AZL-88836
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-88836.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-88836
- Upstream
- Published
- 2026-05-28T10:16:33Z
- Modified
- 2026-08-28T17:48:09Z
- Summary
- CVE-2026-46176 affecting package kernel for versions less than 6.6.141.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
RDMA/mlx5: Fix error path fall-through in mlx5_ib_dev_res_srq_init()
mlx5_ib_dev_res_srq_init() allocates two SRQs, s0 and s1. When ib_create_srq() fails for s1, the error branch destroys s0 but falls through and unconditionally assigns the freed s0 and the ERR_PTR s1 to devr->s0 and devr->s1.
This leads to several problems: the lock-free fast path checks "if (devr->s1) return 0;" and treats the ERR_PTR as already initialised; users in mlx5_ib_create_qp() dereference the freed SRQ or ERR_PTR via to_msrq(devr->s0)->msrq.srqn; and mlx5_ib_dev_res_cleanup() dereferences the ERR_PTR and double-frees s0 on teardown.
Fix by adding the same
goto unlockin the s1 failure path. - References