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CVE-2026-53380 (GCVE-0-2026-53380)

Vulnerability from cvelistv5 – Published: 2026-07-19 10:02 – Updated: 2026-08-05 12:35
VLAI
Title
media: rzv2h-ivc: Fix concurrent buffer list access
Summary
In the Linux kernel, the following vulnerability has been resolved: media: rzv2h-ivc: Fix concurrent buffer list access The list of buffers (`rzv2h_ivc::buffers.queue`) is protected by a spinlock (`rzv2h_ivc::buffers.lock`). However, in `rzv2h_ivc_transfer_buffer()`, which runs in a separate workqueue, the `list_del()` call is executed without holding the spinlock, which makes it possible for the list to be concurrently modified Fix that by removing a buffer from the list in the lock protected section. [assign ivc->buffers.curr in critical section as reported by Barnabas]
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: f0b3984d821b3a603cd8786dca6cc73d47c4521a , < c746522bd3264132ab2e2382e96e19cdb8a6c1ba (git)
Affected: f0b3984d821b3a603cd8786dca6cc73d47c4521a , < 72773ff1cdfaebc593f53b1719b2c1773ecf8c43 (git)
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Linux Linux Affected: 6.19
Unaffected: 0 , < 6.19 (semver)
Unaffected: 7.0.9 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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          "programFiles": [
            "drivers/media/platform/renesas/rzv2h-ivc/rzv2h-ivc-video.c"
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              "value": "AV:L - The flaw is reached only through local V4L2 syscalls (open/ioctl/mmap) on the /dev/video* node registered by this platform driver; it is not triggered by remote network packets or physical bus insertion.\nAC:L - An attacker controls both sides of the race by issuing concurrent VIDIOC_QBUF and VIDIOC_STREAMOFF/STREAMON calls from multiple threads while streaming, reliably interleaving with the workqueue handler that performs the unlocked list_del().\nPR:L - Exploitation requires only a local account with access to the V4L2 video device node (typically membership in the video group or a dedicated vision-service account on RZ/V2H embedded deployments), not real root in the init namespace.\nUI:N - The attacker directly drives all required V4L2 ioctl operations to queue buffers and start/stop streaming; no independent victim action is needed.\nS:U - Successful exploitation corrupts kernel memory from a local userspace context to achieve kernel-level impact (crash, info leak, or privilege escalation), which remains within the same kernel security authority rather than crossing a VM or hypervisor boundary.\nC:H - Unsynchronized list_del()/list manipulation on the buffer queue can corrupt kernel linked-list pointers and create use-after-free conditions when buffers are concurrently completed or returned, enabling arbitrary kernel memory reads.\nI:H - Corrupted list_head structures and concurrent assignment of ivc-\u003ebuffers.curr outside the spinlock can yield exploitable heap corruption and arbitrary write primitives beyond a simple denial-of-service crash.\nA:H - The race can cause kernel list corruption, use-after-free, and BUG/list debugging failures that result in kernel oops/panic when streaming buffers on affected RZ/V2H systems."
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    "dateReserved": "2026-06-09T07:44:35.401Z",
    "dateUpdated": "2026-08-05T12:35:20.740Z",
    "state": "PUBLISHED"
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    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-07-21T08:06:39+00:00",
      "cve": "CVE-2026-53380",
      "id": "CVE-2026-53380",
      "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: rzv2h-ivc: Fix concurrent buffer list access",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53380.json",
      "version": "3"
    }
  }
}



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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.


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