Vulnerability-Lookup

GHSA-G7XF-GG8W-VW6H

Vulnerability from github – Published: 2026-06-25 09:31 – Updated: 2026-06-28 09:31

Details

In the Linux kernel, the following vulnerability has been resolved:

vsock/virtio: fix potential unbounded skb queue

virtio_transport_inc_rx_pkt() checks vvs->rx_bytes + len > vvs->buf_alloc.

virtio_transport_recv_enqueue() skips coalescing for packets with VIRTIO_VSOCK_SEQ_EOM.

If fed with packets with len == 0 and VIRTIO_VSOCK_SEQ_EOM, a very large number of packets can be queued because vvs->rx_bytes stays at 0.

Fix this by estimating the skb metadata size:

(Number of skbs in the queue) * SKB_TRUESIZE(0)

Severity

7.1 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-53132"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400",
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-25T09:16:30Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nvsock/virtio: fix potential unbounded skb queue\n\nvirtio_transport_inc_rx_pkt() checks vvs-\u003erx_bytes + len \u003e vvs-\u003ebuf_alloc.\n\nvirtio_transport_recv_enqueue() skips coalescing for packets\nwith VIRTIO_VSOCK_SEQ_EOM.\n\nIf fed with packets with len == 0 and VIRTIO_VSOCK_SEQ_EOM,\na very large number of packets can be queued\nbecause vvs-\u003erx_bytes stays at 0.\n\nFix this by estimating the skb metadata size:\n\n\t(Number of skbs in the queue) * SKB_TRUESIZE(0)",
  "id": "GHSA-g7xf-gg8w-vw6h",
  "modified": "2026-06-28T09:31:42Z",
  "published": "2026-06-25T09:31:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53132"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/059b7dbd20a6f0c539a45ddff1573cb8946685b5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/100d5b2ffdc6468b9e48532641f29e83efdcb63c"
    },
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      "url": "https://git.kernel.org/stable/c/1eca304f97a34ed5e921e1f0e06c8b241f25bf12"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9bdc637fde66b63d6cad0caacd034888bb7bf5f5"
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  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-53132 (GCVE-0-2026-53132)

Vulnerability from cvelistv5 – Published: 2026-06-25 08:38 – Updated: 2026-10-19 19:57

Title

vsock/virtio: fix potential unbounded skb queue

Summary

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fix potential unbounded skb queue virtio_transport_inc_rx_pkt() checks vvs->rx_bytes + len > vvs->buf_alloc. virtio_transport_recv_enqueue() skips coalescing for packets with VIRTIO_VSOCK_SEQ_EOM. If fed with packets with len == 0 and VIRTIO_VSOCK_SEQ_EOM, a very large number of packets can be queued because vvs->rx_bytes stays at 0. Fix this by estimating the skb metadata size: (Number of skbs in the queue) * SKB_TRUESIZE(0)

Severity

7.1 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-16 15:25 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7034 records in the last 180 days details

References

4 references

URL	Tags
https://git.kernel.org/stable/c/1eca304f97a34ed5e…
https://git.kernel.org/stable/c/9bdc637fde66b63d6…
https://git.kernel.org/stable/c/100d5b2ffdc6468b9…
https://git.kernel.org/stable/c/059b7dbd20a6f0c53…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 077706165717686a2a6a71405fef036cd5b37ae0 , < 1eca304f97a34ed5e921e1f0e06c8b241f25bf12 (git) Affected: 077706165717686a2a6a71405fef036cd5b37ae0 , < 9bdc637fde66b63d6cad0caacd034888bb7bf5f5 (git) Affected: 077706165717686a2a6a71405fef036cd5b37ae0 , < 100d5b2ffdc6468b9e48532641f29e83efdcb63c (git) Affected: 077706165717686a2a6a71405fef036cd5b37ae0 , < 059b7dbd20a6f0c539a45ddff1573cb8946685b5 (git) Affected: 5852a2b573f7a3a29df46296e56aa3491e589cdf (git) Affected: 6.1.63 , < 6.2 (semver)
Linux	Linux	Affected: 6.3 Unaffected: 0 , < 6.3 (semver) Unaffected: 6.12.94 , ≤ 6.12.* (semver) Unaffected: 6.18.36 , ≤ 6.18.* (semver) Unaffected: 7.0.13 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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                "id": "CVE-2026-53132",
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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.

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