{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-56601",
  "modified": "2026-10-09T11:39:44Z",
  "upstream": [
    "CVE-2024-56601"
  ],
  "published": "2024-12-27T14:59:59Z",
  "summary": "net: inet: do not leave a dangling sk pointer in inet_create()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: inet: do not leave a dangling sk pointer in inet_create()\n\nsock_init_data() attaches the allocated sk object to the provided sock\nobject. If inet_create() fails later, the sk object is freed, but the\nsock object retains the dangling pointer, which may create use-after-free\nlater.\n\nClear the sk pointer in the sock object on error.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
    }
  ],
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  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-56601"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f8a3f255f7509a209292871715cda03779640c8d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2bc34d8c8898ae9fddf4612501aabb22d76c2b2c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3e8258070b0f2aba66b3ef18883de229674fb288"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b4513cfd3a10c03c660d5d3d26c2e322efbfdd9b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/25447c6aaa7235f155292b0c58a067347e8ae891"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/691d6d816f93b2a1008c14178399061466e674ef"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9365fa510c6f82e3aa550a09d0c5c6b44dbc78ff"
    }
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  "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": 7.8,
      "cvss_v3_severity": "High",
      "scenario": "AV:L - The vulnerable code is only reachable through the local `socket(2)` syscall path (`__sock_create` \u2192 `inet_create`); no remote peer input is involved. Exploitation requires the attacker to execute code on the target system.\nAC:L - The failure paths are triggered deterministically and unconditionally by an attacker-chosen syscall \u2014 `socket(AF_INET, SOCK_DGRAM, IPPROTO_ICMP)` fails in `ping_init_sock()` with -EACCES under the common default `ping_group_range` of \"1 0\", and the attacker can repeat it arbitrarily to groom the heap. No race and no attacker-uncontrollable precondition is involved.\nPR:L - Any ordinary unprivileged local user can call `socket()`; the ICMP-datagram and MPTCP paths involve no capability check at all, and the `SOCK_RAW` variant's `CAP_NET_RAW` is `ns_capable(net->user_ns, ...)`, obtainable via `unshare -Urn`.\nUI:N - The attacker triggers the whole sequence from their own process with a single syscall; no action by any other user or administrator is needed.\nS:U - The dangling pointer and any resulting corruption stay within the kernel's own security authority \u2014 this is a standard local kernel memory-safety issue with no VM, IOMMU, or sandbox boundary crossed.\nC:H - `sock->sk` is left pointing at a `struct sock` already freed by `sk_common_release()`; any subsequent dereference reads reclaimed slab memory whose contents the attacker can spray, yielding disclosure of kernel data and pointers.\nI:H - A use-after-free on a `struct sock` \u2014 an object dense with function pointers (`sk_destruct`, `sk_backlog_rcv`, `sk_prot` ops) \u2014 gives an attacker who reclaims the freed slab a write/control-flow-hijack primitive, so integrity impact must be treated as High.\nA:H - Dereferencing the stale `sk` pointer corrupts or faults on freed memory, producing a kernel oops or panic; the trigger is a single unprivileged syscall that can be repeated at will."
    }
  }
}