{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-90307",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-90307"
  ],
  "published": "2026-09-17T16:10:40Z",
  "summary": "RDMA/srp: fix heap information leak on a truncated SRP_CRED_REQ",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/srp: fix heap information leak on a truncated SRP_CRED_REQ\n\nsrp_recv_done() passes wc->byte_len to srp_process_rsp(). It passes\nnothing to srp_process_cred_req() and srp_process_aer_req(), which read\nfixed-size fields from the receive buffer without checking that those\nfields were received.\n\nThe buffer size is max_ti_iu_len, which comes from the login response\nand is not validated. A target that advertises 8 and then sends an\n8-byte SRP_CRED_REQ makes the initiator read req->tag from beyond the\nend of the buffer. req->tag is copied into the SRP_CRED_RSP and sent\nback, so those bytes reach the target. SRP_AER_REQ behaves the same way\nand also reads req->lun.\n\nThe leak is 8 bytes per response. max_ti_iu_len also decides which slab\ncache the buffer comes from. With 8 the buffer is a kmalloc-8 object and\nthe read is entirely outside it:\n\n  BUG: KASAN: slab-out-of-bounds in srp_recv_done+0x172b/0x1aa0\n  Read of size 8 at addr ffff888104714da8 by task kworker/u8:3/50\n   which belongs to the cache kmalloc-8 of size 8\n  The buggy address is located 0 bytes to the right of\n   allocated 8-byte region [ffff888104714da0, ffff888104714da8)\n\nWithout KASAN the returned bytes are whatever is next in the slab. One\nrun returned \".strtab\".\n\nrsp->data[3] in srp_process_rsp() has the same problem: only\nresp_data_len is checked before it is read.\n\nDrop a request that is shorter than the structure being parsed, and\ncheck byte_len before the tsk_mgmt read.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.188",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-90307"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3f7fdf561f1ec3b523c39708df00bd808671668d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/138eb2f0ef02adfe6ad126afad5b54c56b5046ee"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3787f4c3e0d813d6c56be9f6dfaf66f8551fb0a7"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0e7ba617514902501514d577647d866e670dad90"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/001adf2fe87d1ab677c014a97467bbea5153ae5f"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/dc2272c00d7c00ee2a69b57f7ca9caaefcbdb8cd"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/fa1b33fdab3e79dce83721ead3220200a2dbec22"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/961ac0f0c5e414abdd6b33fae84b311d9fde0bd0"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-09-17T16:10:40Z"
  }
}