{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-22033",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2025-22033"
  ],
  "published": "2025-04-16T14:14:59Z",
  "summary": "arm64: Don't call NULL in do_compat_alignment_fixup()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64: Don't call NULL in do_compat_alignment_fixup()\n\ndo_alignment_t32_to_handler() only fixes up alignment faults for\nspecific instructions; it returns NULL otherwise (e.g. LDREX). When\nthat's the case, signal to the caller that it needs to proceed with the\nregular alignment fault handling (i.e. SIGBUS). Without this patch, the\nkernel panics:\n\n  Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000\n  Mem abort info:\n    ESR = 0x0000000086000006\n    EC = 0x21: IABT (current EL), IL = 32 bits\n    SET = 0, FnV = 0\n    EA = 0, S1PTW = 0\n    FSC = 0x06: level 2 translation fault\n  user pgtable: 4k pages, 48-bit VAs, pgdp=00000800164aa000\n  [0000000000000000] pgd=0800081fdbd22003, p4d=0800081fdbd22003, pud=08000815d51c6003, pmd=0000000000000000\n  Internal error: Oops: 0000000086000006 [#1] SMP\n  Modules linked in: cfg80211 rfkill xt_nat xt_tcpudp xt_conntrack nft_chain_nat xt_MASQUERADE nf_nat nf_conntrack_netlink nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xfrm_user xfrm_algo xt_addrtype nft_compat br_netfilter veth nvme_fa>\n   libcrc32c crc32c_generic raid0 multipath linear dm_mod dax raid1 md_mod xhci_pci nvme xhci_hcd nvme_core t10_pi usbcore igb crc64_rocksoft crc64 crc_t10dif crct10dif_generic crct10dif_ce crct10dif_common usb_common i2c_algo_bit i2c>\n  CPU: 2 PID: 3932954 Comm: WPEWebProcess Not tainted 6.1.0-31-arm64 #1  Debian 6.1.128-1\n  Hardware name: GIGABYTE MP32-AR1-00/MP32-AR1-00, BIOS F18v (SCP: 1.08.20211002) 12/01/2021\n  pstate: 80400009 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n  pc : 0x0\n  lr : do_compat_alignment_fixup+0xd8/0x3dc\n  sp : ffff80000f973dd0\n  x29: ffff80000f973dd0 x28: ffff081b42526180 x27: 0000000000000000\n  x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000\n  x23: 0000000000000004 x22: 0000000000000000 x21: 0000000000000001\n  x20: 00000000e8551f00 x19: ffff80000f973eb0 x18: 0000000000000000\n  x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000\n  x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000\n  x11: 0000000000000000 x10: 0000000000000000 x9 : ffffaebc949bc488\n  x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000\n  x5 : 0000000000400000 x4 : 0000fffffffffffe x3 : 0000000000000000\n  x2 : ffff80000f973eb0 x1 : 00000000e8551f00 x0 : 0000000000000001\n  Call trace:\n   0x0\n   do_alignment_fault+0x40/0x50\n   do_mem_abort+0x4c/0xa0\n   el0_da+0x48/0xf0\n   el0t_32_sync_handler+0x110/0x140\n   el0t_32_sync+0x190/0x194\n  Code: bad PC value\n  ---[ end trace 0000000000000000 ]---",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.134",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-22033"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/cf187601053ecaf671ae645edb898901f81d03e9"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/617a4b0084a547917669fef2b54253cc9c064990"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2df8ee605eb6806cd41c2095306db05206633a08"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/fa2a9f625f185c6acb4ee5be8d71359a567afac9"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ecf798573bbe0805803f7764e12a34b4bcc65074"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c28f31deeacda307acfee2f18c0ad904e5123aac"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}