-use-after-free in virtqueue_add_sgs\nRead of size 4 by task kworker/0:1\nWorkqueue: virtio_vsock virtio_transport_rx_work\nCall Trace:\n virtqueue_add_sgs (drivers/virtio/virtio_ring.c:2796)\n virtio_vsock_rx_fill (net/vmw_vsock/virtio_transport.c:332)\n virtio_transport_rx_work (net/vmw_vsock/virtio_transport.c:701)\n process_one_work (kernel/workqueue.c:3314)\n worker_thread (kernel/workqueue.c:3478)\n kthread (kernel/kthread.c:436)\n ret_from_fork (arch/x86/kernel/process.c:158)\n ret_from_fork_asm (arch/x86/entry/entry_64.S:245)\n...\nFreed by task 141:\n kfree (mm/slub.c:6566)\n vp_del_vq (drivers/virtio/virtio_pci_common.c:259)\n vp_del_vqs (drivers/virtio/virtio_pci_common.c:285)\n virtio_vsock_freeze (net/vmw_vsock/virtio_transport.c:912)\n virtio_device_freeze (drivers/virtio/virtio.c:658)\n virtio_pci_freeze (drivers/virtio/virtio_pci_common.c:601)\n pci_pm_freeze (drivers/pci/pci-driver.c:1098)\n device_suspend (drivers/base/power/main.c:1968)\nKernel panic - not syncing: KASAN: panic_on_warn set ...\n\nJump to a no-refill exit when rx_run is clear, leaving the normal exit\nto replenish a running queue."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The bug is in the virtio-vsock guest driver reached via AF_VSOCK sockets and virtio virtqueue callbacks, not via remote network packets; kernel guidance classifies vsock as Local attack vector.\nAC:L - An attacker can reliably queue virtio_transport_rx_work by maintaining active vsock traffic while virtqueues are torn down; this slab UAF race is attacker-influenced and does not depend on uncontrollable memory layout.\nPR:L - Triggering the vulnerable RX refill path requires only normal unprivileged AF_VSOCK use to drive virtio RX work; teardown can coincide with host-driven suspend, migration, or device removal without guest root.\nUI:N - Exploitation requires no victim interaction beyond the attacker opening and using vsock sockets to generate virtio RX work during device teardown.\nS:U - The use-after-free corrupts guest-kernel virtio state and can panic the guest kernel; it does not directly cross a VM/host security boundary or enable guest-to-host escape.\nC:H - KASAN reports a slab use-after-free read in virtqueue_add_sgs on freed virtqueue metadata; UAF of kernel heap objects can be leveraged for arbitrary kernel memory disclosure.\nI:H - Use-after-free of virtqueue structures during virtio_vsock_rx_fill enables heap corruption and can be developed into arbitrary kernel writes or control-flow hijack, not merely a benign read.\nA:H - The reported reproducer triggers KASAN slab-use-after-free and kernel panic during virtio_vsock freeze/teardown; UAF in kernel workqueue context causes high availability impact."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/vmw_vsock/virtio_transport.c"], "versions": [{"version": "b917507e5ad983085d29069369778b16aa03a0a8", "lessThan": "a7658508f5fe8f1077a65e8cb9535d3426f37a2f", "status": "affected", "versionType": "git"}, {"version": "b917507e5ad983085d29069369778b16aa03a0a8", "lessThan": "1aa21e7c8702a7c37cd7d3cace1a652cfa5e8171", "status": "affected", "versionType": "git"}, {"version": "b917507e5ad983085d29069369778b16aa03a0a8", "lessThan": "4d37e3525cc346a1421c1bdeaad5848e249fc60c", "status": "affected", "versionType": "git"}, {"version": "b917507e5ad983085d29069369778b16aa03a0a8", "lessThan": "9d80a04129a6c27a690cb69de3fe3f50be5aa8b9", "status": "affected", "versionType": "git"}, {"version": "b917507e5ad983085d29069369778b16aa03a0a8", "lessThan": "a309b74e3fc052352ab778500449cb9c3853c363", "status": "affected", "versionType": "git"}, {"version": "b917507e5ad983085d29069369778b16aa03a0a8", "lessThan": "38c7763fdc533edb34dc8f4489c260e8ba2ccae9", "status": "affected", "versionType": "git"}, {"version": "b917507e5ad983085d29069369778b16aa03a0a8", "lessThan": "e82a5faea2e3886dfb2a65ce092a132e7e896915", "status": "affected", "versionType": "git"}, {"version": "b917507e5ad983085d29069369778b16aa03a0a8", "lessThan": "a31e0ad444698d8aa7534a0f89fda543730f97a5", "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/vmw_vsock/virtio_transport.c"], "versions": [{"version": "5.3", "status": "affected"}, {"version": "0", "lessThan": "5.3", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.265", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.216", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.183", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.152", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.104", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.45", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.9", "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": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "5.10.265"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "5.15.216"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.1.183"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.6.152"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.12.104"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.18.45"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "7.1.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/a7658508f5fe8f1077a65e8cb9535d3426f37a2f"}, {"url": "https://git.kernel.org/stable/c/1aa21e7c8702a7c37cd7d3cace1a652cfa5e8171"}, {"url": "https://git.kernel.org/stable/c/4d37e3525cc346a1421c1bdeaad5848e249fc60c"}, {"url": "https://git.kernel.org/stable/c/9d80a04129a6c27a690cb69de3fe3f50be5aa8b9"}, {"url": "https://git.kernel.org/stable/c/a309b74e3fc052352ab778500449cb9c3853c363"}, {"url": "https://git.kernel.org/stable/c/38c7763fdc533edb34dc8f4489c260e8ba2ccae9"}, {"url": "https://git.kernel.org/stable/c/e82a5faea2e3886dfb2a65ce092a132e7e896915"}, {"url": "https://git.kernel.org/stable/c/a31e0ad444698d8aa7534a0f89fda543730f97a5"}], "title": "vsock/virtio: avoid refilling the RX queue after teardown", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-74613", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T19:02:24.893418Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T19:06:01.547Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-74613", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T19:02:24.893418Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T19:02:25.456Z"}}], "cna": {"title": "vsock/virtio: avoid refilling the RX queue after teardown", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 7.8, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}, "scenarios": [{"lang": "en", "value": "AV:L - The bug is in the virtio-vsock guest driver reached via AF_VSOCK sockets and virtio virtqueue callbacks, not via remote network packets; kernel guidance classifies vsock as Local attack vector.\nAC:L - An attacker can reliably queue virtio_transport_rx_work by maintaining active vsock traffic while virtqueues are torn down; this slab UAF race is attacker-influenced and does not depend on uncontrollable memory layout.\nPR:L - Triggering the vulnerable RX refill path requires only normal unprivileged AF_VSOCK use to drive virtio RX work; teardown can coincide with host-driven suspend, migration, or device removal without guest root.\nUI:N - Exploitation requires no victim interaction beyond the attacker opening and using vsock sockets to generate virtio RX work during device teardown.\nS:U - The use-after-free corrupts guest-kernel virtio state and can panic the guest kernel; it does not directly cross a VM/host security boundary or enable guest-to-host escape.\nC:H - KASAN reports a slab use-after-free read in virtqueue_add_sgs on freed virtqueue metadata; UAF of kernel heap objects can be leveraged for arbitrary kernel memory disclosure.\nI:H - Use-after-free of virtqueue structures during virtio_vsock_rx_fill enables heap corruption and can be developed into arbitrary kernel writes or control-flow hijack, not merely a benign read.\nA:H - The reported reproducer triggers KASAN slab-use-after-free and kernel panic during virtio_vsock freeze/teardown; UAF in kernel workqueue context causes high availability impact."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "b917507e5ad983085d29069369778b16aa03a0a8", "lessThan": "a7658508f5fe8f1077a65e8cb9535d3426f37a2f", "versionType": "git"}, {"status": "affected", "version": "b917507e5ad983085d29069369778b16aa03a0a8", "lessThan": "1aa21e7c8702a7c37cd7d3cace1a652cfa5e8171", "versionType": "git"}, {"status": "affected", "version": "b917507e5ad983085d29069369778b16aa03a0a8", "lessThan": "4d37e3525cc346a1421c1bdeaad5848e249fc60c", "versionType": "git"}, {"status": "affected", "version": "b917507e5ad983085d29069369778b16aa03a0a8", "lessThan": "9d80a04129a6c27a690cb69de3fe3f50be5aa8b9", "versionType": "git"}, {"status": "affected", "version": "b917507e5ad983085d29069369778b16aa03a0a8", "lessThan": "a309b74e3fc052352ab778500449cb9c3853c363", "versionType": "git"}, {"status": "affected", "version": "b917507e5ad983085d29069369778b16aa03a0a8", "lessThan": "38c7763fdc533edb34dc8f4489c260e8ba2ccae9", "versionType": "git"}, {"status": "affected", "version": "b917507e5ad983085d29069369778b16aa03a0a8", "lessThan": "e82a5faea2e3886dfb2a65ce092a132e7e896915", "versionType": "git"}, {"status": "affected", "version": "b917507e5ad983085d29069369778b16aa03a0a8", "lessThan": "a31e0ad444698d8aa7534a0f89fda543730f97a5", "versionType": "git"}], "programFiles": ["net/vmw_vsock/virtio_transport.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.3"}, {"status": "unaffected", "version": "0", "lessThan": "5.3", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.265", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.216", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.183", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.152", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.104", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.45", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.9", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/vmw_vsock/virtio_transport.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/a7658508f5fe8f1077a65e8cb9535d3426f37a2f"}, {"url": "https://git.kernel.org/stable/c/1aa21e7c8702a7c37cd7d3cace1a652cfa5e8171"}, {"url": "https://git.kernel.org/stable/c/4d37e3525cc346a1421c1bdeaad5848e249fc60c"}, {"url": "https://git.kernel.org/stable/c/9d80a04129a6c27a690cb69de3fe3f50be5aa8b9"}, {"url": "https://git.kernel.org/stable/c/a309b74e3fc052352ab778500449cb9c3853c363"}, {"url": "https://git.kernel.org/stable/c/38c7763fdc533edb34dc8f4489c260e8ba2ccae9"}, {"url": "https://git.kernel.org/stable/c/e82a5faea2e3886dfb2a65ce092a132e7e896915"}, {"url": "https://git.kernel.org/stable/c/a31e0ad444698d8aa7534a0f89fda543730f97a5"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvsock/virtio: avoid refilling the RX queue after teardown\n\nCommit b917507e5ad9 (\"vsock/virtio: stop workers during the .remove()\")\nmade the RX worker jump to its common exit when rx_run is clear. That\nexit still refills the RX queue when the buffer count is low, so work\nqueued across virtio_vsock_vqs_del() can add buffers after the virtqueues\nhave been deleted.\n\nBUG: KASAN: slab-use-after-free in virtqueue_add_sgs\nRead of size 4 by task kworker/0:1\nWorkqueue: virtio_vsock virtio_transport_rx_work\nCall Trace:\n virtqueue_add_sgs (drivers/virtio/virtio_ring.c:2796)\n virtio_vsock_rx_fill (net/vmw_vsock/virtio_transport.c:332)\n virtio_transport_rx_work (net/vmw_vsock/virtio_transport.c:701)\n process_one_work (kernel/workqueue.c:3314)\n worker_thread (kernel/workqueue.c:3478)\n kthread (kernel/kthread.c:436)\n ret_from_fork (arch/x86/kernel/process.c:158)\n ret_from_fork_asm (arch/x86/entry/entry_64.S:245)\n...\nFreed by task 141:\n kfree (mm/slub.c:6566)\n vp_del_vq (drivers/virtio/virtio_pci_common.c:259)\n vp_del_vqs (drivers/virtio/virtio_pci_common.c:285)\n virtio_vsock_freeze (net/vmw_vsock/virtio_transport.c:912)\n virtio_device_freeze (drivers/virtio/virtio.c:658)\n virtio_pci_freeze (drivers/virtio/virtio_pci_common.c:601)\n pci_pm_freeze (drivers/pci/pci-driver.c:1098)\n device_suspend (drivers/base/power/main.c:1968)\nKernel panic - not syncing: KASAN: panic_on_warn set ...\n\nJump to a no-refill exit when rx_run is clear, leaving the normal exit\nto replenish a running queue."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.265", "versionStartIncluding": "5.3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.216", "versionStartIncluding": "5.3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.183", "versionStartIncluding": "5.3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.152", "versionStartIncluding": "5.3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.104", "versionStartIncluding": "5.3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.45", "versionStartIncluding": "5.3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.9", "versionStartIncluding": "5.3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "5.3"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-25T05:40:39.724Z"}}}, "cveMetadata": {"cveId": "CVE-2026-74613", "state": "PUBLISHED", "dateUpdated": "2026-10-16T19:06:01.547Z", "dateReserved": "2026-08-15T05:44:03.920Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-08-22T15:31:59.062Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/vmw_vsock/virtio_transport.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "a7658508f5fe8f1077a65e8cb9535d3426f37a2f", "status": "affected", "version": "b917507e5ad983085d29069369778b16aa03a0a8", "versionType": "git"}, {"lessThan": "1aa21e7c8702a7c37cd7d3cace1a652cfa5e8171", "status": "affected", "version": "b917507e5ad983085d29069369778b16aa03a0a8", "versionType": "git"}, {"lessThan": "4d37e3525cc346a1421c1bdeaad5848e249fc60c", "status": "affected", "version": "b917507e5ad983085d29069369778b16aa03a0a8", "versionType": "git"}, {"lessThan": "9d80a04129a6c27a690cb69de3fe3f50be5aa8b9", "status": "affected", "version": "b917507e5ad983085d29069369778b16aa03a0a8", "versionType": "git"}, {"lessThan": "a309b74e3fc052352ab778500449cb9c3853c363", "status": "affected", "version": "b917507e5ad983085d29069369778b16aa03a0a8", "versionType": "git"}, {"lessThan": "38c7763fdc533edb34dc8f4489c260e8ba2ccae9", "status": "affected", "version": "b917507e5ad983085d29069369778b16aa03a0a8", "versionType": "git"}, {"lessThan": "e82a5faea2e3886dfb2a65ce092a132e7e896915", "status": "affected", "version": "b917507e5ad983085d29069369778b16aa03a0a8", "versionType": "git"}, {"lessThan": "a31e0ad444698d8aa7534a0f89fda543730f97a5", "status": "affected", "version": "b917507e5ad983085d29069369778b16aa03a0a8", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/vmw_vsock/virtio_transport.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.3"}, {"lessThan": "5.3", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.265", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.216", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.183", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.152", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.104", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.45", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.9", "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\nvsock/virtio: avoid refilling the RX queue after teardown\n\nCommit b917507e5ad9 (\"vsock/virtio: stop workers during the .remove()\")\nmade the RX worker jump to its common exit when rx_run is clear. That\nexit still refills the RX queue when the buffer count is low, so work\nqueued across virtio_vsock_vqs_del() can add buffers after the virtqueues\nhave been deleted.\n\nBUG: KASAN: slab-use-after-free in virtqueue_add_sgs\nRead of size 4 by task kworker/0:1\nWorkqueue: virtio_vsock virtio_transport_rx_work\nCall Trace:\n virtqueue_add_sgs (drivers/virtio/virtio_ring.c:2796)\n virtio_vsock_rx_fill (net/vmw_vsock/virtio_transport.c:332)\n virtio_transport_rx_work (net/vmw_vsock/virtio_transport.c:701)\n process_one_work (kernel/workqueue.c:3314)\n worker_thread (kernel/workqueue.c:3478)\n kthread (kernel/kthread.c:436)\n ret_from_fork (arch/x86/kernel/process.c:158)\n ret_from_fork_asm (arch/x86/entry/entry_64.S:245)\n...\nFreed by task 141:\n kfree (mm/slub.c:6566)\n vp_del_vq (drivers/virtio/virtio_pci_common.c:259)\n vp_del_vqs (drivers/virtio/virtio_pci_common.c:285)\n virtio_vsock_freeze (net/vmw_vsock/virtio_transport.c:912)\n virtio_device_freeze (drivers/virtio/virtio.c:658)\n virtio_pci_freeze (drivers/virtio/virtio_pci_common.c:601)\n pci_pm_freeze (drivers/pci/pci-driver.c:1098)\n device_suspend (drivers/base/power/main.c:1968)\nKernel panic - not syncing: KASAN: panic_on_warn set ...\n\nJump to a no-refill exit when rx_run is clear, leaving the normal exit\nto replenish a running queue."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nvsock/virtio: evitar rellenar la cola RX despu\u00e9s del desmontaje\n\nEl commit b917507e5ad9 ('vsock/virtio: detener los workers durante el .remove()') hizo que el worker RX saltara a su salida com\u00fan cuando rx_run est\u00e1 despejado. Esa salida todav\u00eda rellena la cola RX cuando el recuento de b\u00faferes es bajo, por lo que el trabajo en cola a trav\u00e9s de virtio_vsock_vqs_del() puede a\u00f1adir b\u00faferes despu\u00e9s de que las virtqueues hayan sido eliminadas.\n\nBUG: KASAN: uso despu\u00e9s de liberaci\u00f3n de slab en virtqueue_add_sgs\nLectura de tama\u00f1o 4 por la tarea kworker/0:1\nCola de trabajo: virtio_vsock virtio_transport_rx_work\nRastro de Llamada:\n virtqueue_add_sgs (drivers/virtio/virtio_ring.c:2796)\n virtio_vsock_rx_fill (net/vmw_vsock/virtio_transport.c:332)\n virtio_transport_rx_work (net/vmw_vsock/virtio_transport.c:701)\n process_one_work (kernel/workqueue.c:3314)\n worker_thread (kernel/workqueue.c:3478)\n kthread (kernel/kthread.c:436)\n ret_from_fork (arch/x86/kernel/process.c:158)\n ret_from_fork_asm (arch/x86/entry/entry_64.S:245)\n...\nLiberado por la tarea 141:\n kfree (mm/slub.c:6566)\n vp_del_vq (drivers/virtio/virtio_pci_common.c:259)\n vp_del_vqs (drivers/virtio/virtio_pci_common.c:285)\n virtio_vsock_freeze (net/vmw_vsock/virtio_transport.c:912)\n virtio_device_freeze (drivers/virtio/virtio.c:658)\n virtio_pci_freeze (drivers/virtio/virtio_pci_common.c:601)\n pci_pm_freeze (drivers/pci/pci-driver.c:1098)\n device_suspend (drivers/base/power/main.c:1968)\nP\u00e1nico del kernel - no sincronizando: KASAN: panic_on_warn establecido ...\n\nSaltar a una salida sin recarga cuando rx_run est\u00e1 despejado, dejando la salida normal para reponer una cola en ejecuci\u00f3n."}], "id": "CVE-2026-74613", "lastModified": "2026-10-16T20:17:46.517", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-74613", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T19:02:24.893418Z", "version": "2.0.3"}}]}, "published": "2026-08-22T16:16:33.890", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1aa21e7c8702a7c37cd7d3cace1a652cfa5e8171"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/38c7763fdc533edb34dc8f4489c260e8ba2ccae9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4d37e3525cc346a1421c1bdeaad5848e249fc60c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9d80a04129a6c27a690cb69de3fe3f50be5aa8b9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a309b74e3fc052352ab778500449cb9c3853c363"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a31e0ad444698d8aa7534a0f89fda543730f97a5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a7658508f5fe8f1077a65e8cb9535d3426f37a2f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e82a5faea2e3886dfb2a65ce092a132e7e896915"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: vsock/virtio: avoid refilling the RX queue after teardown", "id": "2521484", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2521484"}, "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-825", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nvsock/virtio: avoid refilling the RX queue after teardown\nCommit b917507e5ad9 (\"vsock/virtio: stop workers during the .remove()\")\nmade the RX worker jump to its common exit when rx_run is clear. That\nexit still refills the RX queue when the buffer count is low, so work\nqueued across virtio_vsock_vqs_del() can add buffers after the virtqueues\nhave been deleted.\nBUG: KASAN: slab-use-after-free in virtqueue_add_sgs\nRead of size 4 by task kworker/0:1\nWorkqueue: virtio_vsock virtio_transport_rx_work\nCall Trace:\nvirtqueue_add_sgs (drivers/virtio/virtio_ring.c:2796)\nvirtio_vsock_rx_fill (net/vmw_vsock/virtio_transport.c:332)\nvirtio_transport_rx_work (net/vmw_vsock/virtio_transport.c:701)\nprocess_one_work (kernel/workqueue.c:3314)\nworker_thread (kernel/workqueue.c:3478)\nkthread (kernel/kthread.c:436)\nret_from_fork (arch/x86/kernel/process.c:158)\nret_from_fork_asm (arch/x86/entry/entry_64.S:245)\n...\nFreed by task 141:\nkfree (mm/slub.c:6566)\nvp_del_vq (drivers/virtio/virtio_pci_common.c:259)\nvp_del_vqs (drivers/virtio/virtio_pci_common.c:285)\nvirtio_vsock_freeze (net/vmw_vsock/virtio_transport.c:912)\nvirtio_device_freeze (drivers/virtio/virtio.c:658)\nvirtio_pci_freeze (drivers/virtio/virtio_pci_common.c:601)\npci_pm_freeze (drivers/pci/pci-driver.c:1098)\ndevice_suspend (drivers/base/power/main.c:1968)\nKernel panic - not syncing: KASAN: panic_on_warn set ...\nJump to a no-refill exit when rx_run is clear, leaving the normal exit\nto replenish a running queue.", "A flaw was found in the Linux kernel's vsock/virtio component. A race condition during the teardown of the receive (RX) queue can allow work to add buffers after the virtual queues (virtqueues) have been deleted. This can lead to a use-after-free vulnerability, which may result in a kernel panic and a denial of service (DoS) to the system."], "name": "CVE-2026-74613", "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"}], "public_date": "2026-08-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-74613\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74613\nhttps://lore.kernel.org/linux-cve-announce/2026082217-CVE-2026-74613-3b63@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b917507e5ad983085d29069369778b16aa03a0a8,a7658508f5fe8f1077a65e8cb9535d3426f37a2f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b917507e5ad983085d29069369778b16aa03a0a8,1aa21e7c8702a7c37cd7d3cace1a652cfa5e8171)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b917507e5ad983085d29069369778b16aa03a0a8,4d37e3525cc346a1421c1bdeaad5848e249fc60c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b917507e5ad983085d29069369778b16aa03a0a8,9d80a04129a6c27a690cb69de3fe3f50be5aa8b9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b917507e5ad983085d29069369778b16aa03a0a8,a309b74e3fc052352ab778500449cb9c3853c363)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b917507e5ad983085d29069369778b16aa03a0a8,38c7763fdc533edb34dc8f4489c260e8ba2ccae9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b917507e5ad983085d29069369778b16aa03a0a8,e82a5faea2e3886dfb2a65ce092a132e7e896915)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b917507e5ad983085d29069369778b16aa03a0a8,a31e0ad444698d8aa7534a0f89fda543730f97a5)"}}], "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": "5.3"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.3)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.265,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.216,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.183,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.152,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.104,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.45,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.9,7.2.0)"}}, {"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": "2026-08-22T17:00:10.932278+00:00", "updated": "2026-08-25T16:15:05.600598+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}