{"api_version":"1","generated_at":"2026-10-21T13:17:40+00:00","cve":"CVE-2026-98317","urls":{"html":"https://cve.report/CVE-2026-98317","api":"https://cve.report/api/cve/CVE-2026-98317.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98317","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98317"},"summary":{"title":"neighbour: Enforce min/max to NDTPA_INTERVAL_PROBE_TIME_MS.","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nneighbour: Enforce min/max to NDTPA_INTERVAL_PROBE_TIME_MS.\n\nNDTPA_INTERVAL_PROBE_TIME_MS sets .type and .min but misses\n.validation_type, so no validation is applied:\n\n  # ynl --family rt-neigh --do setneightbl \\\n  --json '{\"name\": \"arp_cache\", \"parms\": {\"interval-probe-time-ms\": 0}}'\n\n  # ynl --family rt-neigh --dump getneightbl --output-json | \\\n  jq '.[] | select(.name == \"arp_cache\" and has(\"config\"))\n          | .parms[\"interval-probe-time-ms\"]'\n  0\n\nMoreover, nla_get_msecs() uses msecs_to_jiffies(), and u64 is\nsilently cast to u32, so a larger value can bypass the min check:\n\n  e.g. 4294967296 == 0x100000000\n\n  # ynl --family rt-neigh --do setneightbl \\\n  --json '{\"name\": \"arp_cache\", \"parms\": {\"interval-probe-time-ms\": 4294967296}}'\n\n  # ynl --family rt-neigh --dump getneightbl --output-json | \\\n  jq '.[] | select(.name == \"arp_cache\" and has(\"config\"))\n          | .parms[\"interval-probe-time-ms\"]'\n  0\n\nmsecs_to_jiffies() returns MAX_JIFFY_OFFSET if the value is\nlarger than INT_MAX.  Also, INT_MAX ms overflows int NEIGH_VAR()\nwhen HZ > 1000 (Alpha, MIPS), and passing a negative integer to\nqueue_delayed_work(unsigned long delay) causes sign extension,\nwhich wraps around the expiry time to the past, resulting in it\nbeing handled as 0 delay in the timer wheel.\n\nLet's use NLA_POLICY_FULL_RANGE() and limit the max to 1 day.\n\nThe same max check is applied to sysctl as well.\n\nNote that this controls the probe interval for NTF_MANAGED\nentries, so the max of 1 day is unlikely to break any\ndeployments.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-06 09:18:23","updated_at":"2026-10-19 10:18:33"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/8550b50e49b01b572e653e572f24ddd73949aa74","name":"https://git.kernel.org/stable/c/8550b50e49b01b572e653e572f24ddd73949aa74","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6d79b223ec44ada58ad37db42f539b60985a7722","name":"https://git.kernel.org/stable/c/6d79b223ec44ada58ad37db42f539b60985a7722","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/982c7f66c04134b77126edbfd8a63ecd6928cfd9","name":"https://git.kernel.org/stable/c/982c7f66c04134b77126edbfd8a63ecd6928cfd9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98317","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98317","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 211da42eaa45db7b0edfde187dd88a85fbd466b5 982c7f66c04134b77126edbfd8a63ecd6928cfd9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 211da42eaa45db7b0edfde187dd88a85fbd466b5 8550b50e49b01b572e653e572f24ddd73949aa74 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 211da42eaa45db7b0edfde187dd88a85fbd466b5 6d79b223ec44ada58ad37db42f539b60985a7722 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.0","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.0 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.54 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.8 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"98317","cve":"CVE-2026-98317","epss":"0.001840000","percentile":"0.072570000","score_date":"2026-10-06","updated_at":"2026-10-07 00:14:55"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["Documentation/netlink/specs/rt-neigh.yaml","Documentation/networking/ip-sysctl.rst","net/core/neighbour.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"982c7f66c04134b77126edbfd8a63ecd6928cfd9","status":"affected","version":"211da42eaa45db7b0edfde187dd88a85fbd466b5","versionType":"git"},{"lessThan":"8550b50e49b01b572e653e572f24ddd73949aa74","status":"affected","version":"211da42eaa45db7b0edfde187dd88a85fbd466b5","versionType":"git"},{"lessThan":"6d79b223ec44ada58ad37db42f539b60985a7722","status":"affected","version":"211da42eaa45db7b0edfde187dd88a85fbd466b5","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["Documentation/netlink/specs/rt-neigh.yaml","Documentation/networking/ip-sysctl.rst","net/core/neighbour.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.0"},{"lessThan":"6.0","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.54","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.8","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.54","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.8","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"6.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nneighbour: Enforce min/max to NDTPA_INTERVAL_PROBE_TIME_MS.\n\nNDTPA_INTERVAL_PROBE_TIME_MS sets .type and .min but misses\n.validation_type, so no validation is applied:\n\n  # ynl --family rt-neigh --do setneightbl \\\n  --json '{\"name\": \"arp_cache\", \"parms\": {\"interval-probe-time-ms\": 0}}'\n\n  # ynl --family rt-neigh --dump getneightbl --output-json | \\\n  jq '.[] | select(.name == \"arp_cache\" and has(\"config\"))\n          | .parms[\"interval-probe-time-ms\"]'\n  0\n\nMoreover, nla_get_msecs() uses msecs_to_jiffies(), and u64 is\nsilently cast to u32, so a larger value can bypass the min check:\n\n  e.g. 4294967296 == 0x100000000\n\n  # ynl --family rt-neigh --do setneightbl \\\n  --json '{\"name\": \"arp_cache\", \"parms\": {\"interval-probe-time-ms\": 4294967296}}'\n\n  # ynl --family rt-neigh --dump getneightbl --output-json | \\\n  jq '.[] | select(.name == \"arp_cache\" and has(\"config\"))\n          | .parms[\"interval-probe-time-ms\"]'\n  0\n\nmsecs_to_jiffies() returns MAX_JIFFY_OFFSET if the value is\nlarger than INT_MAX.  Also, INT_MAX ms overflows int NEIGH_VAR()\nwhen HZ > 1000 (Alpha, MIPS), and passing a negative integer to\nqueue_delayed_work(unsigned long delay) causes sign extension,\nwhich wraps around the expiry time to the past, resulting in it\nbeing handled as 0 delay in the timer wheel.\n\nLet's use NLA_POLICY_FULL_RANGE() and limit the max to 1 day.\n\nThe same max check is applied to sysctl as well.\n\nNote that this controls the probe interval for NTF_MANAGED\nentries, so the max of 1 day is unlikely to break any\ndeployments."}],"providerMetadata":{"dateUpdated":"2026-10-19T09:17:27.952Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/982c7f66c04134b77126edbfd8a63ecd6928cfd9"},{"url":"https://git.kernel.org/stable/c/8550b50e49b01b572e653e572f24ddd73949aa74"},{"url":"https://git.kernel.org/stable/c/6d79b223ec44ada58ad37db42f539b60985a7722"}],"title":"neighbour: Enforce min/max to NDTPA_INTERVAL_PROBE_TIME_MS.","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98317","datePublished":"2026-10-06T08:46:12.351Z","dateReserved":"2026-09-25T10:25:14.339Z","dateUpdated":"2026-10-19T09:17:27.952Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-06 09:18:23","lastModifiedDate":"2026-10-19 10:18:33","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98317","Ordinal":"1","Title":"neighbour: Enforce min/max to NDTPA_INTERVAL_PROBE_TIME_MS.","CVE":"CVE-2026-98317","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98317","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nneighbour: Enforce min/max to NDTPA_INTERVAL_PROBE_TIME_MS.\n\nNDTPA_INTERVAL_PROBE_TIME_MS sets .type and .min but misses\n.validation_type, so no validation is applied:\n\n  # ynl --family rt-neigh --do setneightbl \\\n  --json '{\"name\": \"arp_cache\", \"parms\": {\"interval-probe-time-ms\": 0}}'\n\n  # ynl --family rt-neigh --dump getneightbl --output-json | \\\n  jq '.[] | select(.name == \"arp_cache\" and has(\"config\"))\n          | .parms[\"interval-probe-time-ms\"]'\n  0\n\nMoreover, nla_get_msecs() uses msecs_to_jiffies(), and u64 is\nsilently cast to u32, so a larger value can bypass the min check:\n\n  e.g. 4294967296 == 0x100000000\n\n  # ynl --family rt-neigh --do setneightbl \\\n  --json '{\"name\": \"arp_cache\", \"parms\": {\"interval-probe-time-ms\": 4294967296}}'\n\n  # ynl --family rt-neigh --dump getneightbl --output-json | \\\n  jq '.[] | select(.name == \"arp_cache\" and has(\"config\"))\n          | .parms[\"interval-probe-time-ms\"]'\n  0\n\nmsecs_to_jiffies() returns MAX_JIFFY_OFFSET if the value is\nlarger than INT_MAX.  Also, INT_MAX ms overflows int NEIGH_VAR()\nwhen HZ > 1000 (Alpha, MIPS), and passing a negative integer to\nqueue_delayed_work(unsigned long delay) causes sign extension,\nwhich wraps around the expiry time to the past, resulting in it\nbeing handled as 0 delay in the timer wheel.\n\nLet's use NLA_POLICY_FULL_RANGE() and limit the max to 1 day.\n\nThe same max check is applied to sysctl as well.\n\nNote that this controls the probe interval for NTF_MANAGED\nentries, so the max of 1 day is unlikely to break any\ndeployments.","Type":"Description","Title":"neighbour: Enforce min/max to NDTPA_INTERVAL_PROBE_TIME_MS."}]}}}