{
  "cveId": "CVE-2025-40225",
  "url": "https://patchblox.com/security/cve/CVE-2025-40225",
  "summary": "CVE-2025-40225 is fixed in 18 products on 1 platform, first by DEBIAN-CVE-2025-40225, released December 4, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  drm/panthor: Fix kernel panic on partial unmap o...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  drm/panthor: Fix kernel panic on partial unmap of a GPU VA region  This commit address a kernel panic issue that can happen if Userspace tries to partially unmap a GPU virtual region (aka drm_gpuva). The VM_BIND interface allows partial unmapping of a BO.  Panthor driver pre-allocates memory for the new drm_gpuva structures that would be needed for the map/unmap operation, done using drm_gpuvm layer. It expected that only one new drm_gpuva would be needed on umap but a partial unmap can require 2 new drm_gpuva and that\u0027s why it ended up doing a NULL pointer dereference causing a kernel panic.  Following dump was seen when partial unmap was exercised.  Unable to handle kernel NULL pointer dereference at virtual address 0000000000000078  Mem abort info:    ESR = 0x0000000096000046    EC = 0x25: DABT (current EL), IL = 32 bits    SET = 0, FnV = 0    EA = 0, S1PTW = 0    FSC = 0x06: level 2 translation fault  Data abort info:    ISV = 0, ISS = 0x00000046, ISS2 = 0x00000000    CM = 0, WnR = 1, TnD = 0, TagAccess = 0    GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0  user pgtable: 4k pages, 48-bit VAs, pgdp=000000088a863000  [000000000000078] pgd=080000088a842003, p4d=080000088a842003, pud=0800000884bf5003, pmd=0000000000000000  Internal error: Oops: 0000000096000046 [#1] PREEMPT SMP  \u003Csnip\u003E  pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)  pc : panthor_gpuva_sm_step_remap\u002B0xe4/0x330 [panthor]  lr : panthor_gpuva_sm_step_remap\u002B0x6c/0x330 [panthor]  sp : ffff800085d43970  x29: ffff800085d43970 x28: ffff00080363e440 x27: ffff0008090c6000  x26: 0000000000000030 x25: ffff800085d439f8 x24: ffff00080d402000  x23: ffff800085d43b60 x22: ffff800085d439e0 x21: ffff00080abdb180  x20: 0000000000000000 x19: 0000000000000000 x18: 0000000000000010  x17: 6e656c202c303030 x16: 3666666666646466 x15: 393d61766f69202c  x14: 312d3d7361203a70 x13: 303030323d6e656c x12: ffff80008324bf58  x11: 0000000000000003 x10: 0000000000000002 x9 : ffff8000801a6a9c  x8 : ffff00080360b300 x7 : 0000000000000000 x6 : 000000088aa35fc7  x5 : fff1000080000000 x4 : ffff8000842ddd30 x3 : 0000000000000001  x2 : 0000000100000000 x1 : 0000000000000001 x0 : 0000000000000078  Call trace:   panthor_gpuva_sm_step_remap\u002B0xe4/0x330 [panthor]   op_remap_cb.isra.22\u002B0x50/0x80   __drm_gpuvm_sm_unmap\u002B0x10c/0x1c8   drm_gpuvm_sm_unmap\u002B0x40/0x60   panthor_vm_exec_op\u002B0xb4/0x3d0 [panthor]   panthor_vm_bind_exec_sync_op\u002B0x154/0x278 [panthor]   panthor_ioctl_vm_bind\u002B0x160/0x4a0 [panthor]   drm_ioctl_kernel\u002B0xbc/0x138   drm_ioctl\u002B0x240/0x500   __arm64_sys_ioctl\u002B0xb0/0xf8   invoke_syscall\u002B0x4c/0x110   el0_svc_common.constprop.1\u002B0x98/0xf8   do_el0_svc\u002B0x24/0x38   el0_svc\u002B0x40/0xf8   el0t_64_sync_handler\u002B0xa0/0xc8   el0t_64_sync\u002B0x174/0x178",
  "published": "2025-12-04T16:16:15Z",
  "severity": "",
  "epss": 0.00259,
  "epssPercentile": 0.1769,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "dtb-aarch64",
      "release": "opensuse-leap 16.0",
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      "fix": "OPENSUSE-SU-2026:20145-1",
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      "released": "2026-02-02T11:54:26Z"
    },
    {
      "platform": "linux",
      "product": "kernel-64kb",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "OPENSUSE-SU-2026:20145-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20145-1",
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    },
    {
      "platform": "linux",
      "product": "kernel-64kb",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.53.28.1",
      "fix": "SUSE-SU-2026:0315-1",
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      "released": "2026-01-28T14:34:30Z"
    },
    {
      "platform": "linux",
      "product": "kernel-64kb",
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    },
    {
      "platform": "linux",
      "product": "kernel-azure",
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    },
    {
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      "product": "kernel-azure",
      "release": "sles 15.7",
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      "released": "2026-01-23T16:03:47Z"
    },
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      "release": "opensuse-leap 16.0",
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      "release": "opensuse-leap 16.0",
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      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
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      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20145-1",
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      "platform": "linux",
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      "release": "sles 15.7",
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    {
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      "product": "kernel-obs-qa",
      "release": "opensuse-leap 16.0",
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      "product": "kernel-source",
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      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
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    {
      "platform": "linux",
      "product": "kernel-syms",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
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      "release": "sles 15.7",
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      "fix": "SUSE-SU-2026:0281-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0281-1",
      "released": "2026-01-23T16:03:47Z"
    },
    {
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      "product": "kernel-zfcpdump",
      "release": "opensuse-leap 16.0",
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      "fix": "OPENSUSE-SU-2026:20145-1",
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      "product": "kernel-zfcpdump",
      "release": "sles 15.7",
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      "fix": "SUSE-SU-2026:0315-1",
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    {
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      "released": "2025-12-04T16:16:15Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}