HighFix available
RDMA/mlx5: Fix undefined shift of user RQ WQE size
Type: advisorySources: OSV
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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.261, 5.15.212, 6.1.178, 6.12.97, 6.18.40, 6.6.145, 7.1.5
- CVEs
- CVE-2026-74297
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 16:29 UTC · Revision 1
Source evidence
RDMA/mlx5: Fix undefined shift of user RQ WQE size
core-osv · Original sourcePublished 15 Aug 2026, 05:58 UTC
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.
osv:CVE-2026-74297
Kernel
Fixed versions: 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5
Complete source record
{
"id": "49f6b38cfc7d406621ce8a258535218335b3936bdd9ad7f2313de309d51d8ddc",
"url": "https://osv.dev/vulnerability/CVE-2026-74297",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "RDMA/mlx5: Fix undefined shift of user RQ WQE size",
"summary": "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.",
"evidence": "osv:CVE-2026-74297",
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"evidence": "/affected/1/ranges"
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"package": {
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"modified": "2026-10-28T02:30:30.465967946Z",
"provider": "osv",
"references": [
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"https://git.kernel.org/stable/c/4b87a2497276a72fd63028e7419abf0fb7ed837b",
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"https://git.kernel.org/stable/c/b746f949c2ac2b041102836095d6d4a2ef21fa75",
"https://git.kernel.org/stable/c/c1dbf52d24a8cb1aa56780ba51b72e7d495f258c",
"https://git.kernel.org/stable/c/d881d60223aac8fdc12b227d89c76e131e92a9cd",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74297.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-74297",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74297.json"
}
},
"related_cves": [
{
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"evidence": "/id"
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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 497376,
"published_at": "2026-08-15T05:58:01.414+00:00"
}