{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-74335",
  "modified": "2026-10-07T14:35:31Z",
  "upstream": [
    "CVE-2026-74335"
  ],
  "published": "2026-08-15T06:04:33Z",
  "summary": "bpf: Fix NULL pointer dereference in bpf_task_from_vpid()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix NULL pointer dereference in bpf_task_from_vpid()\n\nbpf_task_from_vpid() looks up a task in the pid namespace of the\ncurrent task, via find_task_by_vpid():\n\n  find_task_by_vpid(vpid)\n    find_task_by_pid_ns(vpid, task_active_pid_ns(current))\n      find_pid_ns(nr, ns) -> idr_find(&ns->idr, nr)\n\ncgroup_skb programs run in softirq, which may interrupt a task that is\nitself in do_exit(). Once that task has passed\nexit_notify() -> release_task() -> __unhash_process(), its thread_pid is\ncleared, so task_active_pid_ns(current) returns NULL and find_pid_ns()\ndereferences &NULL->idr:\n\n  BUG: kernel NULL pointer dereference, address: 0000000000000050\n  RIP: 0010:idr_find+0x11/0x30 lib/idr.c:176\n  Call Trace:\n   <IRQ>\n   find_pid_ns kernel/pid.c:370 [inline]\n   find_task_by_pid_ns+0x3b/0xe0 kernel/pid.c:485\n   bpf_task_from_vpid+0x5b/0x200 kernel/bpf/helpers.c:2916\n   bpf_prog_run_array_cg+0x17e/0x530 kernel/bpf/cgroup.c:81\n   __cgroup_bpf_run_filter_skb+0x12b/0x250 kernel/bpf/cgroup.c:1612\n   sk_filter_trim_cap+0x1dc/0x4c0 net/core/filter.c:148\n   tcp_v4_rcv+0x18d1/0x2200 net/ipv4/tcp_ipv4.c:2223\n   </IRQ>\n   <TASK>\n   do_exit+0xa63/0x1270 kernel/exit.c:1010\n   get_signal+0x141c/0x1530 kernel/signal.c:3037\n\nBail out when current has no pid namespace.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:13",
        "name": "linux"
      },
      "versions": [
        "1:6.18.29-1+rpt1",
        "1:6.18.33-1+rpt1",
        "1:6.18.34-1+rpt1",
        "1:6.18.39-1+rpt1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.18.29+rpt-rpi-2712",
            "binary_version": "1:6.18.29-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.18.29+rpt-rpi-v6",
            "binary_version": "1:6.18.29-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.18.29+rpt-rpi-v7",
            "binary_version": "1:6.18.29-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.18.29+rpt-rpi-v8",
            "binary_version": "1:6.18.29-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.18.29+rpt-rpi-v8-rt",
            "binary_version": "1:6.18.29-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.18.33+rpt-rpi-2712",
            "binary_version": "1:6.18.33-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.18.33+rpt-rpi-v6",
            "binary_version": "1:6.18.33-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.18.33+rpt-rpi-v7",
            "binary_version": "1:6.18.33-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.18.33+rpt-rpi-v8",
            "binary_version": "1:6.18.33-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.18.33+rpt-rpi-v8-rt",
            "binary_version": "1:6.18.33-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.18.34+rpt-rpi-2712",
            "binary_version": "1:6.18.34-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.18.34+rpt-rpi-v6",
            "binary_version": "1:6.18.34-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.18.34+rpt-rpi-v7",
            "binary_version": "1:6.18.34-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.18.34+rpt-rpi-v8",
            "binary_version": "1:6.18.34-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.18.34+rpt-rpi-v8-rt",
            "binary_version": "1:6.18.34-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.18.39+rpt-rpi-2712",
            "binary_version": "1:6.18.39-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.18.39+rpt-rpi-v6",
            "binary_version": "1:6.18.39-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.18.39+rpt-rpi-v7",
            "binary_version": "1:6.18.39-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.18.39+rpt-rpi-v8",
            "binary_version": "1:6.18.39-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.18.39+rpt-rpi-v8-rt",
            "binary_version": "1:6.18.39-1+rpt1"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.18.29-1+rpt1": {
            "linux_commit": "66318c5b5cd8145a662303af12ed39ac07eb27cc",
            "upstream_version": "6.18.29",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.18.40"
          },
          "1:6.18.33-1+rpt1": {
            "linux_commit": "95b85bebbedcaedfa7ca79116ed38b7376fba412",
            "upstream_version": "6.18.33",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.18.40"
          },
          "1:6.18.34-1+rpt1": {
            "linux_commit": "c8c7494100e99ee05b11aaa4f0588a223a63d1af",
            "upstream_version": "6.18.34",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.18.40"
          },
          "1:6.18.39-1+rpt1": {
            "linux_commit": "60ea684a8ace97bb0db1a16e20753bdd6ab371ff",
            "upstream_version": "6.18.39",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.18.40"
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-74335"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b7474f4432dd9559ada03b01a8cd3472cd02c61d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a4c95b6221cb2972a94ed72663c09bd5b0b6dea4"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/50dff00615522f3ec03449680ca23beb4cfc549c"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-17T05:24:08Z"
  }
}