| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2025-21885: RDMA/bnxt_re: Fix the page details for the srq created by kernel consumers |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| RDMA/bnxt_re: Fix the page details for the srq created by kernel consumers |
| |
| While using nvme target with use_srq on, below kernel panic is noticed. |
| |
| [ 549.698111] bnxt_en 0000:41:00.0 enp65s0np0: FEC autoneg off encoding: Clause 91 RS(544,514) |
| [ 566.393619] Oops: divide error: 0000 [#1] PREEMPT SMP NOPTI |
| .. |
| [ 566.393799] <TASK> |
| [ 566.393807] ? __die_body+0x1a/0x60 |
| [ 566.393823] ? die+0x38/0x60 |
| [ 566.393835] ? do_trap+0xe4/0x110 |
| [ 566.393847] ? bnxt_qplib_alloc_init_hwq+0x1d4/0x580 [bnxt_re] |
| [ 566.393867] ? bnxt_qplib_alloc_init_hwq+0x1d4/0x580 [bnxt_re] |
| [ 566.393881] ? do_error_trap+0x7c/0x120 |
| [ 566.393890] ? bnxt_qplib_alloc_init_hwq+0x1d4/0x580 [bnxt_re] |
| [ 566.393911] ? exc_divide_error+0x34/0x50 |
| [ 566.393923] ? bnxt_qplib_alloc_init_hwq+0x1d4/0x580 [bnxt_re] |
| [ 566.393939] ? asm_exc_divide_error+0x16/0x20 |
| [ 566.393966] ? bnxt_qplib_alloc_init_hwq+0x1d4/0x580 [bnxt_re] |
| [ 566.393997] bnxt_qplib_create_srq+0xc9/0x340 [bnxt_re] |
| [ 566.394040] bnxt_re_create_srq+0x335/0x3b0 [bnxt_re] |
| [ 566.394057] ? srso_return_thunk+0x5/0x5f |
| [ 566.394068] ? __init_swait_queue_head+0x4a/0x60 |
| [ 566.394090] ib_create_srq_user+0xa7/0x150 [ib_core] |
| [ 566.394147] nvmet_rdma_queue_connect+0x7d0/0xbe0 [nvmet_rdma] |
| [ 566.394174] ? lock_release+0x22c/0x3f0 |
| [ 566.394187] ? srso_return_thunk+0x5/0x5f |
| |
| Page size and shift info is set only for the user space SRQs. |
| Set page size and page shift for kernel space SRQs also. |
| |
| The Linux kernel CVE team has assigned CVE-2025-21885 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.7 with commit 0c4dcd602817502bb3dced7a834a13ef717d65a4 and fixed in 6.12.18 with commit 722c3db62bf60cd23acbdc8c4f445bfedae4498e |
| Issue introduced in 5.7 with commit 0c4dcd602817502bb3dced7a834a13ef717d65a4 and fixed in 6.13.6 with commit 2cf8e6b52aecb8fbb71c41fe5add3212814031a2 |
| Issue introduced in 5.7 with commit 0c4dcd602817502bb3dced7a834a13ef717d65a4 and fixed in 6.14 with commit b66535356a4834a234f99e16a97eb51f2c6c5a7d |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2025-21885 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| drivers/infiniband/hw/bnxt_re/ib_verbs.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/722c3db62bf60cd23acbdc8c4f445bfedae4498e |
| https://git.kernel.org/stable/c/2cf8e6b52aecb8fbb71c41fe5add3212814031a2 |
| https://git.kernel.org/stable/c/b66535356a4834a234f99e16a97eb51f2c6c5a7d |
