CVE-2022-50884 (GCVE-0-2022-50884)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:34 – Updated: 2025-12-30 12:34
VLAI?
Title
drm: Prevent drm_copy_field() to attempt copying a NULL pointer
Summary
In the Linux kernel, the following vulnerability has been resolved: drm: Prevent drm_copy_field() to attempt copying a NULL pointer There are some struct drm_driver fields that are required by drivers since drm_copy_field() attempts to copy them to user-space via DRM_IOCTL_VERSION. But it can be possible that a driver has a bug and did not set some of the fields, which leads to drm_copy_field() attempting to copy a NULL pointer: [ +10.395966] Unable to handle kernel access to user memory outside uaccess routines at virtual address 0000000000000000 [ +0.010955] Mem abort info: [ +0.002835] ESR = 0x0000000096000004 [ +0.003872] EC = 0x25: DABT (current EL), IL = 32 bits [ +0.005395] SET = 0, FnV = 0 [ +0.003113] EA = 0, S1PTW = 0 [ +0.003182] FSC = 0x04: level 0 translation fault [ +0.004964] Data abort info: [ +0.002919] ISV = 0, ISS = 0x00000004 [ +0.003886] CM = 0, WnR = 0 [ +0.003040] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000115dad000 [ +0.006536] [0000000000000000] pgd=0000000000000000, p4d=0000000000000000 [ +0.006925] Internal error: Oops: 96000004 [#1] SMP ... [ +0.011113] pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ +0.007061] pc : __pi_strlen+0x14/0x150 [ +0.003895] lr : drm_copy_field+0x30/0x1a4 [ +0.004156] sp : ffff8000094b3a50 [ +0.003355] x29: ffff8000094b3a50 x28: ffff8000094b3b70 x27: 0000000000000040 [ +0.007242] x26: ffff443743c2ba00 x25: 0000000000000000 x24: 0000000000000040 [ +0.007243] x23: ffff443743c2ba00 x22: ffff8000094b3b70 x21: 0000000000000000 [ +0.007241] x20: 0000000000000000 x19: ffff8000094b3b90 x18: 0000000000000000 [ +0.007241] x17: 0000000000000000 x16: 0000000000000000 x15: 0000aaab14b9af40 [ +0.007241] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 [ +0.007239] x11: 0000000000000000 x10: 0000000000000000 x9 : ffffa524ad67d4d8 [ +0.007242] x8 : 0101010101010101 x7 : 7f7f7f7f7f7f7f7f x6 : 6c6e6263606e7141 [ +0.007239] x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000 [ +0.007241] x2 : 0000000000000000 x1 : ffff8000094b3b90 x0 : 0000000000000000 [ +0.007240] Call trace: [ +0.002475] __pi_strlen+0x14/0x150 [ +0.003537] drm_version+0x84/0xac [ +0.003448] drm_ioctl_kernel+0xa8/0x16c [ +0.003975] drm_ioctl+0x270/0x580 [ +0.003448] __arm64_sys_ioctl+0xb8/0xfc [ +0.003978] invoke_syscall+0x78/0x100 [ +0.003799] el0_svc_common.constprop.0+0x4c/0xf4 [ +0.004767] do_el0_svc+0x38/0x4c [ +0.003357] el0_svc+0x34/0x100 [ +0.003185] el0t_64_sync_handler+0x11c/0x150 [ +0.004418] el0t_64_sync+0x190/0x194 [ +0.003716] Code: 92402c04 b200c3e8 f13fc09f 5400088c (a9400c02) [ +0.006180] ---[ end trace 0000000000000000 ]---
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d213914386a0ede76a4549b41de30192fb92c595 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ee9885cd936aad88f84d0cf90bf9a70e83e42a97 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8052612b9d08048ebbebcb572894670b4ac07d2f (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < cdde55f97298e5bb9af6d41c9303a3ec545a370e (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c28a8082b25ce4ec94999e10a30c50d20bd44a25 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ca163e389f0ae096a4e1e19f0a95e60ed80b4e31 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 2d6708ea5c2033ff53267feff1876a717689989f (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 6cf5e9356b2d856403ee480f987f3ea64dbf8d8c (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f6ee30407e883042482ad4ad30da5eaba47872ee (git)
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    Linux Linux Unaffected: 4.9.331 , ≤ 4.9.* (semver)
Unaffected: 4.14.296 , ≤ 4.14.* (semver)
Unaffected: 4.19.262 , ≤ 4.19.* (semver)
Unaffected: 5.4.220 , ≤ 5.4.* (semver)
Unaffected: 5.10.150 , ≤ 5.10.* (semver)
Unaffected: 5.15.75 , ≤ 5.15.* (semver)
Unaffected: 5.19.17 , ≤ 5.19.* (semver)
Unaffected: 6.0.3 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/drm_ioctl.c"
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          "programFiles": [
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          "vendor": "Linux",
          "versions": [
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              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
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              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
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              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.262",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.220",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.150",
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              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
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              "status": "unaffected",
              "version": "5.19.17",
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              "version": "6.0.3",
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              "version": "6.1",
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            }
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      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm: Prevent drm_copy_field() to attempt copying a NULL pointer\n\nThere are some struct drm_driver fields that are required by drivers since\ndrm_copy_field() attempts to copy them to user-space via DRM_IOCTL_VERSION.\n\nBut it can be possible that a driver has a bug and did not set some of the\nfields, which leads to drm_copy_field() attempting to copy a NULL pointer:\n\n[ +10.395966] Unable to handle kernel access to user memory outside uaccess routines at virtual address 0000000000000000\n[  +0.010955] Mem abort info:\n[  +0.002835]   ESR = 0x0000000096000004\n[  +0.003872]   EC = 0x25: DABT (current EL), IL = 32 bits\n[  +0.005395]   SET = 0, FnV = 0\n[  +0.003113]   EA = 0, S1PTW = 0\n[  +0.003182]   FSC = 0x04: level 0 translation fault\n[  +0.004964] Data abort info:\n[  +0.002919]   ISV = 0, ISS = 0x00000004\n[  +0.003886]   CM = 0, WnR = 0\n[  +0.003040] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000115dad000\n[  +0.006536] [0000000000000000] pgd=0000000000000000, p4d=0000000000000000\n[  +0.006925] Internal error: Oops: 96000004 [#1] SMP\n...\n[  +0.011113] pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[  +0.007061] pc : __pi_strlen+0x14/0x150\n[  +0.003895] lr : drm_copy_field+0x30/0x1a4\n[  +0.004156] sp : ffff8000094b3a50\n[  +0.003355] x29: ffff8000094b3a50 x28: ffff8000094b3b70 x27: 0000000000000040\n[  +0.007242] x26: ffff443743c2ba00 x25: 0000000000000000 x24: 0000000000000040\n[  +0.007243] x23: ffff443743c2ba00 x22: ffff8000094b3b70 x21: 0000000000000000\n[  +0.007241] x20: 0000000000000000 x19: ffff8000094b3b90 x18: 0000000000000000\n[  +0.007241] x17: 0000000000000000 x16: 0000000000000000 x15: 0000aaab14b9af40\n[  +0.007241] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000\n[  +0.007239] x11: 0000000000000000 x10: 0000000000000000 x9 : ffffa524ad67d4d8\n[  +0.007242] x8 : 0101010101010101 x7 : 7f7f7f7f7f7f7f7f x6 : 6c6e6263606e7141\n[  +0.007239] x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000\n[  +0.007241] x2 : 0000000000000000 x1 : ffff8000094b3b90 x0 : 0000000000000000\n[  +0.007240] Call trace:\n[  +0.002475]  __pi_strlen+0x14/0x150\n[  +0.003537]  drm_version+0x84/0xac\n[  +0.003448]  drm_ioctl_kernel+0xa8/0x16c\n[  +0.003975]  drm_ioctl+0x270/0x580\n[  +0.003448]  __arm64_sys_ioctl+0xb8/0xfc\n[  +0.003978]  invoke_syscall+0x78/0x100\n[  +0.003799]  el0_svc_common.constprop.0+0x4c/0xf4\n[  +0.004767]  do_el0_svc+0x38/0x4c\n[  +0.003357]  el0_svc+0x34/0x100\n[  +0.003185]  el0t_64_sync_handler+0x11c/0x150\n[  +0.004418]  el0t_64_sync+0x190/0x194\n[  +0.003716] Code: 92402c04 b200c3e8 f13fc09f 5400088c (a9400c02)\n[  +0.006180] ---[ end trace 0000000000000000 ]---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-30T12:34:11.390Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d213914386a0ede76a4549b41de30192fb92c595"
        },
        {
          "url": "https://git.kernel.org/stable/c/ee9885cd936aad88f84d0cf90bf9a70e83e42a97"
        },
        {
          "url": "https://git.kernel.org/stable/c/8052612b9d08048ebbebcb572894670b4ac07d2f"
        },
        {
          "url": "https://git.kernel.org/stable/c/cdde55f97298e5bb9af6d41c9303a3ec545a370e"
        },
        {
          "url": "https://git.kernel.org/stable/c/c28a8082b25ce4ec94999e10a30c50d20bd44a25"
        },
        {
          "url": "https://git.kernel.org/stable/c/ca163e389f0ae096a4e1e19f0a95e60ed80b4e31"
        },
        {
          "url": "https://git.kernel.org/stable/c/2d6708ea5c2033ff53267feff1876a717689989f"
        },
        {
          "url": "https://git.kernel.org/stable/c/6cf5e9356b2d856403ee480f987f3ea64dbf8d8c"
        },
        {
          "url": "https://git.kernel.org/stable/c/f6ee30407e883042482ad4ad30da5eaba47872ee"
        }
      ],
      "title": "drm: Prevent drm_copy_field() to attempt copying a NULL pointer",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50884",
    "datePublished": "2025-12-30T12:34:11.390Z",
    "dateReserved": "2025-12-30T12:26:05.425Z",
    "dateUpdated": "2025-12-30T12:34:11.390Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50884\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-30T13:16:03.493\",\"lastModified\":\"2025-12-30T13:16:03.493\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm: Prevent drm_copy_field() to attempt copying a NULL pointer\\n\\nThere are some struct drm_driver fields that are required by drivers since\\ndrm_copy_field() attempts to copy them to user-space via DRM_IOCTL_VERSION.\\n\\nBut it can be possible that a driver has a bug and did not set some of the\\nfields, which leads to drm_copy_field() attempting to copy a NULL pointer:\\n\\n[ +10.395966] Unable to handle kernel access to user memory outside uaccess routines at virtual address 0000000000000000\\n[  +0.010955] Mem abort info:\\n[  +0.002835]   ESR = 0x0000000096000004\\n[  +0.003872]   EC = 0x25: DABT (current EL), IL = 32 bits\\n[  +0.005395]   SET = 0, FnV = 0\\n[  +0.003113]   EA = 0, S1PTW = 0\\n[  +0.003182]   FSC = 0x04: level 0 translation fault\\n[  +0.004964] Data abort info:\\n[  +0.002919]   ISV = 0, ISS = 0x00000004\\n[  +0.003886]   CM = 0, WnR = 0\\n[  +0.003040] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000115dad000\\n[  +0.006536] [0000000000000000] pgd=0000000000000000, p4d=0000000000000000\\n[  +0.006925] Internal error: Oops: 96000004 [#1] SMP\\n...\\n[  +0.011113] pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\\n[  +0.007061] pc : __pi_strlen+0x14/0x150\\n[  +0.003895] lr : drm_copy_field+0x30/0x1a4\\n[  +0.004156] sp : ffff8000094b3a50\\n[  +0.003355] x29: ffff8000094b3a50 x28: ffff8000094b3b70 x27: 0000000000000040\\n[  +0.007242] x26: ffff443743c2ba00 x25: 0000000000000000 x24: 0000000000000040\\n[  +0.007243] x23: ffff443743c2ba00 x22: ffff8000094b3b70 x21: 0000000000000000\\n[  +0.007241] x20: 0000000000000000 x19: ffff8000094b3b90 x18: 0000000000000000\\n[  +0.007241] x17: 0000000000000000 x16: 0000000000000000 x15: 0000aaab14b9af40\\n[  +0.007241] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000\\n[  +0.007239] x11: 0000000000000000 x10: 0000000000000000 x9 : ffffa524ad67d4d8\\n[  +0.007242] x8 : 0101010101010101 x7 : 7f7f7f7f7f7f7f7f x6 : 6c6e6263606e7141\\n[  +0.007239] x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000\\n[  +0.007241] x2 : 0000000000000000 x1 : ffff8000094b3b90 x0 : 0000000000000000\\n[  +0.007240] Call trace:\\n[  +0.002475]  __pi_strlen+0x14/0x150\\n[  +0.003537]  drm_version+0x84/0xac\\n[  +0.003448]  drm_ioctl_kernel+0xa8/0x16c\\n[  +0.003975]  drm_ioctl+0x270/0x580\\n[  +0.003448]  __arm64_sys_ioctl+0xb8/0xfc\\n[  +0.003978]  invoke_syscall+0x78/0x100\\n[  +0.003799]  el0_svc_common.constprop.0+0x4c/0xf4\\n[  +0.004767]  do_el0_svc+0x38/0x4c\\n[  +0.003357]  el0_svc+0x34/0x100\\n[  +0.003185]  el0t_64_sync_handler+0x11c/0x150\\n[  +0.004418]  el0t_64_sync+0x190/0x194\\n[  +0.003716] Code: 92402c04 b200c3e8 f13fc09f 5400088c (a9400c02)\\n[  +0.006180] ---[ end trace 0000000000000000 ]---\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2d6708ea5c2033ff53267feff1876a717689989f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6cf5e9356b2d856403ee480f987f3ea64dbf8d8c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8052612b9d08048ebbebcb572894670b4ac07d2f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c28a8082b25ce4ec94999e10a30c50d20bd44a25\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ca163e389f0ae096a4e1e19f0a95e60ed80b4e31\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cdde55f97298e5bb9af6d41c9303a3ec545a370e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d213914386a0ede76a4549b41de30192fb92c595\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ee9885cd936aad88f84d0cf90bf9a70e83e42a97\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f6ee30407e883042482ad4ad30da5eaba47872ee\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.