CVE-2026-98625

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98625", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.360Z", "datePublished": "2026-10-18T15:19:46.372Z", "dateUpdated": "2026-10-19T09:22:53.321Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:22:53.321Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: flowtable: publish HW_DEAD after worker is done\n\nflow_offload_work_del() sets NF_FLOW_HW_DEAD before the work handler\nclears NF_FLOW_HW_PENDING. Once a flow is both HW_DYING and HW_DEAD, a\nconcurrent garbage collection pass can remove it and schedule it for RCU\nfreeing.\n\nThe offload worker holds neither an RCU read lock nor a reference to the\nflow. If it is preempted after publishing HW_DEAD, the RCU callback can\nfree the flow before the worker resumes and clears HW_PENDING, resulting\nin a use-after-free.\n\nMove HW_DEAD publication to the common worker epilogue after the pending\nbit is cleared, making it the final flow access by destroy work. Order all\npreceding flow accesses before publishing the bit that allows garbage\ncollection to free the object."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/netfilter/nf_flow_table_offload.c"], "versions": [{"version": "2c8897953f3b2ff5498f3f275708a742bfcdbc24", "lessThan": "f92e8f39726ba68a7c42c6b7566be687c8161579", "status": "affected", "versionType": "git"}, {"version": "2c8897953f3b2ff5498f3f275708a742bfcdbc24", "lessThan": "00e452a7ca9fda135ea3d04a11128d5088e354a8", "status": "affected", "versionType": "git"}, {"version": "2c8897953f3b2ff5498f3f275708a742bfcdbc24", "lessThan": "56f39c7d139bb76072efe2fb3dcafc13ba915ad8", "status": "affected", "versionType": "git"}, {"version": "2c8897953f3b2ff5498f3f275708a742bfcdbc24", "lessThan": "e20701843032c438f879066a77ea85e361c6b999", "status": "affected", "versionType": "git"}, {"version": "2c8897953f3b2ff5498f3f275708a742bfcdbc24", "lessThan": "b4f0f05dfbe836a171bff261f17d098a4d5461ea", "status": "affected", "versionType": "git"}, {"version": "2c8897953f3b2ff5498f3f275708a742bfcdbc24", "lessThan": "b0ef9450e93f2adeb77593db14c2ac7c6c8f5060", "status": "affected", "versionType": "git"}, {"version": "2c8897953f3b2ff5498f3f275708a742bfcdbc24", "lessThan": "f26652e99f519e6bd34f8a9b48fbb33c603585f2", "status": "affected", "versionType": "git"}, {"version": "2c8897953f3b2ff5498f3f275708a742bfcdbc24", "lessThan": "d644b23afe1ef509c9961a6d84a093c2587edf02", "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/netfilter/nf_flow_table_offload.c"], "versions": [{"version": "5.7", "status": "affected"}, {"version": "0", "lessThan": "5.7", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.271", "lessThanOrEqual": "5.10.*", "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": "6.12.112", "lessThanOrEqual": "6.12.*", "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": "5.7", "versionEndExcluding": "5.10.271"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "5.15.222"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.12.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.18.55"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "7.2.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/f92e8f39726ba68a7c42c6b7566be687c8161579"}, {"url": "https://git.kernel.org/stable/c/00e452a7ca9fda135ea3d04a11128d5088e354a8"}, {"url": "https://git.kernel.org/stable/c/56f39c7d139bb76072efe2fb3dcafc13ba915ad8"}, {"url": "https://git.kernel.org/stable/c/e20701843032c438f879066a77ea85e361c6b999"}, {"url": "https://git.kernel.org/stable/c/b4f0f05dfbe836a171bff261f17d098a4d5461ea"}, {"url": "https://git.kernel.org/stable/c/b0ef9450e93f2adeb77593db14c2ac7c6c8f5060"}, {"url": "https://git.kernel.org/stable/c/f26652e99f519e6bd34f8a9b48fbb33c603585f2"}, {"url": "https://git.kernel.org/stable/c/d644b23afe1ef509c9961a6d84a093c2587edf02"}], "title": "netfilter: flowtable: publish HW_DEAD after worker is done", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/netfilter/nf_flow_table_offload.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "f92e8f39726ba68a7c42c6b7566be687c8161579", "status": "affected", "version": "2c8897953f3b2ff5498f3f275708a742bfcdbc24", "versionType": "git"}, {"lessThan": "00e452a7ca9fda135ea3d04a11128d5088e354a8", "status": "affected", "version": "2c8897953f3b2ff5498f3f275708a742bfcdbc24", "versionType": "git"}, {"lessThan": "56f39c7d139bb76072efe2fb3dcafc13ba915ad8", "status": "affected", "version": "2c8897953f3b2ff5498f3f275708a742bfcdbc24", "versionType": "git"}, {"lessThan": "e20701843032c438f879066a77ea85e361c6b999", "status": "affected", "version": "2c8897953f3b2ff5498f3f275708a742bfcdbc24", "versionType": "git"}, {"lessThan": "b4f0f05dfbe836a171bff261f17d098a4d5461ea", "status": "affected", "version": "2c8897953f3b2ff5498f3f275708a742bfcdbc24", "versionType": "git"}, {"lessThan": "b0ef9450e93f2adeb77593db14c2ac7c6c8f5060", "status": "affected", "version": "2c8897953f3b2ff5498f3f275708a742bfcdbc24", "versionType": "git"}, {"lessThan": "f26652e99f519e6bd34f8a9b48fbb33c603585f2", "status": "affected", "version": "2c8897953f3b2ff5498f3f275708a742bfcdbc24", "versionType": "git"}, {"lessThan": "d644b23afe1ef509c9961a6d84a093c2587edf02", "status": "affected", "version": "2c8897953f3b2ff5498f3f275708a742bfcdbc24", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/netfilter/nf_flow_table_offload.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.7"}, {"lessThan": "5.7", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.271", "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": "6.12.112", "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\nnetfilter: flowtable: publish HW_DEAD after worker is done\n\nflow_offload_work_del() sets NF_FLOW_HW_DEAD before the work handler\nclears NF_FLOW_HW_PENDING. Once a flow is both HW_DYING and HW_DEAD, a\nconcurrent garbage collection pass can remove it and schedule it for RCU\nfreeing.\n\nThe offload worker holds neither an RCU read lock nor a reference to the\nflow. If it is preempted after publishing HW_DEAD, the RCU callback can\nfree the flow before the worker resumes and clears HW_PENDING, resulting\nin a use-after-free.\n\nMove HW_DEAD publication to the common worker epilogue after the pending\nbit is cleared, making it the final flow access by destroy work. Order all\npreceding flow accesses before publishing the bit that allows garbage\ncollection to free the object."}], "id": "CVE-2026-98625", "lastModified": "2026-10-19T10:19:26.700", "metrics": {}, "published": "2026-10-18T16:17:15.513", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/00e452a7ca9fda135ea3d04a11128d5088e354a8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/56f39c7d139bb76072efe2fb3dcafc13ba915ad8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b0ef9450e93f2adeb77593db14c2ac7c6c8f5060"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b4f0f05dfbe836a171bff261f17d098a4d5461ea"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d644b23afe1ef509c9961a6d84a093c2587edf02"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e20701843032c438f879066a77ea85e361c6b999"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f26652e99f519e6bd34f8a9b48fbb33c603585f2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f92e8f39726ba68a7c42c6b7566be687c8161579"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: netfilter: flowtable: publish HW_DEAD after worker is done", "id": "2554960", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2554960"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/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:\nnetfilter: flowtable: publish HW_DEAD after worker is done\nflow_offload_work_del() sets NF_FLOW_HW_DEAD before the work handler\nclears NF_FLOW_HW_PENDING. Once a flow is both HW_DYING and HW_DEAD, a\nconcurrent garbage collection pass can remove it and schedule it for RCU\nfreeing.\nThe offload worker holds neither an RCU read lock nor a reference to the\nflow. If it is preempted after publishing HW_DEAD, the RCU callback can\nfree the flow before the worker resumes and clears HW_PENDING, resulting\nin a use-after-free.\nMove HW_DEAD publication to the common worker epilogue after the pending\nbit is cleared, making it the final flow access by destroy work. Order all\npreceding flow accesses before publishing the bit that allows garbage\ncollection to free the object.", "A flaw was found in the Linux kernel's netfilter subsystem. A timing conflict, or race condition, in the flowtable offload component allows flow data to be prematurely released from memory while still being processed by a cleanup worker. A local attacker could exploit this use-after-free vulnerability during network connection teardown to cause a Denial of Service (DoS) through a system crash or potentially escalate privileges."], "name": "CVE-2026-98625", "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": "2026-10-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98625\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98625\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98625.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2c8897953f3b2ff5498f3f275708a742bfcdbc24,f92e8f39726ba68a7c42c6b7566be687c8161579)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2c8897953f3b2ff5498f3f275708a742bfcdbc24,00e452a7ca9fda135ea3d04a11128d5088e354a8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2c8897953f3b2ff5498f3f275708a742bfcdbc24,56f39c7d139bb76072efe2fb3dcafc13ba915ad8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2c8897953f3b2ff5498f3f275708a742bfcdbc24,e20701843032c438f879066a77ea85e361c6b999)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2c8897953f3b2ff5498f3f275708a742bfcdbc24,b4f0f05dfbe836a171bff261f17d098a4d5461ea)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2c8897953f3b2ff5498f3f275708a742bfcdbc24,b0ef9450e93f2adeb77593db14c2ac7c6c8f5060)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2c8897953f3b2ff5498f3f275708a742bfcdbc24,f26652e99f519e6bd34f8a9b48fbb33c603585f2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2c8897953f3b2ff5498f3f275708a742bfcdbc24,d644b23afe1ef509c9961a6d84a093c2587edf02)"}}], "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": "5.7"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.7)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.271,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.222,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.189,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.158,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.112,6.13.0)"}}, {"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": "semver", "value": "[7.3-rc5,*]"}}], "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": "2026-10-18T22:45:04.779627+00:00", "updated": "2026-10-23T07:15:17.226486+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}