{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-35857",
  "modified": "2026-10-09T11:39:44Z",
  "upstream": [
    "CVE-2024-35857"
  ],
  "published": "2024-05-17T14:47:56Z",
  "summary": "icmp: prevent possible NULL dereferences from icmp_build_probe()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nicmp: prevent possible NULL dereferences from icmp_build_probe()\n\nFirst problem is a double call to __in_dev_get_rcu(), because\nthe second one could return NULL.\n\nif (__in_dev_get_rcu(dev) && __in_dev_get_rcu(dev)->ifa_list)\n\nSecond problem is a read from dev->ip6_ptr with no NULL check:\n\nif (!list_empty(&rcu_dereference(dev->ip6_ptr)->addr_list))\n\nUse the correct RCU API to fix these.\n\nv2: add missing include <net/addrconf.h>",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
    }
  ],
  "affected": [
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        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
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        "1:6.1.58-1+rpt2",
        "1:6.1.63-1+rpt1",
        "1:6.1.73-1+rpt1",
        "1:6.6.20-1+rpt1",
        "1:6.6.28-1+rpt1"
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  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-35857"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/23b7ee4a8d559bf38eac7ce5bb2f6ebf76f9c401"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/599c9ad5e1d43f5c12d869f5fd406ba5d8c55270"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d68dc711d84fdcf698e5d45308c3ddeede586350"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3e2979bf080c40da4f7c93aff8575ab8bc62b767"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c58e88d49097bd12dfcfef4f075b43f5d5830941"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-05T11:52:36Z",
    "severity": {
      "source": "kernel CNA",
      "cvss_v3_score": 7.5,
      "cvss_v3_severity": "High",
      "scenario": "AV:N - The faulting code is reached directly from `icmp_rcv()`/`icmpv6_rcv()` on receipt of an RFC 8335 ICMP_EXT_ECHO (type 42) or ICMPV6_EXT_ECHO_REQUEST packet, so any remote host that can route a unicast IP packet to the target triggers it.\nAC:L - A single crafted ICMP packet is sufficient and the attacker fully chooses the target netdevice via the Interface Identification Object (by name, ifindex, or address); on CONFIG_IPV6=n, ipv6-disabled, or low-MTU-interface systems `dev->ip6_ptr` is unconditionally NULL, making the crash 100% deterministic with no race to win and no memory layout to groom.\nPR:N - The PROBE handler runs in softirq packet-receive context with no socket, no authentication, and no capability or credential check anywhere on the path from `ip_local_deliver()` to `icmp_build_probe()`.\nUI:N - The kernel processes the incoming ICMP Extended Echo Request autonomously in the receive path; no local user or administrator action is needed at attack time.\nS:U - The fault occurs in the kernel's own networking receive path and its impact is confined to the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:N - The bug is a read-only dereference at a fixed small offset from NULL that oopses before any value is used; at most a single status bit could be reflected, yielding no kernel memory contents or address disclosure.\nI:N - There is no write primitive \u2014 only NULL-pointer loads (`list_empty(&NULL->addr_list)` and `NULL->ifa_list`) \u2014 so no kernel memory or control flow can be modified.\nA:H - The NULL dereference oopses in NET_RX softirq context, killing the softirq and panicking the box on `panic_on_oops` systems; an unauthenticated remote attacker can repeat it at will for a persistent remote denial of service."
    }
  }
}