RDMA/mlx5: Fix undefined shift of user RQ WQE size
Summary
| CVE | CVE-2026-74297 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-15 06:22:29 UTC |
| Updated | 2026-08-17 06:19:23 UTC |
| Description | 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. |
Risk And Classification
Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.001290000 probability, percentile 0.029820000 (date 2026-08-17)
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Secondary | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | CNA | DECLARED | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c 9fff54929cc00849d738faa99f06c32399aeb026 git | Not specified |
| CNA | Linux | Linux | affected e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c b746f949c2ac2b041102836095d6d4a2ef21fa75 git | Not specified |
| CNA | Linux | Linux | affected e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c c1dbf52d24a8cb1aa56780ba51b72e7d495f258c git | Not specified |
| CNA | Linux | Linux | affected e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c 6fc874fdfb366bfb11c62e6af9a831c8be59ddda git | Not specified |
| CNA | Linux | Linux | affected e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c 42f3d2c8c18b92ea33e506a38b64f1a8986c2823 git | Not specified |
| CNA | Linux | Linux | affected e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c 4b87a2497276a72fd63028e7419abf0fb7ed837b git | Not specified |
| CNA | Linux | Linux | affected e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c b732db02a2b04cde393638df19de6251ce62a74e git | Not specified |
| CNA | Linux | Linux | affected e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c d881d60223aac8fdc12b227d89c76e131e92a9cd git | Not specified |
| CNA | Linux | Linux | affected 3.11 | Not specified |
| CNA | Linux | Linux | unaffected 3.11 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.261 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.212 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.178 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.145 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.97 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.40 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1.5 7.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/b732db02a2b04cde393638df19de6251ce62a74e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/4b87a2497276a72fd63028e7419abf0fb7ed837b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/c1dbf52d24a8cb1aa56780ba51b72e7d495f258c | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/d881d60223aac8fdc12b227d89c76e131e92a9cd | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/42f3d2c8c18b92ea33e506a38b64f1a8986c2823 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/b746f949c2ac2b041102836095d6d4a2ef21fa75 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/6fc874fdfb366bfb11c62e6af9a831c8be59ddda | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/9fff54929cc00849d738faa99f06c32399aeb026 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.