{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/cpumap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "b58d34068fd9f96bfc7d389988dfaf9a92a8fe00",
              "status": "affected",
              "version": "11941f8a85362f612df61f4aaab0e41b64d2111d",
              "versionType": "git"
            },
            {
              "lessThan": "cbd000451885801e9bbfd9cf7a7946806a85cb5e",
              "status": "affected",
              "version": "11941f8a85362f612df61f4aaab0e41b64d2111d",
              "versionType": "git"
            },
            {
              "lessThan": "937345720d18f1ad006ba3d5dcb3fa121037b8a2",
              "status": "affected",
              "version": "11941f8a85362f612df61f4aaab0e41b64d2111d",
              "versionType": "git"
            },
            {
              "lessThan": "7c62b75cd1a792e14b037fa4f61f9b18914e7de1",
              "status": "affected",
              "version": "11941f8a85362f612df61f4aaab0e41b64d2111d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/cpumap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.15"
            },
            {
              "lessThan": "5.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.126",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.45",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.4.*",
              "status": "unaffected",
              "version": "6.4.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.5",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.126",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.45",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.4.10",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.5",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, cpumap: Handle skb as well when clean up ptr_ring\n\nThe following warning was reported when running xdp_redirect_cpu with\nboth skb-mode and stress-mode enabled:\n\n  ------------[ cut here ]------------\n  Incorrect XDP memory type (-2128176192) usage\n  WARNING: CPU: 7 PID: 1442 at net/core/xdp.c:405\n  Modules linked in:\n  CPU: 7 PID: 1442 Comm: kworker/7:0 Tainted: G  6.5.0-rc2+ #1\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996)\n  Workqueue: events __cpu_map_entry_free\n  RIP: 0010:__xdp_return+0x1e4/0x4a0\n  ......\n  Call Trace:\n   \u003cTASK\u003e\n   ? show_regs+0x65/0x70\n   ? __warn+0xa5/0x240\n   ? __xdp_return+0x1e4/0x4a0\n   ......\n   xdp_return_frame+0x4d/0x150\n   __cpu_map_entry_free+0xf9/0x230\n   process_one_work+0x6b0/0xb80\n   worker_thread+0x96/0x720\n   kthread+0x1a5/0x1f0\n   ret_from_fork+0x3a/0x70\n   ret_from_fork_asm+0x1b/0x30\n   \u003c/TASK\u003e\n\nThe reason for the warning is twofold. One is due to the kthread\ncpu_map_kthread_run() is stopped prematurely. Another one is\n__cpu_map_ring_cleanup() doesn\u0027t handle skb mode and treats skbs in\nptr_ring as XDP frames.\n\nPrematurely-stopped kthread will be fixed by the preceding patch and\nptr_ring will be empty when __cpu_map_ring_cleanup() is called. But\nas the comments in __cpu_map_ring_cleanup() said, handling and freeing\nskbs in ptr_ring as well to \"catch any broken behaviour gracefully\"."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - Triggering requires local BPF syscalls (cpumap creation, XDP program load, map update/delete) to set up and then tear down the cpumap entry; a purely remote attacker cannot reach `__cpu_map_ring_cleanup()`.\nAC:L - The attacker controls every side of the race \u2014 map entry create/delete timing, the CPU pressure that starves the bound cpumap kthread, and the packet injection that leaves skbs in the ptr_ring \u2014 and no rare kernel config is needed since generic (skb-mode) XDP works on any netdev.\nPR:L - Requires `bpf_capable()` plus `CAP_NET_ADMIN`, i.e. an unprivileged-but-capability-granted service account (XDP/eBPF datapath agents, container network plugins) rather than full root, matching the kernel CNA\u0027s standard treatment of BPF-subsystem flaws as low-privilege local attacks.\nUI:N - The entire sequence \u2014 map setup, XDP attach, traffic generation, map teardown \u2014 is performed by the attacker\u0027s own process with no action by any other user.\nS:U - The type confusion and the resulting memory damage stay within the kernel\u0027s own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - With the bogus HAS_FRAGS bit set, `xdp_get_shared_info_from_frame()` dereferences an address computed from misread sk_buff fields, producing an unbounded out-of-bounds read of kernel memory that is then interpreted as page pointers \u2014 an information-disclosure primitive on top of the type confusion.\nI:H - Treating an sk_buff as an xdp_frame is a type confusion in which garbage `mem.type`/`data` values steer `page_pool_put_full_page()`, `page_frag_free()`, or `put_page()` at attacker-influenced addresses, giving page-refcount corruption and premature frees that are leverageable into a write primitive.\nA:H - The path reliably produces a `WARN()` splat (a panic under the common `panic_on_warn` setting), can oops on wild dereferences or unaligned 64-bit loads, and leaks the skb and its data on every occurrence."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T09:15:24.367Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/b58d34068fd9f96bfc7d389988dfaf9a92a8fe00"
        },
        {
          "url": "https://git.kernel.org/stable/c/cbd000451885801e9bbfd9cf7a7946806a85cb5e"
        },
        {
          "url": "https://git.kernel.org/stable/c/937345720d18f1ad006ba3d5dcb3fa121037b8a2"
        },
        {
          "url": "https://git.kernel.org/stable/c/7c62b75cd1a792e14b037fa4f61f9b18914e7de1"
        }
      ],
      "title": "bpf, cpumap: Handle skb as well when clean up ptr_ring",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53660",
    "datePublished": "2025-10-07T15:21:20.307Z",
    "dateReserved": "2025-10-07T15:16:59.662Z",
    "dateUpdated": "2026-08-05T09:15:24.367Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}