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RDMA/srpt: fix integer overflow in immediate data length check

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: RDMA/srpt: fix integer overflow in immediate data length check imm_buf->len is a user-controlled uint32_t received from the network. Adding it to imm_data_offset without overflow checking allows a malicious initiator to send len=0xFFFFFFFF, causing req_size to wrap around to a small value, bypassing the bounds check, and subsequently passing a ~4GB length to sg_init_one(). Use check_add_overflow() to detect wrapping before the comparison.

Announced Source revision 1
Original source ↗

CVE-2026-74394

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-74394

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5dabcd0456d7ee17c2c7a17d7c2305444d2b9639",
        "lessThan": "c82c860f8c8e4f4f454c9f14d0ad0c0466965f7d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5dabcd0456d7ee17c2c7a17d7c2305444d2b9639",
        "lessThan": "3efa5301137140a3ca3677a9098c0a93a0acfd49",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5dabcd0456d7ee17c2c7a17d7c2305444d2b9639",
        "lessThan": "067b9556eeb007f28b7c2033b4dcde5b6d88418f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5dabcd0456d7ee17c2c7a17d7c2305444d2b9639",
        "lessThan": "dcf7a986f377cce0749ed53f1d64195fbd5fdf91",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5dabcd0456d7ee17c2c7a17d7c2305444d2b9639",
        "lessThan": "07dec3f6dcb6c6cc891162d252b800eb0e6d5e8e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5dabcd0456d7ee17c2c7a17d7c2305444d2b9639",
        "lessThan": "65572fbd86033ae2370125593d59b8be34253aaf",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5dabcd0456d7ee17c2c7a17d7c2305444d2b9639",
        "lessThan": "72497172a4799119a0282a5eb5e2b8ddcc821921",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5dabcd0456d7ee17c2c7a17d7c2305444d2b9639",
        "lessThan": "eb4ecdf631fe00e8020bf461503cb9b7017ed796",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/infiniband/ulp/srpt/ib_srpt.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.0"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.0",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.261",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.212",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.178",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.145",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.97",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.40",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.1.5",
        "versionType": "semver",
        "lessThanOrEqual": "7.1.*"
      },
      {
        "status": "unaffected",
        "version": "7.2",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/infiniband/ulp/srpt/ib_srpt.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-74394

Source reference: /cveMetadata/cveId

Publisher severity

critical

Source reference: /containers/cna/metrics

Event
#33135 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement