Overview
About vulnerability
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 unlock in the s1 failure path.
Details
- Affected product:
- AlmaLinux 9.2 ESU , TuxCare 9.6 ESU
- Affected packages:
- kernel @ 5.14.0 (+1 more)
KernelCare state
Live-patch status from KernelCare for each operating system.
| Operating system | Status | Covered kernels |
|---|---|---|
| AlmaLinux 10 | Released |
42 kernels
|
| AlmaLinux 9 | Released |
61 kernels
|
| Debian 13 | Released |
7 kernels
|
| Oracle Linux 9 | Released |
54 kernels
|
| RHEL 10 | Released |
45 kernels
|
| RHEL 9 | Released |
59 kernels
|
| Rocky Linux 10 | Released |
32 kernels
|
| Rocky Linux 9 | Released |
40 kernels
|
| Ubuntu 24.04 | Planned | — |