CVE-2026-98574

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98574", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.358Z", "datePublished": "2026-10-18T15:18:39.767Z", "dateUpdated": "2026-10-19T09:21:59.645Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:21:59.645Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bcmgenet: stop Tx NAPI before disabling the queues\n\nbcmgenet_netif_stop() and the Wake-on-LAN branch of bcmgenet_suspend()\nboth disable the Tx queues first and stop Tx NAPI several steps later. A\ncompletion in flight calls netif_tx_wake_queue() in between, and nothing\nstops the queue again, so a transmit can reach the rings after they have\nbeen freed.\n\nClose is safe because dev_deactivate_many() stops the qdisc first.\nbcmgenet_suspend() does not, so stop Tx NAPI before the queues on both\npaths.\n\nKASAN on a Raspberry Pi CM4, driven from an MTU change because suspend\nfreezes user space before the callback runs:\n\n BUG: KASAN: use-after-free in bcmgenet_xmit+0x17f8/0x2258\n Write of size 8 at addr ffffff8055844a68 by task ksoftirqd/0/14\n bcmgenet_xmit+0x17f8/0x2258\n dev_hard_start_xmit+0x13c/0x588\n sch_direct_xmit+0x108/0x340\n __dev_queue_xmit+0x1190/0x3848"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/broadcom/genet/bcmgenet.c"], "versions": [{"version": "254f3239dd070e469f45c3ca8b6ac38e47d6c730", "lessThan": "63bcc2fee6419963e45e7c2cd698fa862409601d", "status": "affected", "versionType": "git"}, {"version": "254f3239dd070e469f45c3ca8b6ac38e47d6c730", "lessThan": "f329d42423089904758f2685cda295de9bf99441", "status": "affected", "versionType": "git"}, {"version": "254f3239dd070e469f45c3ca8b6ac38e47d6c730", "lessThan": "7e87508b5c4d81210d0a736ed01962e52f5c4c56", "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/broadcom/genet/bcmgenet.c"], "versions": [{"version": "6.15", "status": "affected"}, {"version": "0", "lessThan": "6.15", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.55", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.9", "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": "6.15", "versionEndExcluding": "6.18.55"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "7.2.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/63bcc2fee6419963e45e7c2cd698fa862409601d"}, {"url": "https://git.kernel.org/stable/c/f329d42423089904758f2685cda295de9bf99441"}, {"url": "https://git.kernel.org/stable/c/7e87508b5c4d81210d0a736ed01962e52f5c4c56"}], "title": "net: bcmgenet: stop Tx NAPI before disabling the queues", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/ethernet/broadcom/genet/bcmgenet.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "63bcc2fee6419963e45e7c2cd698fa862409601d", "status": "affected", "version": "254f3239dd070e469f45c3ca8b6ac38e47d6c730", "versionType": "git"}, {"lessThan": "f329d42423089904758f2685cda295de9bf99441", "status": "affected", "version": "254f3239dd070e469f45c3ca8b6ac38e47d6c730", "versionType": "git"}, {"lessThan": "7e87508b5c4d81210d0a736ed01962e52f5c4c56", "status": "affected", "version": "254f3239dd070e469f45c3ca8b6ac38e47d6c730", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/ethernet/broadcom/genet/bcmgenet.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.15"}, {"lessThan": "6.15", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.55", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.9", "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: bcmgenet: stop Tx NAPI before disabling the queues\n\nbcmgenet_netif_stop() and the Wake-on-LAN branch of bcmgenet_suspend()\nboth disable the Tx queues first and stop Tx NAPI several steps later. A\ncompletion in flight calls netif_tx_wake_queue() in between, and nothing\nstops the queue again, so a transmit can reach the rings after they have\nbeen freed.\n\nClose is safe because dev_deactivate_many() stops the qdisc first.\nbcmgenet_suspend() does not, so stop Tx NAPI before the queues on both\npaths.\n\nKASAN on a Raspberry Pi CM4, driven from an MTU change because suspend\nfreezes user space before the callback runs:\n\n BUG: KASAN: use-after-free in bcmgenet_xmit+0x17f8/0x2258\n Write of size 8 at addr ffffff8055844a68 by task ksoftirqd/0/14\n bcmgenet_xmit+0x17f8/0x2258\n dev_hard_start_xmit+0x13c/0x588\n sch_direct_xmit+0x108/0x340\n __dev_queue_xmit+0x1190/0x3848"}], "id": "CVE-2026-98574", "lastModified": "2026-10-19T10:19:16.457", "metrics": {}, "published": "2026-10-18T16:17:09.703", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/63bcc2fee6419963e45e7c2cd698fa862409601d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7e87508b5c4d81210d0a736ed01962e52f5c4c56"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f329d42423089904758f2685cda295de9bf99441"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: net: bcmgenet: stop Tx NAPI before disabling the queues", "id": "2555034", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2555034"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/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:\nnet: bcmgenet: stop Tx NAPI before disabling the queues\nbcmgenet_netif_stop() and the Wake-on-LAN branch of bcmgenet_suspend()\nboth disable the Tx queues first and stop Tx NAPI several steps later. A\ncompletion in flight calls netif_tx_wake_queue() in between, and nothing\nstops the queue again, so a transmit can reach the rings after they have\nbeen freed.\nClose is safe because dev_deactivate_many() stops the qdisc first.\nbcmgenet_suspend() does not, so stop Tx NAPI before the queues on both\npaths.\nKASAN on a Raspberry Pi CM4, driven from an MTU change because suspend\nfreezes user space before the callback runs:\nBUG: KASAN: use-after-free in bcmgenet_xmit+0x17f8/0x2258\nWrite of size 8 at addr ffffff8055844a68 by task ksoftirqd/0/14\nbcmgenet_xmit+0x17f8/0x2258\ndev_hard_start_xmit+0x13c/0x588\nsch_direct_xmit+0x108/0x340\n__dev_queue_xmit+0x1190/0x3848", "A flaw was found in the Linux kernel's Broadcom GENET network driver. Improper synchronization between disabling transmission queues and stopping completion polling during interface shutdown or suspend operations can prematurely re-enable a queue. This race condition allows packet transmission to access freed memory buffers, causing a use-after-free condition. A local user could exploit this issue during device reconfiguration to trigger memory corruption, leading to a Denial of Service (DoS) via a system crash."], "name": "CVE-2026-98574", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "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": "2026-10-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98574\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98574\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98574.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[254f3239dd070e469f45c3ca8b6ac38e47d6c730,63bcc2fee6419963e45e7c2cd698fa862409601d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[254f3239dd070e469f45c3ca8b6ac38e47d6c730,f329d42423089904758f2685cda295de9bf99441)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[254f3239dd070e469f45c3ca8b6ac38e47d6c730,7e87508b5c4d81210d0a736ed01962e52f5c4c56)"}}], "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": "semver", "value": "6.15"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.15)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.55,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.9,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3,*]"}}], "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": "2026-10-18T18:00:10.134249+00:00", "updated": "2026-10-22T22:30:13.429847+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}