CVE-2026-53382 (GCVE-0-2026-53382)

Vulnerability from cvelistv5 – Published: 2026-07-19 11:59 – Updated: 2026-07-19 11:59
VLAI
Title
media: vidtv: fix NULL pointer dereference in vidtv_mux_push_si
Summary
In the Linux kernel, the following vulnerability has been resolved: media: vidtv: fix NULL pointer dereference in vidtv_mux_push_si syzbot reported a general protection fault in vidtv_psi_ts_psi_write_into [1]. vidtv_mux_get_pid_ctx() can return NULL, but vidtv_mux_push_si() does not check for this before dereferencing the returned pointer to access the continuity counter. This leads to a general protection fault when accessing a near-NULL address. The root cause is that vidtv_mux_pid_ctx_init() does not check the return value of vidtv_mux_create_pid_ctx_once() for PMT section PIDs. If the allocation fails, the PID context is never created, but init returns success. The subsequent vidtv_mux_push_si() call then gets NULL from vidtv_mux_get_pid_ctx() and crashes. Fix both the root cause (add error check in vidtv_mux_pid_ctx_init for PMT PIDs) and add defensive NULL checks in vidtv_mux_push_si for all vidtv_mux_get_pid_ctx() calls. [1] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] Workqueue: events vidtv_mux_tick RIP: 0010:vidtv_psi_ts_psi_write_into+0x54a/0xbc0 drivers/media/test-drivers/vidtv/vidtv_psi.c:197 Call Trace: <TASK> vidtv_psi_table_header_write_into drivers/media/test-drivers/vidtv/vidtv_psi.c:799 [inline] vidtv_psi_pmt_write_into+0x3b2/0xa70 drivers/media/test-drivers/vidtv/vidtv_psi.c:1231 vidtv_mux_push_si+0x932/0xe80 drivers/media/test-drivers/vidtv/vidtv_mux.c:196 vidtv_mux_tick+0xe9b/0x1480 drivers/media/test-drivers/vidtv/vidtv_mux.c:408
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: f90cf6079bf67988f8b1ad1ade70fc89d0080905 , < 455bc12e7b73ab5a2dfcb47822e91e772bc6c42e (git)
Affected: f90cf6079bf67988f8b1ad1ade70fc89d0080905 , < f0f5a1d7056980a0d512456fdb370cfb72bba86a (git)
Affected: f90cf6079bf67988f8b1ad1ade70fc89d0080905 , < 6df7e16d4f742c80add58995a6e69385b97aa9e6 (git)
Affected: f90cf6079bf67988f8b1ad1ade70fc89d0080905 , < cd923dadefadb9671b5ac341b672ff424d429c39 (git)
Affected: f90cf6079bf67988f8b1ad1ade70fc89d0080905 , < 353d9578951dd38bc9679308f5b618ceed1f20fa (git)
Affected: f90cf6079bf67988f8b1ad1ade70fc89d0080905 , < f965cf22dda7f512f4922415894c3e528269a4ae (git)
Affected: f90cf6079bf67988f8b1ad1ade70fc89d0080905 , < b28b12be6e8910489e6800ed93ea4d41dfe19683 (git)
Affected: f90cf6079bf67988f8b1ad1ade70fc89d0080905 , < 232e4b313ea342672edf8947e067c0de4328405b (git)
Affected: f90cf6079bf67988f8b1ad1ade70fc89d0080905 , < 7d8bf3d8f91073f4db347ed3aa6302b56107499c (git)
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Linux Linux Affected: 5.10
Unaffected: 0 , < 5.10 (semver)
Unaffected: 5.10.260 , ≤ 5.10.* (semver)
Unaffected: 5.15.211 , ≤ 5.15.* (semver)
Unaffected: 6.1.177 , ≤ 6.1.* (semver)
Unaffected: 6.6.144 , ≤ 6.6.* (semver)
Unaffected: 6.12.95 , ≤ 6.12.* (semver)
Unaffected: 6.18.37 , ≤ 6.18.* (semver)
Unaffected: 7.0.14 , ≤ 7.0.* (semver)
Unaffected: 7.1.2 , ≤ 7.1.* (semver)
Unaffected: 7.2-rc1 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: vidtv: fix NULL pointer dereference in vidtv_mux_push_si\n\nsyzbot reported a general protection fault in\nvidtv_psi_ts_psi_write_into [1].\n\nvidtv_mux_get_pid_ctx() can return NULL, but vidtv_mux_push_si() does\nnot check for this before dereferencing the returned pointer to access\nthe continuity counter. This leads to a general protection fault when\naccessing a near-NULL address.\n\nThe root cause is that vidtv_mux_pid_ctx_init() does not check the\nreturn value of vidtv_mux_create_pid_ctx_once() for PMT section PIDs.\nIf the allocation fails, the PID context is never created, but init\nreturns success. The subsequent vidtv_mux_push_si() call then gets\nNULL from vidtv_mux_get_pid_ctx() and crashes.\n\nFix both the root cause (add error check in vidtv_mux_pid_ctx_init\nfor PMT PIDs) and add defensive NULL checks in vidtv_mux_push_si for\nall vidtv_mux_get_pid_ctx() calls.\n\n[1]\nOops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI\nKASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\nWorkqueue: events vidtv_mux_tick\nRIP: 0010:vidtv_psi_ts_psi_write_into+0x54a/0xbc0 drivers/media/test-drivers/vidtv/vidtv_psi.c:197\nCall Trace:\n \u003cTASK\u003e\n vidtv_psi_table_header_write_into drivers/media/test-drivers/vidtv/vidtv_psi.c:799 [inline]\n vidtv_psi_pmt_write_into+0x3b2/0xa70 drivers/media/test-drivers/vidtv/vidtv_psi.c:1231\n vidtv_mux_push_si+0x932/0xe80 drivers/media/test-drivers/vidtv/vidtv_mux.c:196\n vidtv_mux_tick+0xe9b/0x1480 drivers/media/test-drivers/vidtv/vidtv_mux.c:408"
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "title": "media: vidtv: fix NULL pointer dereference in vidtv_mux_push_si",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-53382",
    "datePublished": "2026-07-19T11:59:31.045Z",
    "dateReserved": "2026-06-09T07:44:35.401Z",
    "dateUpdated": "2026-07-19T11:59:31.045Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-53382",
      "date": "2026-07-21",
      "epss": "0.00195",
      "percentile": "0.09463"
    },
    "microsoft_vex": {
      "current_release_date": "2026-07-20T14:46:47.000Z",
      "cve": "CVE-2026-53382",
      "id": "msrc_CVE-2026-53382",
      "initial_release_date": "2026-07-20T01:07:57.000Z",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "media: vidtv: fix NULL pointer dereference in vidtv_mux_push_si",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-53382.json",
      "version": "2"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-53382\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-07-19T12:16:48.970\",\"lastModified\":\"2026-07-19T12:16:48.970\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmedia: vidtv: fix NULL pointer dereference in vidtv_mux_push_si\\n\\nsyzbot reported a general protection fault in\\nvidtv_psi_ts_psi_write_into [1].\\n\\nvidtv_mux_get_pid_ctx() can return NULL, but vidtv_mux_push_si() does\\nnot check for this before dereferencing the returned pointer to access\\nthe continuity counter. This leads to a general protection fault when\\naccessing a near-NULL address.\\n\\nThe root cause is that vidtv_mux_pid_ctx_init() does not check the\\nreturn value of vidtv_mux_create_pid_ctx_once() for PMT section PIDs.\\nIf the allocation fails, the PID context is never created, but init\\nreturns success. The subsequent vidtv_mux_push_si() call then gets\\nNULL from vidtv_mux_get_pid_ctx() and crashes.\\n\\nFix both the root cause (add error check in vidtv_mux_pid_ctx_init\\nfor PMT PIDs) and add defensive NULL checks in vidtv_mux_push_si for\\nall vidtv_mux_get_pid_ctx() calls.\\n\\n[1]\\nOops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI\\nKASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\\nWorkqueue: events vidtv_mux_tick\\nRIP: 0010:vidtv_psi_ts_psi_write_into+0x54a/0xbc0 drivers/media/test-drivers/vidtv/vidtv_psi.c:197\\nCall Trace:\\n \u003cTASK\u003e\\n vidtv_psi_table_header_write_into drivers/media/test-drivers/vidtv/vidtv_psi.c:799 [inline]\\n vidtv_psi_pmt_write_into+0x3b2/0xa70 drivers/media/test-drivers/vidtv/vidtv_psi.c:1231\\n vidtv_mux_push_si+0x932/0xe80 drivers/media/test-drivers/vidtv/vidtv_mux.c:196\\n vidtv_mux_tick+0xe9b/0x1480 drivers/media/test-drivers/vidtv/vidtv_mux.c:408\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/media/test-drivers/vidtv/vidtv_mux.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"f90cf6079bf67988f8b1ad1ade70fc89d0080905\",\"lessThan\":\"455bc12e7b73ab5a2dfcb47822e91e772bc6c42e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f90cf6079bf67988f8b1ad1ade70fc89d0080905\",\"lessThan\":\"f0f5a1d7056980a0d512456fdb370cfb72bba86a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f90cf6079bf67988f8b1ad1ade70fc89d0080905\",\"lessThan\":\"6df7e16d4f742c80add58995a6e69385b97aa9e6\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f90cf6079bf67988f8b1ad1ade70fc89d0080905\",\"lessThan\":\"cd923dadefadb9671b5ac341b672ff424d429c39\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f90cf6079bf67988f8b1ad1ade70fc89d0080905\",\"lessThan\":\"353d9578951dd38bc9679308f5b618ceed1f20fa\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f90cf6079bf67988f8b1ad1ade70fc89d0080905\",\"lessThan\":\"f965cf22dda7f512f4922415894c3e528269a4ae\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f90cf6079bf67988f8b1ad1ade70fc89d0080905\",\"lessThan\":\"b28b12be6e8910489e6800ed93ea4d41dfe19683\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f90cf6079bf67988f8b1ad1ade70fc89d0080905\",\"lessThan\":\"232e4b313ea342672edf8947e067c0de4328405b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f90cf6079bf67988f8b1ad1ade70fc89d0080905\",\"lessThan\":\"7d8bf3d8f91073f4db347ed3aa6302b56107499c\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/media/test-drivers/vidtv/vidtv_mux.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.10\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.10\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.260\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.211\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.177\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.144\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.95\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.37\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0.14\",\"lessThanOrEqual\":\"7.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.2\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2-rc1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/232e4b313ea342672edf8947e067c0de4328405b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/353d9578951dd38bc9679308f5b618ceed1f20fa\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/455bc12e7b73ab5a2dfcb47822e91e772bc6c42e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6df7e16d4f742c80add58995a6e69385b97aa9e6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7d8bf3d8f91073f4db347ed3aa6302b56107499c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b28b12be6e8910489e6800ed93ea4d41dfe19683\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cd923dadefadb9671b5ac341b672ff424d429c39\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f0f5a1d7056980a0d512456fdb370cfb72bba86a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f965cf22dda7f512f4922415894c3e528269a4ae\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-07-21T08:06:48+00:00",
      "cve": "CVE-2026-53382",
      "id": "CVE-2026-53382",
      "initial_release_date": "2026-07-19T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: media: vidtv: fix NULL pointer dereference in vidtv_mux_push_si",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53382.json",
      "version": "3"
    }
  }
}



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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.