CVE-2026-64569

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The\nRTA_OIF arm passes tb[RTA_OIF] to nla_get_u32() without checking it is\npresent, so an RTM_GETROUTE dump for AF_MPLS with strict checking and no\nRTA_OIF hits a NULL dereference.\n\nRTM_GETROUTE is RTNL_KIND_GET, which rtnetlink_rcv_msg() permits without\nCAP_NET_ADMIN, so an unprivileged user can trigger it.\n\n Oops: general protection fault, probably for non-canonical address\n 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI\n KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\n RIP: 0010:mpls_valid_fib_dump_req (net/mpls/af_mpls.c:2189)\n Call Trace:\n mpls_dump_routes (net/mpls/af_mpls.c:2236)\n netlink_dump (net/netlink/af_netlink.c:2331)\n __netlink_dump_start (net/netlink/af_netlink.c:2446)\n rtnetlink_rcv_msg (net/core/rtnetlink.c:7033)\n netlink_rcv_skb (net/netlink/af_netlink.c:2556)\n netlink_unicast (net/netlink/af_netlink.c:1345)\n netlink_sendmsg (net/netlink/af_netlink.c:1900)\n __sock_sendmsg (net/socket.c:790)\n ____sys_sendmsg (net/socket.c:2684)\n ___sys_sendmsg (net/socket.c:2738)\n __sys_sendmsg (net/socket.c:2770)\n do_syscall_64 (arch/x86/entry/syscall_64.c:94)\n entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)\n\nSkip unset attributes, as ip_valid_fib_dump_req() does."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/mpls/af_mpls.c"], "versions": [{"version": "196cfebf897266c3450519e916bab9daff74e52c", "lessThan": "bfc1cb5d6a8308e493e307f1c823d2107abc0a47", "status": "affected", "versionType": "git"}, {"version": "196cfebf897266c3450519e916bab9daff74e52c", "lessThan": "03b5a2c29afc8e634924c75d6ee94140e70de88d", "status": "affected", "versionType": "git"}, {"version": "196cfebf897266c3450519e916bab9daff74e52c", "lessThan": "e796ce9ef4356dc7cbbaa8373843f77852f2814d", "status": "affected", "versionType": "git"}, {"version": "196cfebf897266c3450519e916bab9daff74e52c", "lessThan": "d6eee7cd078aaf9dd75efc801f6c9b608a37cd71", "status": "affected", "versionType": "git"}, {"version": "196cfebf897266c3450519e916bab9daff74e52c", "lessThan": "ad6284ced6a15e4abd57ca4d0793b7bd15ca52ce", "status": "affected", "versionType": "git"}, {"version": "196cfebf897266c3450519e916bab9daff74e52c", "lessThan": "5f6e7b32bd1fbde10fd31a4143260735ea535b8a", "status": "affected", "versionType": "git"}, {"version": "196cfebf897266c3450519e916bab9daff74e52c", "lessThan": "06db79411a280707c7e4bf4b221ff4e664b51502", "status": "affected", "versionType": "git"}, {"version": "196cfebf897266c3450519e916bab9daff74e52c", "lessThan": "56d96fededd61192cd7cc8d2b0f36adfd59036c3", "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/mpls/af_mpls.c"], "versions": [{"version": "4.20", "status": "affected"}, {"version": "0", "lessThan": "4.20", "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": "6.6.148", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.101", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.42", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.6", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": 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The\nRTA_OIF arm passes tb[RTA_OIF] to nla_get_u32() without checking it is\npresent, so an RTM_GETROUTE dump for AF_MPLS with strict checking and no\nRTA_OIF hits a NULL dereference.\n\nRTM_GETROUTE is RTNL_KIND_GET, which rtnetlink_rcv_msg() permits without\nCAP_NET_ADMIN, so an unprivileged user can trigger it.\n\n Oops: general protection fault, probably for non-canonical address\n 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI\n KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\n RIP: 0010:mpls_valid_fib_dump_req (net/mpls/af_mpls.c:2189)\n Call Trace:\n mpls_dump_routes (net/mpls/af_mpls.c:2236)\n netlink_dump (net/netlink/af_netlink.c:2331)\n __netlink_dump_start (net/netlink/af_netlink.c:2446)\n rtnetlink_rcv_msg (net/core/rtnetlink.c:7033)\n netlink_rcv_skb (net/netlink/af_netlink.c:2556)\n netlink_unicast (net/netlink/af_netlink.c:1345)\n netlink_sendmsg (net/netlink/af_netlink.c:1900)\n __sock_sendmsg (net/socket.c:790)\n ____sys_sendmsg (net/socket.c:2684)\n ___sys_sendmsg (net/socket.c:2738)\n __sys_sendmsg (net/socket.c:2770)\n do_syscall_64 (arch/x86/entry/syscall_64.c:94)\n entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)\n\nSkip unset attributes, as ip_valid_fib_dump_req() does."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.265", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.216", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.183", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.148", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.101", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.42", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.6", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "4.20"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-19T16:28:44.216Z"}}}, "cveMetadata": {"cveId": "CVE-2026-64569", "state": "PUBLISHED", "dateUpdated": "2026-11-06T16:44:57.360Z", "dateReserved": "2026-07-19T15:36:31.797Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-08-05T08:08:07.233Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/mpls/af_mpls.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "bfc1cb5d6a8308e493e307f1c823d2107abc0a47", "status": "affected", "version": "196cfebf897266c3450519e916bab9daff74e52c", "versionType": "git"}, {"lessThan": "03b5a2c29afc8e634924c75d6ee94140e70de88d", "status": "affected", "version": "196cfebf897266c3450519e916bab9daff74e52c", "versionType": "git"}, {"lessThan": "e796ce9ef4356dc7cbbaa8373843f77852f2814d", "status": "affected", "version": "196cfebf897266c3450519e916bab9daff74e52c", "versionType": "git"}, {"lessThan": "d6eee7cd078aaf9dd75efc801f6c9b608a37cd71", "status": "affected", "version": "196cfebf897266c3450519e916bab9daff74e52c", "versionType": "git"}, {"lessThan": "ad6284ced6a15e4abd57ca4d0793b7bd15ca52ce", "status": "affected", "version": "196cfebf897266c3450519e916bab9daff74e52c", "versionType": "git"}, {"lessThan": "5f6e7b32bd1fbde10fd31a4143260735ea535b8a", "status": "affected", "version": "196cfebf897266c3450519e916bab9daff74e52c", "versionType": "git"}, {"lessThan": "06db79411a280707c7e4bf4b221ff4e664b51502", "status": "affected", "version": "196cfebf897266c3450519e916bab9daff74e52c", "versionType": "git"}, {"lessThan": "56d96fededd61192cd7cc8d2b0f36adfd59036c3", "status": "affected", "version": "196cfebf897266c3450519e916bab9daff74e52c", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/mpls/af_mpls.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.20"}, {"lessThan": "4.20", "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": "6.6.148", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.101", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.42", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.6", "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\nmpls: fix NULL deref in mpls_valid_fib_dump_req() on CONFIG_INET=n\n\nOn CONFIG_INET=n builds, mpls_valid_fib_dump_req() walks the parsed\nattribute table itself instead of calling ip_valid_fib_dump_req(). The\nRTA_OIF arm passes tb[RTA_OIF] to nla_get_u32() without checking it is\npresent, so an RTM_GETROUTE dump for AF_MPLS with strict checking and no\nRTA_OIF hits a NULL dereference.\n\nRTM_GETROUTE is RTNL_KIND_GET, which rtnetlink_rcv_msg() permits without\nCAP_NET_ADMIN, so an unprivileged user can trigger it.\n\n Oops: general protection fault, probably for non-canonical address\n 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI\n KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\n RIP: 0010:mpls_valid_fib_dump_req (net/mpls/af_mpls.c:2189)\n Call Trace:\n mpls_dump_routes (net/mpls/af_mpls.c:2236)\n netlink_dump (net/netlink/af_netlink.c:2331)\n __netlink_dump_start (net/netlink/af_netlink.c:2446)\n rtnetlink_rcv_msg (net/core/rtnetlink.c:7033)\n netlink_rcv_skb (net/netlink/af_netlink.c:2556)\n netlink_unicast (net/netlink/af_netlink.c:1345)\n netlink_sendmsg (net/netlink/af_netlink.c:1900)\n __sock_sendmsg (net/socket.c:790)\n ____sys_sendmsg (net/socket.c:2684)\n ___sys_sendmsg (net/socket.c:2738)\n __sys_sendmsg (net/socket.c:2770)\n do_syscall_64 (arch/x86/entry/syscall_64.c:94)\n entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)\n\nSkip unset attributes, as ip_valid_fib_dump_req() does."}], "id": "CVE-2026-64569", "lastModified": "2026-11-06T17:19:15.580", "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-64569", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T16:41:31.330499Z", "version": "2.0.3"}}]}, "published": "2026-08-05T08:16:36.547", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/03b5a2c29afc8e634924c75d6ee94140e70de88d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/06db79411a280707c7e4bf4b221ff4e664b51502"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/56d96fededd61192cd7cc8d2b0f36adfd59036c3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5f6e7b32bd1fbde10fd31a4143260735ea535b8a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ad6284ced6a15e4abd57ca4d0793b7bd15ca52ce"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bfc1cb5d6a8308e493e307f1c823d2107abc0a47"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d6eee7cd078aaf9dd75efc801f6c9b608a37cd71"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e796ce9ef4356dc7cbbaa8373843f77852f2814d"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: mpls: fix NULL deref in mpls_valid_fib_dump_req() on CONFIG_INET=n", "id": "2511406", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2511406"}, "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-476", "details": ["A flaw was found in the Linux kernel's Multiprotocol Label Switching (MPLS) subsystem. An unprivileged local user could send a specially crafted network message, leading to a null pointer dereference. This vulnerability could cause a system crash, resulting in a denial of service."], "name": "CVE-2026-64569", "public_date": "2026-08-05T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64569\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64569\nhttps://lore.kernel.org/linux-cve-announce/2026080559-CVE-2026-64569-3355@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[196cfebf897266c3450519e916bab9daff74e52c,d6eee7cd078aaf9dd75efc801f6c9b608a37cd71)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[196cfebf897266c3450519e916bab9daff74e52c,ad6284ced6a15e4abd57ca4d0793b7bd15ca52ce)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[196cfebf897266c3450519e916bab9daff74e52c,5f6e7b32bd1fbde10fd31a4143260735ea535b8a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[196cfebf897266c3450519e916bab9daff74e52c,06db79411a280707c7e4bf4b221ff4e664b51502)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[196cfebf897266c3450519e916bab9daff74e52c,56d96fededd61192cd7cc8d2b0f36adfd59036c3)"}}], "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": "4.20"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,4.20)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.148,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.101,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.42,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.6,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc4,*]"}}], "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": "2026-08-05T10:00:03.603507+00:00", "updated": "2026-08-06T13:30:02.716209+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-476"]}