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CVE-2022-50757 (GCVE-0-2022-50757)

Vulnerability from cvelistv5 – Published: 2025-12-24 13:05 – Updated: 2026-08-05 08:59
VLAI
Title
media: camss: Clean up received buffers on failed start of streaming
Summary
In the Linux kernel, the following vulnerability has been resolved: media: camss: Clean up received buffers on failed start of streaming It is required to return the received buffers, if streaming can not be started. For instance media_pipeline_start() may fail with EPIPE, if a link validation between entities is not passed, and in such a case a user gets a kernel warning: WARNING: CPU: 1 PID: 520 at drivers/media/common/videobuf2/videobuf2-core.c:1592 vb2_start_streaming+0xec/0x160 <snip> Call trace: vb2_start_streaming+0xec/0x160 vb2_core_streamon+0x9c/0x1a0 vb2_ioctl_streamon+0x68/0xbc v4l_streamon+0x30/0x3c __video_do_ioctl+0x184/0x3e0 video_usercopy+0x37c/0x7b0 video_ioctl2+0x24/0x40 v4l2_ioctl+0x4c/0x70 The fix is to correct the error path in video_start_streaming() of camss.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 0ac2586c410fe00d58dd09bf270a22f25d5287b8 , < 75954cde8a5ca84003b24b6bf83197240935bd74 (git)
Affected: 0ac2586c410fe00d58dd09bf270a22f25d5287b8 , < 04c734c716a97f1493b1edac41316aaed1d2a9d9 (git)
Affected: 0ac2586c410fe00d58dd09bf270a22f25d5287b8 , < fe443b3fe36cd23d4f5dc6d825d34322e7c89f0c (git)
Affected: 0ac2586c410fe00d58dd09bf270a22f25d5287b8 , < 3d5cab726e3b370fea1b6e67183f0e13c409ce5c (git)
Affected: 0ac2586c410fe00d58dd09bf270a22f25d5287b8 , < d1c44928bb3ca0ec88e7ad5937a2a26a259aede6 (git)
Affected: 0ac2586c410fe00d58dd09bf270a22f25d5287b8 , < f05326a440dc31b91b688b2f3f15b7347894a50b (git)
Affected: 0ac2586c410fe00d58dd09bf270a22f25d5287b8 , < 24df4fa3e795fb4b15fd4d3c036596e0978d265a (git)
Affected: 0ac2586c410fe00d58dd09bf270a22f25d5287b8 , < c8f3582345e6a69da65ab588f7c4c2d1685b0e80 (git)
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Linux Linux Affected: 4.14
Unaffected: 0 , < 4.14 (semver)
Unaffected: 4.14.303 , ≤ 4.14.* (semver)
Unaffected: 4.19.270 , ≤ 4.19.* (semver)
Unaffected: 5.4.229 , ≤ 5.4.* (semver)
Unaffected: 5.10.163 , ≤ 5.10.* (semver)
Unaffected: 5.15.86 , ≤ 5.15.* (semver)
Unaffected: 6.0.16 , ≤ 6.0.* (semver)
Unaffected: 6.1.2 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
  "containers": {
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: camss: Clean up received buffers on failed start of streaming\n\nIt is required to return the received buffers, if streaming can not be\nstarted. For instance media_pipeline_start() may fail with EPIPE, if\na link validation between entities is not passed, and in such a case\na user gets a kernel warning:\n\n  WARNING: CPU: 1 PID: 520 at drivers/media/common/videobuf2/videobuf2-core.c:1592 vb2_start_streaming+0xec/0x160\n  \u003csnip\u003e\n  Call trace:\n   vb2_start_streaming+0xec/0x160\n   vb2_core_streamon+0x9c/0x1a0\n   vb2_ioctl_streamon+0x68/0xbc\n   v4l_streamon+0x30/0x3c\n   __video_do_ioctl+0x184/0x3e0\n   video_usercopy+0x37c/0x7b0\n   video_ioctl2+0x24/0x40\n   v4l2_ioctl+0x4c/0x70\n\nThe fix is to correct the error path in video_start_streaming() of camss."
        }
      ],
      "metrics": [
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
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            {
              "lang": "en",
              "value": "AV:L - The vulnerable path is reached only through local V4L2 ioctls (VIDIOC_REQBUFS/QBUF/STREAMON) on the Qualcomm CAMSS /dev/video node; there is no network or adjacent-protocol entry point.\nAC:L - The attacker fully controls the failure condition by configuring an invalid media pipeline (e.g., disabled links or link validation failure with EPIPE) and then calling STREAMON; the missing flush is deterministic with no race beyond attacker control.\nPR:L - video_open() and the STREAMON path perform no capability checks; only permission to open the camera video device (video group, seat ACL, or Android CAMERA-permission context) is required, which is basic unprivileged local access.\nUI:N - The attacker issues the open/queue/streamon/reqbufs sequence from their own process; no victim interaction is required.\nS:U - Impact is confined to kernel heap and CAMSS driver state within the same OS security authority; the bug does not cross a VM, IOMMU, or sandbox boundary by itself.\nC:H - Failing to flush leaves buffers on output-\u003epending_bufs after vb2 force-reclaims them; a later REQBUFS(0)/release frees those objects while the driver still holds list pointers, creating a use-after-free that can disclose reclaimed heap contents.\nI:H - The stale pending_bufs linkage enables list corruption (INIT_LIST_HEAD/list_del on still-linked or freed nodes) and heap UAF write primitives when the queue is reused or cancelled, which is treated as high integrity impact under conservative memory-corruption scoring.\nA:H - The bug immediately triggers WARN_ON in vb2_start_streaming, and the resulting UAF/list corruption can oops or panic the kernel, giving high availability impact."
            }
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      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:59:43.420Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "title": "media: camss: Clean up received buffers on failed start of streaming",
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    "datePublished": "2025-12-24T13:05:50.399Z",
    "dateReserved": "2025-12-24T13:02:21.545Z",
    "dateUpdated": "2026-08-05T08:59:43.420Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.2",
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      "date": "2026-09-16",
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      "percentile": "0.0975"
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For instance media_pipeline_start() may fail with EPIPE, if\\na link validation between entities is not passed, and in such a case\\na user gets a kernel warning:\\n\\n  WARNING: CPU: 1 PID: 520 at drivers/media/common/videobuf2/videobuf2-core.c:1592 vb2_start_streaming+0xec/0x160\\n  \u003csnip\u003e\\n  Call trace:\\n   vb2_start_streaming+0xec/0x160\\n   vb2_core_streamon+0x9c/0x1a0\\n   vb2_ioctl_streamon+0x68/0xbc\\n   v4l_streamon+0x30/0x3c\\n   __video_do_ioctl+0x184/0x3e0\\n   video_usercopy+0x37c/0x7b0\\n   video_ioctl2+0x24/0x40\\n   v4l2_ioctl+0x4c/0x70\\n\\nThe fix is to correct the error path in video_start_streaming() of camss.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/media/platform/qcom/camss/camss-video.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"0ac2586c410fe00d58dd09bf270a22f25d5287b8\",\"lessThan\":\"75954cde8a5ca84003b24b6bf83197240935bd74\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0ac2586c410fe00d58dd09bf270a22f25d5287b8\",\"lessThan\":\"04c734c716a97f1493b1edac41316aaed1d2a9d9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0ac2586c410fe00d58dd09bf270a22f25d5287b8\",\"lessThan\":\"fe443b3fe36cd23d4f5dc6d825d34322e7c89f0c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0ac2586c410fe00d58dd09bf270a22f25d5287b8\",\"lessThan\":\"3d5cab726e3b370fea1b6e67183f0e13c409ce5c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0ac2586c410fe00d58dd09bf270a22f25d5287b8\",\"lessThan\":\"d1c44928bb3ca0ec88e7ad5937a2a26a259aede6\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0ac2586c410fe00d58dd09bf270a22f25d5287b8\",\"lessThan\":\"f05326a440dc31b91b688b2f3f15b7347894a50b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0ac2586c410fe00d58dd09bf270a22f25d5287b8\",\"lessThan\":\"24df4fa3e795fb4b15fd4d3c036596e0978d265a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0ac2586c410fe00d58dd09bf270a22f25d5287b8\",\"lessThan\":\"c8f3582345e6a69da65ab588f7c4c2d1685b0e80\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/media/platform/qcom/camss/camss-video.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.14\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.14\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.14.303\",\"lessThanOrEqual\":\"4.14.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.270\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.229\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.163\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.86\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.0.16\",\"lessThanOrEqual\":\"6.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.2\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/04c734c716a97f1493b1edac41316aaed1d2a9d9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/24df4fa3e795fb4b15fd4d3c036596e0978d265a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3d5cab726e3b370fea1b6e67183f0e13c409ce5c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/75954cde8a5ca84003b24b6bf83197240935bd74\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c8f3582345e6a69da65ab588f7c4c2d1685b0e80\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d1c44928bb3ca0ec88e7ad5937a2a26a259aede6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f05326a440dc31b91b688b2f3f15b7347894a50b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fe443b3fe36cd23d4f5dc6d825d34322e7c89f0c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-08-20T15:10:08+00:00",
      "cve": "CVE-2022-50757",
      "id": "CVE-2022-50757",
      "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: Linux kernel: Denial of Service or Information Disclosure in `camss` media driver",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50757.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-01T01:23:45Z",
      "cve": "CVE-2022-50757",
      "id": "CVE-2022-50757",
      "initial_release_date": "2025-12-25T01:04:03Z",
      "product_status:known_affected": "354",
      "product_status:known_not_affected": "432",
      "product_status:recommended": "196",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50757",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50757.json",
      "version": "26"
    }
  }
}



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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

Author Source Type Date Other

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.


Related by attack behaviour

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.