GHSA-3R6V-V38P-C2R8

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-15 06:32
VLAI
Details

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

sunrpc: fix uninitialized xprt_create_args structure

The xprt_create_args structure is allocated on the stack without initialization in rpc_sysfs_xprt_switch_add_xprt_store(). While some fields are manually populated, critical fields like srcaddr, bc_xps, and flags contain uninitialized stack garbage.

This can lead to: 1. Kernel panic when xs_setup_xprt() dereferences garbage srcaddr 2. Information leak if srcaddr points to sensitive stack data 3. Unpredictable behavior if flags has random bits set

The fix is to zero-initialize the structure to ensure all unused fields are NULL/0, preventing the transport setup code from acting on garbage data.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-72150"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:21:32Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsunrpc: fix uninitialized xprt_create_args structure\n\nThe xprt_create_args structure is allocated on the stack without\ninitialization in rpc_sysfs_xprt_switch_add_xprt_store(). While some\nfields are manually populated, critical fields like srcaddr, bc_xps,\nand flags contain uninitialized stack garbage.\n\nThis can lead to:\n1. Kernel panic when xs_setup_xprt() dereferences garbage srcaddr\n2. Information leak if srcaddr points to sensitive stack data\n3. Unpredictable behavior if flags has random bits set\n\nThe fix is to zero-initialize the structure to ensure all unused\nfields are NULL/0, preventing the transport setup code from acting\non garbage data.",
  "id": "GHSA-3r6v-v38p-c2r8",
  "modified": "2026-08-15T06:32:14Z",
  "published": "2026-08-15T06:32:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72150"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/17d90b68c3a3d7d7e95b49e1fe9381a723f637a8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7d3ce3bd23c062a7c1c6d372d1b08e48b9e17cc3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/933654508b2bc36e2c3c086c0365e2403fb2141f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}



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