CVE-2026-53214 (GCVE-0-2026-53214)

Vulnerability from cvelistv5 – Published: 2026-06-25 08:39 – Updated: 2026-06-25 08:39
VLAI
Title
ipv6: Fix a potential NPD in cleanup_prefix_route()
Summary
In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix a potential NPD in cleanup_prefix_route() addrconf_get_prefix_route() can return the fib6_null_entry sentinel entry which has a NULL fib6_table pointer. Therefore, before setting the route's expiration time, check that we are not working with this entry, as otherwise a NPD will be triggered [1]. Note that the other callers of addrconf_get_prefix_route() are not susceptible to this bug: 1. addrconf_prefix_rcv(): Requests a route with the 'RTF_ADDRCONF | RTF_PREFIX_RT' flags which are not set on fib6_null_entry. 2. modify_prefix_route(): Fixed by commit a747e02430df ("ipv6: avoid possible NULL deref in modify_prefix_route()"). 3. __ipv6_ifa_notify(): Calls ip6_del_rt() which specifically checks for fib6_null_entry and returns an error. [1] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] [...] Call Trace: <TASK> __kasan_check_byte (mm/kasan/common.c:573) lock_acquire.part.0 (kernel/locking/lockdep.c:5842 (discriminator 1)) _raw_spin_lock_bh (kernel/locking/spinlock.c:182 (discriminator 1)) cleanup_prefix_route (net/ipv6/addrconf.c:1280) ipv6_del_addr (net/ipv6/addrconf.c:1342) inet6_addr_del.isra.0 (net/ipv6/addrconf.c:3119) inet6_rtm_deladdr (net/ipv6/addrconf.c:4812) rtnetlink_rcv_msg (net/core/rtnetlink.c:6997) netlink_rcv_skb (net/netlink/af_netlink.c:2555) netlink_unicast (net/netlink/af_netlink.c:1344) netlink_sendmsg (net/netlink/af_netlink.c:1899) __sock_sendmsg (net/socket.c:802 (discriminator 4)) ____sys_sendmsg (net/socket.c:2698) ___sys_sendmsg (net/socket.c:2752) __sys_sendmsg (net/socket.c:2784) do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: bd12abe294c7738421bdfbc486f1909d02db30e9 , < 5f82b02b4059ddc06e4fcfd057bfb59fd6885cd2 (git)
Affected: 5eb902b8e7193cdcb33242af0a56502e6b5206e9 , < 192df376a05c2db15564640f9da7e20907c1fa24 (git)
Affected: 5eb902b8e7193cdcb33242af0a56502e6b5206e9 , < 07d9a0870a178843cea44cfd58c27445dc94cf5f (git)
Affected: 5eb902b8e7193cdcb33242af0a56502e6b5206e9 , < 653a2849305708f75260b5296f17b2a759ff9cc7 (git)
Affected: 5eb902b8e7193cdcb33242af0a56502e6b5206e9 , < b70c687b7cf267fb08586667a3946c8851cad672 (git)
Affected: 6.6.120 , < 6.6.143 (semver)
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Linux Linux Affected: 6.9
Unaffected: 0 , < 6.9 (semver)
Unaffected: 6.6.143 , ≤ 6.6.* (semver)
Unaffected: 6.12.94 , ≤ 6.12.* (semver)
Unaffected: 6.18.36 , ≤ 6.18.* (semver)
Unaffected: 7.0.13 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
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          "product": "Linux",
          "programFiles": [
            "net/ipv6/addrconf.c"
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          "product": "Linux",
          "programFiles": [
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          "vendor": "Linux",
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              "status": "unaffected",
              "version": "7.0.13",
              "versionType": "semver"
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              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
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      "cpeApplicability": [
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              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: Fix a potential NPD in cleanup_prefix_route()\n\naddrconf_get_prefix_route() can return the fib6_null_entry sentinel\nentry which has a NULL fib6_table pointer. Therefore, before setting the\nroute\u0027s expiration time, check that we are not working with this entry,\nas otherwise a NPD will be triggered [1].\n\nNote that the other callers of addrconf_get_prefix_route() are not\nsusceptible to this bug:\n\n1. addrconf_prefix_rcv(): Requests a route with the \u0027RTF_ADDRCONF |\n   RTF_PREFIX_RT\u0027 flags which are not set on fib6_null_entry.\n\n2. modify_prefix_route(): Fixed by commit a747e02430df (\"ipv6: avoid\n   possible NULL deref in modify_prefix_route()\").\n\n3. __ipv6_ifa_notify(): Calls ip6_del_rt() which specifically checks for\n   fib6_null_entry and returns an error.\n\n[1]\nOops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN\nKASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]\n[...]\nCall Trace:\n\u003cTASK\u003e\n__kasan_check_byte (mm/kasan/common.c:573)\nlock_acquire.part.0 (kernel/locking/lockdep.c:5842 (discriminator 1))\n_raw_spin_lock_bh (kernel/locking/spinlock.c:182 (discriminator 1))\ncleanup_prefix_route (net/ipv6/addrconf.c:1280)\nipv6_del_addr (net/ipv6/addrconf.c:1342)\ninet6_addr_del.isra.0 (net/ipv6/addrconf.c:3119)\ninet6_rtm_deladdr (net/ipv6/addrconf.c:4812)\nrtnetlink_rcv_msg (net/core/rtnetlink.c:6997)\nnetlink_rcv_skb (net/netlink/af_netlink.c:2555)\nnetlink_unicast (net/netlink/af_netlink.c:1344)\nnetlink_sendmsg (net/netlink/af_netlink.c:1899)\n__sock_sendmsg (net/socket.c:802 (discriminator 4))\n____sys_sendmsg (net/socket.c:2698)\n___sys_sendmsg (net/socket.c:2752)\n__sys_sendmsg (net/socket.c:2784)\ndo_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)\nentry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-25T08:39:18.209Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/5f82b02b4059ddc06e4fcfd057bfb59fd6885cd2"
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          "url": "https://git.kernel.org/stable/c/192df376a05c2db15564640f9da7e20907c1fa24"
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          "url": "https://git.kernel.org/stable/c/07d9a0870a178843cea44cfd58c27445dc94cf5f"
        },
        {
          "url": "https://git.kernel.org/stable/c/653a2849305708f75260b5296f17b2a759ff9cc7"
        },
        {
          "url": "https://git.kernel.org/stable/c/b70c687b7cf267fb08586667a3946c8851cad672"
        }
      ],
      "title": "ipv6: Fix a potential NPD in cleanup_prefix_route()",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-53214",
    "datePublished": "2026-06-25T08:39:18.209Z",
    "dateReserved": "2026-06-09T07:44:35.392Z",
    "dateUpdated": "2026-06-25T08:39:18.209Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-53214",
      "date": "2026-07-01",
      "epss": "0.00168",
      "percentile": "0.06385"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-53214\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-06-25T09:16:39.053\",\"lastModified\":\"2026-06-30T14:44:27.313\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nipv6: Fix a potential NPD in cleanup_prefix_route()\\n\\naddrconf_get_prefix_route() can return the fib6_null_entry sentinel\\nentry which has a NULL fib6_table pointer. Therefore, before setting the\\nroute\u0027s expiration time, check that we are not working with this entry,\\nas otherwise a NPD will be triggered [1].\\n\\nNote that the other callers of addrconf_get_prefix_route() are not\\nsusceptible to this bug:\\n\\n1. addrconf_prefix_rcv(): Requests a route with the \u0027RTF_ADDRCONF |\\n   RTF_PREFIX_RT\u0027 flags which are not set on fib6_null_entry.\\n\\n2. modify_prefix_route(): Fixed by commit a747e02430df (\\\"ipv6: avoid\\n   possible NULL deref in modify_prefix_route()\\\").\\n\\n3. __ipv6_ifa_notify(): Calls ip6_del_rt() which specifically checks for\\n   fib6_null_entry and returns an error.\\n\\n[1]\\nOops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN\\nKASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]\\n[...]\\nCall Trace:\\n\u003cTASK\u003e\\n__kasan_check_byte (mm/kasan/common.c:573)\\nlock_acquire.part.0 (kernel/locking/lockdep.c:5842 (discriminator 1))\\n_raw_spin_lock_bh (kernel/locking/spinlock.c:182 (discriminator 1))\\ncleanup_prefix_route (net/ipv6/addrconf.c:1280)\\nipv6_del_addr (net/ipv6/addrconf.c:1342)\\ninet6_addr_del.isra.0 (net/ipv6/addrconf.c:3119)\\ninet6_rtm_deladdr (net/ipv6/addrconf.c:4812)\\nrtnetlink_rcv_msg (net/core/rtnetlink.c:6997)\\nnetlink_rcv_skb (net/netlink/af_netlink.c:2555)\\nnetlink_unicast (net/netlink/af_netlink.c:1344)\\nnetlink_sendmsg (net/netlink/af_netlink.c:1899)\\n__sock_sendmsg (net/socket.c:802 (discriminator 4))\\n____sys_sendmsg (net/socket.c:2698)\\n___sys_sendmsg (net/socket.c:2752)\\n__sys_sendmsg (net/socket.c:2784)\\ndo_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)\\nentry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/ipv6/addrconf.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"bd12abe294c7738421bdfbc486f1909d02db30e9\",\"lessThan\":\"5f82b02b4059ddc06e4fcfd057bfb59fd6885cd2\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5eb902b8e7193cdcb33242af0a56502e6b5206e9\",\"lessThan\":\"192df376a05c2db15564640f9da7e20907c1fa24\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5eb902b8e7193cdcb33242af0a56502e6b5206e9\",\"lessThan\":\"07d9a0870a178843cea44cfd58c27445dc94cf5f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5eb902b8e7193cdcb33242af0a56502e6b5206e9\",\"lessThan\":\"653a2849305708f75260b5296f17b2a759ff9cc7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5eb902b8e7193cdcb33242af0a56502e6b5206e9\",\"lessThan\":\"b70c687b7cf267fb08586667a3946c8851cad672\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6.6.120\",\"lessThan\":\"6.6.143\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/ipv6/addrconf.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.9\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.9\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.143\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.94\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.36\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0.13\",\"lessThanOrEqual\":\"7.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/07d9a0870a178843cea44cfd58c27445dc94cf5f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/192df376a05c2db15564640f9da7e20907c1fa24\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5f82b02b4059ddc06e4fcfd057bfb59fd6885cd2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/653a2849305708f75260b5296f17b2a759ff9cc7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b70c687b7cf267fb08586667a3946c8851cad672\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.