{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "bb12588a38e6db85e01dceadff7bc161fc92e7d2"
            },
            {
              "fixed": "3f7fdf561f1ec3b523c39708df00bd808671668d"
            },
            {
              "fixed": "138eb2f0ef02adfe6ad126afad5b54c56b5046ee"
            },
            {
              "fixed": "3787f4c3e0d813d6c56be9f6dfaf66f8551fb0a7"
            },
            {
              "fixed": "0e7ba617514902501514d577647d866e670dad90"
            },
            {
              "fixed": "001adf2fe87d1ab677c014a97467bbea5153ae5f"
            },
            {
              "fixed": "dc2272c00d7c00ee2a69b57f7ca9caaefcbdb8cd"
            },
            {
              "fixed": "fa1b33fdab3e79dce83721ead3220200a2dbec22"
            },
            {
              "fixed": "961ac0f0c5e414abdd6b33fae84b311d9fde0bd0"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.37"
            },
            {
              "fixed": "5.10.270"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90307.json"
  },
  "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-\u003ebyte_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-\u003etag from beyond the\nend of the buffer. req-\u003etag 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-\u003elun.\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-\u003edata[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.",
  "id": "CVE-2026-90307",
  "modified": "2026-09-19T03:30:31.969703251Z",
  "published": "2026-09-17T16:08:29.045Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/001adf2fe87d1ab677c014a97467bbea5153ae5f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0e7ba617514902501514d577647d866e670dad90"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/138eb2f0ef02adfe6ad126afad5b54c56b5046ee"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3787f4c3e0d813d6c56be9f6dfaf66f8551fb0a7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3f7fdf561f1ec3b523c39708df00bd808671668d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/961ac0f0c5e414abdd6b33fae84b311d9fde0bd0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dc2272c00d7c00ee2a69b57f7ca9caaefcbdb8cd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fa1b33fdab3e79dce83721ead3220200a2dbec22"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90307.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90307"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "RDMA/srp: fix heap information leak on a truncated SRP_CRED_REQ"
}