CVE-2026-64569
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: mpls: fix NULL deref in mpls_valid_fib_dump_req() on CONFIG_INET=n On CONFIG_INET=n builds, mpls_valid_fib_dump_req() walks the parsed attribute table itself instead of calling ip_valid_fib_dump_req(). The RTA_OIF arm passes tb[RTA_OIF] to nla_get_u32() without checking it is present, so an RTM_GETROUTE dump for AF_MPLS with strict checking and no RTA_OIF hits a NULL dereference. RTM_GETROUTE is RTNL_KIND_GET, which rtnetlink_rcv_msg() permits without CAP_NET_ADMIN, so an unprivileged user can trigger it. Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] RIP: 0010:mpls_valid_fib_dump_req (net/mpls/af_mpls.c:2189) Call Trace: mpls_dump_routes (net/mpls/af_mpls.c:2236) netlink_dump (net/netlink/af_netlink.c:2331) __netlink_dump_start (net/netlink/af_netlink.c:2446) rtnetlink_rcv_msg (net/core/rtnetlink.c:7033) netlink_rcv_skb (net/netlink/af_netlink.c:2556) netlink_unicast (net/netlink/af_netlink.c:1345) netlink_sendmsg (net/netlink/af_netlink.c:1900) __sock_sendmsg (net/socket.c:790) ____sys_sendmsg (net/socket.c:2684) ___sys_sendmsg (net/socket.c:2738) __sys_sendmsg (net/socket.c:2770) do_syscall_64 (arch/x86/entry/syscall_64.c:94) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) Skip unset attributes, as ip_valid_fib_dump_req() does.
View original CVE JSON
{
"id": "CVE-2026-64569",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-08-05T08:16:36.547",
"lastModified": "2026-11-03T18:15:39.353",
"vulnStatus": "Awaiting Analysis",
"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."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"net/mpls/af_mpls.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "196cfebf897266c3450519e916bab9daff74e52c",
"lessThan": "bfc1cb5d6a8308e493e307f1c823d2107abc0a47",
"versionType": "git",
"status": "affected"
},
{
"version": "196cfebf897266c3450519e916bab9daff74e52c",
"lessThan": "03b5a2c29afc8e634924c75d6ee94140e70de88d",
"versionType": "git",
"status": "affected"
},
{
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"lessThan": "e796ce9ef4356dc7cbbaa8373843f77852f2814d",
"versionType": "git",
"status": "affected"
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{
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"lessThan": "d6eee7cd078aaf9dd75efc801f6c9b608a37cd71",
"versionType": "git",
"status": "affected"
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{
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"lessThan": "ad6284ced6a15e4abd57ca4d0793b7bd15ca52ce",
"versionType": "git",
"status": "affected"
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{
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"lessThan": "5f6e7b32bd1fbde10fd31a4143260735ea535b8a",
"versionType": "git",
"status": "affected"
},
{
"version": "196cfebf897266c3450519e916bab9daff74e52c",
"lessThan": "06db79411a280707c7e4bf4b221ff4e664b51502",
"versionType": "git",
"status": "affected"
},
{
"version": "196cfebf897266c3450519e916bab9daff74e52c",
"lessThan": "56d96fededd61192cd7cc8d2b0f36adfd59036c3",
"versionType": "git",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"net/mpls/af_mpls.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "4.20",
"status": "affected"
},
{
"version": "0",
"lessThan": "4.20",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.10.265",
"lessThanOrEqual": "5.10.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.15.216",
"lessThanOrEqual": "5.15.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.183",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.6.148",
"lessThanOrEqual": "6.6.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.12.101",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.18.42",
"lessThanOrEqual": "6.18.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.1.6",
"lessThanOrEqual": "7.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.2",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {},
"references": [
{
"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"
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{
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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{
"url": "https://git.kernel.org/stable/c/ad6284ced6a15e4abd57ca4d0793b7bd15ca52ce",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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{
"url": "https://git.kernel.org/stable/c/bfc1cb5d6a8308e493e307f1c823d2107abc0a47",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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{
"url": "https://git.kernel.org/stable/c/d6eee7cd078aaf9dd75efc801f6c9b608a37cd71",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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{
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}