CVE-2026-45841

{"id": "CVE-2026-45841", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384", "lessThan": "cb833bbc1b3c51e08652d3c86298307c07d3f2db", "versionType": "git"}, {"status": "affected", "version": "11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384", "lessThan": "26900306a5a2c3e4f75c643a064525526bb6e5f3", "versionType": "git"}, {"status": "affected", "version": "11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384", "lessThan": "0694618cf3e9b120666e31f5f383a6e466d95a0d", "versionType": "git"}, {"status": "affected", "version": "11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384", "lessThan": "8def8fbd23f40e945febe913d04b731012ce0082", "versionType": "git"}, {"status": "affected", "version": "11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384", "lessThan": "c55940895245d8ef658ab381248a28755218d625", "versionType": "git"}, {"status": "affected", "version": "11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384", "lessThan": "fb965b1cfe92b28d28b5ebe3116b81dbef9f2d2f", "versionType": "git"}, {"status": "affected", "version": "11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384", "lessThan": "9a05e195618a6d474f2bcd5b6376d0ffc2f00366", "versionType": "git"}, {"status": "affected", "version": "11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384", "lessThan": "2195574dc6d9017d32ac346987e12659f931d932", "versionType": "git"}], "programFiles": ["net/netfilter/nfnetlink_osf.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.31"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.31", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.258", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.209", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.175", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.141", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.91", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.33", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.10", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/netfilter/nfnetlink_osf.c"], "defaultStatus": "affected"}]}], "published": "2026-05-27T11:16:23.493", "references": [{"url": "https://git.kernel.org/stable/c/0694618cf3e9b120666e31f5f383a6e466d95a0d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/2195574dc6d9017d32ac346987e12659f931d932", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/26900306a5a2c3e4f75c643a064525526bb6e5f3", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/8def8fbd23f40e945febe913d04b731012ce0082", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9a05e195618a6d474f2bcd5b6376d0ffc2f00366", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c55940895245d8ef658ab381248a28755218d625", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/cb833bbc1b3c51e08652d3c86298307c07d3f2db", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/fb965b1cfe92b28d28b5ebe3116b81dbef9f2d2f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-369"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nfnetlink_osf: fix divide-by-zero in OSF_WSS_MODULO\n\nnf_osf_match_one() computes ctx->window % f->wss.val in the\nOSF_WSS_MODULO branch with no guard for f->wss.val == 0. A\nCAP_NET_ADMIN user can add such a fingerprint via nfnetlink; a\nsubsequent matching TCP SYN divides by zero and panics the kernel.\n\nReject the bogus fingerprint in nfnl_osf_add_callback() above the\nper-option for-loop. f->wss is per-fingerprint, not per-option, so\nthe check must run regardless of f->opt_num (including 0). Also\nreject wss.wc >= OSF_WSS_MAX; nf_osf_match_one() already treats that\nas \"should not happen\".\n\nCrash:\n Oops: divide error: 0000 [#1] SMP KASAN NOPTI\n RIP: 0010:nf_osf_match_one (net/netfilter/nfnetlink_osf.c:98)\n Call Trace:\n <IRQ>\n nf_osf_match (net/netfilter/nfnetlink_osf.c:220)\n xt_osf_match_packet (net/netfilter/xt_osf.c:32)\n ipt_do_table (net/ipv4/netfilter/ip_tables.c:348)\n nf_hook_slow (net/netfilter/core.c:622)\n ip_local_deliver (net/ipv4/ip_input.c:265)\n ip_rcv (include/linux/skbuff.h:1162)\n __netif_receive_skb_one_core (net/core/dev.c:6181)\n process_backlog (net/core/dev.c:6642)\n __napi_poll (net/core/dev.c:7710)\n net_rx_action (net/core/dev.c:7945)\n handle_softirqs (kernel/softirq.c:622)"}], "lastModified": "2026-06-26T18:52:56.330", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "06FFC430-8D78-4549-B8DB-B37AFAF4D4D3", "versionEndExcluding": "5.10.258", "versionStartIncluding": "2.6.31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "919C10A9-7951-4A74-BADD-C135A0A8D8B4", "versionEndExcluding": "5.15.209", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "92385813-D91D-480D-83A1-F423D2CBB2BA", "versionEndExcluding": "6.1.175", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "97A9FFFA-22BB-4D5C-9790-5A2286E392F7", "versionEndExcluding": "6.6.141", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C918746B-DE6F-448F-A93E-A04C5481688D", "versionEndExcluding": "6.12.91", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "96D99E49-380D-43AB-BDBA-25C3AD018A9C", "versionEndExcluding": "6.18.33", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A13475D2-59BF-4716-94B5-7C1D239A2CF4", "versionEndExcluding": "7.0.10", "versionStartIncluding": "6.19"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}