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CVE-2022-49496 (GCVE-0-2022-49496)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:13 – Updated: 2026-08-15 12:22
VLAI
Title
media: mediatek: vcodec: prevent kernel crash when rmmod mtk-vcodec-dec.ko
Summary
In the Linux kernel, the following vulnerability has been resolved: media: mediatek: vcodec: prevent kernel crash when rmmod mtk-vcodec-dec.ko If the driver support subdev mode, the parameter "dev->pm.dev" will be NULL in mtk_vcodec_dec_remove. Kernel will crash when try to rmmod mtk-vcodec-dec.ko. [ 4380.702726] pc : do_raw_spin_trylock+0x4/0x80 [ 4380.707075] lr : _raw_spin_lock_irq+0x90/0x14c [ 4380.711509] sp : ffff80000819bc10 [ 4380.714811] x29: ffff80000819bc10 x28: ffff3600c03e4000 x27: 0000000000000000 [ 4380.721934] x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000 [ 4380.729057] x23: ffff3600c0f34930 x22: ffffd5e923549000 x21: 0000000000000220 [ 4380.736179] x20: 0000000000000208 x19: ffffd5e9213e8ebc x18: 0000000000000020 [ 4380.743298] x17: 0000002000000000 x16: ffffd5e9213e8e90 x15: 696c346f65646976 [ 4380.750420] x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000040 [ 4380.757542] x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000 [ 4380.764664] x8 : 0000000000000000 x7 : ffff3600c7273ae8 x6 : ffffd5e9213e8ebc [ 4380.771786] x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 [ 4380.778908] x2 : 0000000000000000 x1 : ffff3600c03e4000 x0 : 0000000000000208 [ 4380.786031] Call trace: [ 4380.788465] do_raw_spin_trylock+0x4/0x80 [ 4380.792462] __pm_runtime_disable+0x2c/0x1b0 [ 4380.796723] mtk_vcodec_dec_remove+0x5c/0xa0 [mtk_vcodec_dec] [ 4380.802466] platform_remove+0x2c/0x60 [ 4380.806204] __device_release_driver+0x194/0x250 [ 4380.810810] driver_detach+0xc8/0x15c [ 4380.814462] bus_remove_driver+0x5c/0xb0 [ 4380.818375] driver_unregister+0x34/0x64 [ 4380.822288] platform_driver_unregister+0x18/0x24 [ 4380.826979] mtk_vcodec_dec_driver_exit+0x1c/0x888 [mtk_vcodec_dec] [ 4380.833240] __arm64_sys_delete_module+0x190/0x224 [ 4380.838020] invoke_syscall+0x48/0x114 [ 4380.841760] el0_svc_common.constprop.0+0x60/0x11c [ 4380.846540] do_el0_svc+0x28/0x90 [ 4380.849844] el0_svc+0x4c/0x100 [ 4380.852975] el0t_64_sync_handler+0xec/0xf0 [ 4380.857148] el0t_64_sync+0x190/0x194 [ 4380.860801] Code: 94431515 17ffffca d503201f d503245f (b9400004)
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:38 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: c05bada35f015fb735a9c3830226ccbe2b05008f , < 1fa37b00dc55a061a3eb82e378849862b4aeca9d (git)
Affected: c05bada35f015fb735a9c3830226ccbe2b05008f , < c10c0086db688c95bb4e0e378e523818dff1551d (git)
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Linux Linux Affected: 5.18
Unaffected: 0 , < 5.18 (semver)
Unaffected: 5.18.3 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
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              "content": {
                "id": "CVE-2022-49496",
                "options": [
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                    "Exploitation": "none"
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                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T19:38:46.175575Z",
                "version": "2.0.3"
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                "description": "CWE-667 Improper Locking",
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                "type": "CWE"
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        "providerMetadata": {
          "dateUpdated": "2025-10-01T19:46:43.564Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_drv.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "1fa37b00dc55a061a3eb82e378849862b4aeca9d",
              "status": "affected",
              "version": "c05bada35f015fb735a9c3830226ccbe2b05008f",
              "versionType": "git"
            },
            {
              "lessThan": "c10c0086db688c95bb4e0e378e523818dff1551d",
              "status": "affected",
              "version": "c05bada35f015fb735a9c3830226ccbe2b05008f",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_drv.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.18"
            },
            {
              "lessThan": "5.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.18.*",
              "status": "unaffected",
              "version": "5.18.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.18.3",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: mediatek: vcodec: prevent kernel crash when rmmod mtk-vcodec-dec.ko\n\nIf the driver support subdev mode, the parameter \"dev-\u003epm.dev\" will be\nNULL in mtk_vcodec_dec_remove. Kernel will crash when try to rmmod\nmtk-vcodec-dec.ko.\n\n[ 4380.702726] pc : do_raw_spin_trylock+0x4/0x80\n[ 4380.707075] lr : _raw_spin_lock_irq+0x90/0x14c\n[ 4380.711509] sp : ffff80000819bc10\n[ 4380.714811] x29: ffff80000819bc10 x28: ffff3600c03e4000 x27: 0000000000000000\n[ 4380.721934] x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000\n[ 4380.729057] x23: ffff3600c0f34930 x22: ffffd5e923549000 x21: 0000000000000220\n[ 4380.736179] x20: 0000000000000208 x19: ffffd5e9213e8ebc x18: 0000000000000020\n[ 4380.743298] x17: 0000002000000000 x16: ffffd5e9213e8e90 x15: 696c346f65646976\n[ 4380.750420] x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000040\n[ 4380.757542] x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000\n[ 4380.764664] x8 : 0000000000000000 x7 : ffff3600c7273ae8 x6 : ffffd5e9213e8ebc\n[ 4380.771786] x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000\n[ 4380.778908] x2 : 0000000000000000 x1 : ffff3600c03e4000 x0 : 0000000000000208\n[ 4380.786031] Call trace:\n[ 4380.788465]  do_raw_spin_trylock+0x4/0x80\n[ 4380.792462]  __pm_runtime_disable+0x2c/0x1b0\n[ 4380.796723]  mtk_vcodec_dec_remove+0x5c/0xa0 [mtk_vcodec_dec]\n[ 4380.802466]  platform_remove+0x2c/0x60\n[ 4380.806204]  __device_release_driver+0x194/0x250\n[ 4380.810810]  driver_detach+0xc8/0x15c\n[ 4380.814462]  bus_remove_driver+0x5c/0xb0\n[ 4380.818375]  driver_unregister+0x34/0x64\n[ 4380.822288]  platform_driver_unregister+0x18/0x24\n[ 4380.826979]  mtk_vcodec_dec_driver_exit+0x1c/0x888 [mtk_vcodec_dec]\n[ 4380.833240]  __arm64_sys_delete_module+0x190/0x224\n[ 4380.838020]  invoke_syscall+0x48/0x114\n[ 4380.841760]  el0_svc_common.constprop.0+0x60/0x11c\n[ 4380.846540]  do_el0_svc+0x28/0x90\n[ 4380.849844]  el0_svc+0x4c/0x100\n[ 4380.852975]  el0t_64_sync_handler+0xec/0xf0\n[ 4380.857148]  el0t_64_sync+0x190/0x194\n[ 4380.860801] Code: 94431515 17ffffca d503201f d503245f (b9400004)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-15T12:22:44.706Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/1fa37b00dc55a061a3eb82e378849862b4aeca9d"
        },
        {
          "url": "https://git.kernel.org/stable/c/c10c0086db688c95bb4e0e378e523818dff1551d"
        }
      ],
      "title": "media: mediatek: vcodec: prevent kernel crash when rmmod mtk-vcodec-dec.ko",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49496",
    "datePublished": "2025-02-26T02:13:31.528Z",
    "dateReserved": "2025-02-26T02:08:31.586Z",
    "dateUpdated": "2026-08-15T12:22:44.706Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-49496",
      "date": "2026-09-17",
      "epss": "0.00165",
      "percentile": "0.06161"
    },
    "microsoft_vex": {
      "current_release_date": "2026-02-18T14:52:39.000Z",
      "cve": "CVE-2022-49496",
      "id": "msrc_CVE-2022-49496",
      "initial_release_date": "2025-02-02T00:00:00.000Z",
      "product_status:known_not_affected": "2",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "media: mediatek: vcodec: prevent kernel crash when rmmod mtk-vcodec-dec.ko",
      "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2022-49496.json",
      "version": "2"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49496\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-26T07:01:25.800\",\"lastModified\":\"2026-08-15T13:17:21.933\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmedia: mediatek: vcodec: prevent kernel crash when rmmod mtk-vcodec-dec.ko\\n\\nIf the driver support subdev mode, the parameter \\\"dev-\u003epm.dev\\\" will be\\nNULL in mtk_vcodec_dec_remove. Kernel will crash when try to rmmod\\nmtk-vcodec-dec.ko.\\n\\n[ 4380.702726] pc : do_raw_spin_trylock+0x4/0x80\\n[ 4380.707075] lr : _raw_spin_lock_irq+0x90/0x14c\\n[ 4380.711509] sp : ffff80000819bc10\\n[ 4380.714811] x29: ffff80000819bc10 x28: ffff3600c03e4000 x27: 0000000000000000\\n[ 4380.721934] x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000\\n[ 4380.729057] x23: ffff3600c0f34930 x22: ffffd5e923549000 x21: 0000000000000220\\n[ 4380.736179] x20: 0000000000000208 x19: ffffd5e9213e8ebc x18: 0000000000000020\\n[ 4380.743298] x17: 0000002000000000 x16: ffffd5e9213e8e90 x15: 696c346f65646976\\n[ 4380.750420] x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000040\\n[ 4380.757542] x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000\\n[ 4380.764664] x8 : 0000000000000000 x7 : ffff3600c7273ae8 x6 : ffffd5e9213e8ebc\\n[ 4380.771786] x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000\\n[ 4380.778908] x2 : 0000000000000000 x1 : ffff3600c03e4000 x0 : 0000000000000208\\n[ 4380.786031] Call trace:\\n[ 4380.788465]  do_raw_spin_trylock+0x4/0x80\\n[ 4380.792462]  __pm_runtime_disable+0x2c/0x1b0\\n[ 4380.796723]  mtk_vcodec_dec_remove+0x5c/0xa0 [mtk_vcodec_dec]\\n[ 4380.802466]  platform_remove+0x2c/0x60\\n[ 4380.806204]  __device_release_driver+0x194/0x250\\n[ 4380.810810]  driver_detach+0xc8/0x15c\\n[ 4380.814462]  bus_remove_driver+0x5c/0xb0\\n[ 4380.818375]  driver_unregister+0x34/0x64\\n[ 4380.822288]  platform_driver_unregister+0x18/0x24\\n[ 4380.826979]  mtk_vcodec_dec_driver_exit+0x1c/0x888 [mtk_vcodec_dec]\\n[ 4380.833240]  __arm64_sys_delete_module+0x190/0x224\\n[ 4380.838020]  invoke_syscall+0x48/0x114\\n[ 4380.841760]  el0_svc_common.constprop.0+0x60/0x11c\\n[ 4380.846540]  do_el0_svc+0x28/0x90\\n[ 4380.849844]  el0_svc+0x4c/0x100\\n[ 4380.852975]  el0t_64_sync_handler+0xec/0xf0\\n[ 4380.857148]  el0t_64_sync+0x190/0x194\\n[ 4380.860801] Code: 94431515 17ffffca d503201f d503245f (b9400004)\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: media: mediatek: vcodec: evitar el bloqueo del kernel cuando se ejecuta rmmod mtk-vcodec-dec.ko Si el controlador admite el modo subdev, el par\u00e1metro \\\"dev-\u0026gt;pm.dev\\\" ser\u00e1 NULL en mtk_vcodec_dec_remove. El kernel se bloquear\u00e1 cuando se intente ejecutar rmmod mtk-vcodec-dec.ko. [ 4380.702726] pc : do_raw_spin_trylock+0x4/0x80 [ 4380.707075] lr : _raw_spin_lock_irq+0x90/0x14c [ 4380.711509] sp : ffff80000819bc10 [ 4380.714811] x29: ffff80000819bc10 x28: ffff3600c03e4000 x27: 0000000000000000 [ 4380.721934] x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000 [ 4380.729057] x23: ffff3600c0f34930 x22: ffffd5e923549000 x21: 0000000000000220 [ 4380.736179] x20: 0000000000000208 x19: ffffd5e9213e8ebc x18: 0000000000000020 [ 4380.743298] x17: 0000002000000000 x16: ffffd5e9213e8e90 x15: 696c346f65646976 [ 4380.750420] x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000040 [ 4380.757542] x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000 [ 4380.764664] x8 : 0000000000000000 x7 : ffff3600c7273ae8 x6 : ffffd5e9213e8ebc [ 4380.771786] x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 [ 4380.778908] x2 : 0000000000000000 x1 : ffff3600c03e4000 x0 : 0000000000000208 [ 4380.786031] Call trace: [ 4380.788465] do_raw_spin_trylock+0x4/0x80 [ 4380.792462] __pm_runtime_disable+0x2c/0x1b0 [ 4380.796723] mtk_vcodec_dec_remove+0x5c/0xa0 [mtk_vcodec_dec] [ 4380.802466] platform_remove+0x2c/0x60 [ 4380.806204] __device_release_driver+0x194/0x250 [ 4380.810810] driver_detach+0xc8/0x15c [ 4380.814462] bus_remove_driver+0x5c/0xb0 [ 4380.818375] driver_unregister+0x34/0x64 [ 4380.822288] platform_driver_unregister+0x18/0x24 [ 4380.826979] mtk_vcodec_dec_driver_exit+0x1c/0x888 [mtk_vcodec_dec] [ 4380.833240] __arm64_sys_delete_module+0x190/0x224 [ 4380.838020] invoke_syscall+0x48/0x114 [ 4380.841760] el0_svc_common.constprop.0+0x60/0x11c [ 4380.846540] do_el0_svc+0x28/0x90 [ 4380.849844] el0_svc+0x4c/0x100 [ 4380.852975] el0t_64_sync_handler+0xec/0xf0 [ 4380.857148] el0t_64_sync+0x190/0x194 [ 4380.860801] Code: 94431515 17ffffca d503201f d503245f (b9400004) \"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_drv.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"c05bada35f015fb735a9c3830226ccbe2b05008f\",\"lessThan\":\"1fa37b00dc55a061a3eb82e378849862b4aeca9d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c05bada35f015fb735a9c3830226ccbe2b05008f\",\"lessThan\":\"c10c0086db688c95bb4e0e378e523818dff1551d\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_drv.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.18\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.18\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.18.3\",\"lessThanOrEqual\":\"5.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.19\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2025-10-01T19:38:46.175575Z\",\"id\":\"CVE-2022-49496\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-667\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-667\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"5.18.3\",\"matchCriteriaId\":\"3108C4DF-1578-4A9A-ADC7-1128DE921D69\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1fa37b00dc55a061a3eb82e378849862b4aeca9d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c10c0086db688c95bb4e0e378e523818dff1551d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T21:09:25+00:00",
      "cve": "CVE-2022-49496",
      "id": "CVE-2022-49496",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: media: mediatek: vcodec: prevent kernel crash when rmmod mtk-vcodec-dec.ko",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49496.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-29T02:27:43Z",
      "cve": "CVE-2022-49496",
      "id": "CVE-2022-49496",
      "initial_release_date": "2025-02-27T03:05:58Z",
      "product_status:known_affected": "292",
      "product_status:known_not_affected": "203",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49496",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49496.json",
      "version": "18"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.5, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-49496\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T19:38:46.175575Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-667\", \"description\": \"CWE-667 Improper Locking\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T16:48:49.668Z\"}}], \"cna\": {\"title\": \"media: mediatek: vcodec: prevent kernel crash when rmmod mtk-vcodec-dec.ko\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"c05bada35f015fb735a9c3830226ccbe2b05008f\", \"lessThan\": \"1fa37b00dc55a061a3eb82e378849862b4aeca9d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c05bada35f015fb735a9c3830226ccbe2b05008f\", \"lessThan\": \"c10c0086db688c95bb4e0e378e523818dff1551d\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_drv.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.18\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.18\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.18.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.18.*\"}, {\"status\": \"unaffected\", \"version\": \"5.19\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_drv.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/1fa37b00dc55a061a3eb82e378849862b4aeca9d\"}, {\"url\": \"https://git.kernel.org/stable/c/c10c0086db688c95bb4e0e378e523818dff1551d\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmedia: mediatek: vcodec: prevent kernel crash when rmmod mtk-vcodec-dec.ko\\n\\nIf the driver support subdev mode, the parameter \\\"dev-\u003epm.dev\\\" will be\\nNULL in mtk_vcodec_dec_remove. Kernel will crash when try to rmmod\\nmtk-vcodec-dec.ko.\\n\\n[ 4380.702726] pc : do_raw_spin_trylock+0x4/0x80\\n[ 4380.707075] lr : _raw_spin_lock_irq+0x90/0x14c\\n[ 4380.711509] sp : ffff80000819bc10\\n[ 4380.714811] x29: ffff80000819bc10 x28: ffff3600c03e4000 x27: 0000000000000000\\n[ 4380.721934] x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000\\n[ 4380.729057] x23: ffff3600c0f34930 x22: ffffd5e923549000 x21: 0000000000000220\\n[ 4380.736179] x20: 0000000000000208 x19: ffffd5e9213e8ebc x18: 0000000000000020\\n[ 4380.743298] x17: 0000002000000000 x16: ffffd5e9213e8e90 x15: 696c346f65646976\\n[ 4380.750420] x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000040\\n[ 4380.757542] x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000\\n[ 4380.764664] x8 : 0000000000000000 x7 : ffff3600c7273ae8 x6 : ffffd5e9213e8ebc\\n[ 4380.771786] x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000\\n[ 4380.778908] x2 : 0000000000000000 x1 : ffff3600c03e4000 x0 : 0000000000000208\\n[ 4380.786031] Call trace:\\n[ 4380.788465]  do_raw_spin_trylock+0x4/0x80\\n[ 4380.792462]  __pm_runtime_disable+0x2c/0x1b0\\n[ 4380.796723]  mtk_vcodec_dec_remove+0x5c/0xa0 [mtk_vcodec_dec]\\n[ 4380.802466]  platform_remove+0x2c/0x60\\n[ 4380.806204]  __device_release_driver+0x194/0x250\\n[ 4380.810810]  driver_detach+0xc8/0x15c\\n[ 4380.814462]  bus_remove_driver+0x5c/0xb0\\n[ 4380.818375]  driver_unregister+0x34/0x64\\n[ 4380.822288]  platform_driver_unregister+0x18/0x24\\n[ 4380.826979]  mtk_vcodec_dec_driver_exit+0x1c/0x888 [mtk_vcodec_dec]\\n[ 4380.833240]  __arm64_sys_delete_module+0x190/0x224\\n[ 4380.838020]  invoke_syscall+0x48/0x114\\n[ 4380.841760]  el0_svc_common.constprop.0+0x60/0x11c\\n[ 4380.846540]  do_el0_svc+0x28/0x90\\n[ 4380.849844]  el0_svc+0x4c/0x100\\n[ 4380.852975]  el0t_64_sync_handler+0xec/0xf0\\n[ 4380.857148]  el0t_64_sync+0x190/0x194\\n[ 4380.860801] Code: 94431515 17ffffca d503201f d503245f (b9400004)\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.18.3\", \"versionStartIncluding\": \"5.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.19\", \"versionStartIncluding\": \"5.18\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-15T12:22:44.706Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-49496\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-15T12:22:44.706Z\", \"dateReserved\": \"2025-02-26T02:08:31.586Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-02-26T02:13:31.528Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.