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RDMA/mlx5: Fix undefined shift of user RQ WQE size

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Fix undefined shift of user RQ WQE size set_rq_size() computes the RQ WQE size as "1 << rq_wqe_shift" based on the user-provided rq_wqe_shift, which is only checked to be greater than 32, so shifts of 32 are still accepted. A shift of 31 also overflows a signed integer, leading to undefined behavior. Use check_shl_overflow() to compute the RQ WQE size and reject any invalid values.

Announced Group revision 1
Original source ↗

CVE-2026-74297

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-2026-74297

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": "e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c",
        "lessThan": "9fff54929cc00849d738faa99f06c32399aeb026",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c",
        "lessThan": "b746f949c2ac2b041102836095d6d4a2ef21fa75",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c",
        "lessThan": "c1dbf52d24a8cb1aa56780ba51b72e7d495f258c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c",
        "lessThan": "6fc874fdfb366bfb11c62e6af9a831c8be59ddda",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c",
        "lessThan": "42f3d2c8c18b92ea33e506a38b64f1a8986c2823",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c",
        "lessThan": "4b87a2497276a72fd63028e7419abf0fb7ed837b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c",
        "lessThan": "b732db02a2b04cde393638df19de6251ce62a74e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c",
        "lessThan": "d881d60223aac8fdc12b227d89c76e131e92a9cd",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/infiniband/hw/mlx5/qp.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.11"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.11",
        "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/hw/mlx5/qp.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-74297

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#33088 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. CVE-2026-74297 · Revision 1Source updated