CVE-2026-90435
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
RDMA/mlx5: Fix integer overflow of user QP buffer size
In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Fix integer overflow of user QP buffer size set_user_buf_size() computes the QP buffer size by left-shifting the user-supplied rq.wqe_cnt and rq.wqe_shift values as signed integers. A sufficiently large rq.wqe_cnt causes signed integer overflow, which is undefined behavior, and yields a small or negative buf_size, causing ib_umem_get() to map a buffer smaller than the hardware will actually write into. Replace the shifts and addition with check_shl_overflow() and check_add_overflow(), rejecting invalid user inputs. Moreover, guard the identical shift computing qp->sq.offset in _create_user_qp() before set_user_buf_size() is reached.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c | affected | git | ccce6b7ef1d7efc59ccba3421e1339c6e63a3d20 | Unavailable | None listed |
| e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c | affected | git | d99622e40aaa910ade681dfd4dc0fa240a011331 | Unavailable | None listed |
| e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c | affected | git | c845e5e05140ea1bc64a5b1107942d93c876034d | Unavailable | None listed |
| e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c | affected | git | 42fb8aefffff5b458aaa66803364a16e0ea44129 | Unavailable | None listed |
| e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c | affected | git | d7fa2ff72ad1861eac194a4e0075d504ba8c246e | Unavailable | None listed |
| e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c | affected | git | 5b6cfc6d7ff0959dd9766fdc24286a253b59ca77 | Unavailable | None listed |
| e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c | affected | git | f917707f0de0832b8ab582391b1f64e549995c6c | Unavailable | None listed |
| e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c | affected | git | dec47e4b0fe34afdf38caa72b4408ba95502e5de | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3.11 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.11 | Unavailable | None listed |
| 5.10.270 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.221 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.188 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.157 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.110 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.52 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.6 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |