Vulnerability-Lookup

GHSA-954M-592C-4VPC

Vulnerability from github – Published: 2026-07-19 18:31 – Updated: 2026-07-19 18:31

Details

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

fwctl: pds: Validate RPC input size before parsing

The fwctl core allocates the device-specific RPC input buffer with fwctl_rpc.in_len and passes that buffer to the driver callback.

pdsfc_fw_rpc() casts the buffer to struct fwctl_rpc_pds and then calls pdsfc_validate_rpc(), which reads fields from that structure before checking that the input buffer is large enough to contain it. A short in_len can make pds_fwctl read beyond the allocation.

Reject pds RPC buffers that are smaller than struct fwctl_rpc_pds before parsing any pds-specific fields.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-64101"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-19T16:17:51Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfwctl: pds: Validate RPC input size before parsing\n\nThe fwctl core allocates the device-specific RPC input buffer with\nfwctl_rpc.in_len and passes that buffer to the driver callback.\n\npdsfc_fw_rpc() casts the buffer to struct fwctl_rpc_pds and then calls\npdsfc_validate_rpc(), which reads fields from that structure before\nchecking that the input buffer is large enough to contain it. A short\nin_len can make pds_fwctl read beyond the allocation.\n\nReject pds RPC buffers that are smaller than struct fwctl_rpc_pds before\nparsing any pds-specific fields.",
  "id": "GHSA-954m-592c-4vpc",
  "modified": "2026-07-19T18:31:52Z",
  "published": "2026-07-19T18:31:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64101"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0d470d36551058e3f728574308b815a80bca710f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9e3f18883a98420a3b8873c6f894bc57e9b98e41"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e7537735028c3ad4b0bfc02ff8fa2a1a28aa04fe"
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  ],
  "schema_version": "1.4.0",
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}

CVE-2026-64101 (GCVE-0-2026-64101)

Vulnerability from cvelistv5 – Published: 2026-07-19 15:40 – Updated: 2026-07-19 15:40

Title

fwctl: pds: Validate RPC input size before parsing

Summary

In the Linux kernel, the following vulnerability has been resolved: fwctl: pds: Validate RPC input size before parsing The fwctl core allocates the device-specific RPC input buffer with fwctl_rpc.in_len and passes that buffer to the driver callback. pdsfc_fw_rpc() casts the buffer to struct fwctl_rpc_pds and then calls pdsfc_validate_rpc(), which reads fields from that structure before checking that the input buffer is large enough to contain it. A short in_len can make pds_fwctl read beyond the allocation. Reject pds RPC buffers that are smaller than struct fwctl_rpc_pds before parsing any pds-specific fields.

Severity

No CVSS data available.

Assigner

Linux

References

3 references

URL	Tags
https://git.kernel.org/stable/c/9e3f18883a98420a3…
https://git.kernel.org/stable/c/0d470d36551058e3f…
https://git.kernel.org/stable/c/e7537735028c3ad4b…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 92c66ee829b99a860a90f62ef16df3e42f92edac , < 9e3f18883a98420a3b8873c6f894bc57e9b98e41 (git) Affected: 92c66ee829b99a860a90f62ef16df3e42f92edac , < 0d470d36551058e3f728574308b815a80bca710f (git) Affected: 92c66ee829b99a860a90f62ef16df3e42f92edac , < e7537735028c3ad4b0bfc02ff8fa2a1a28aa04fe (git)
Linux	Linux	Affected: 6.15 Unaffected: 0 , < 6.15 (semver) Unaffected: 6.18.34 , ≤ 6.18.* (semver) Unaffected: 7.0.11 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/fwctl/pds/main.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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          "versions": [
            {
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              "version": "6.15"
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            },
            {
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            },
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              "version": "7.0.11",
              "versionType": "semver"
            },
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        }
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    "dateReserved": "2026-07-19T07:54:57.033Z",
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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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-954M-592C-4VPC

CVE-2026-64101 (GCVE-0-2026-64101)

Tags

Sightings

Nomenclature