From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-cve-announce@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: CVE-2025-21885: RDMA/bnxt_re: Fix the page details for the srq created by kernel consumers
Date: Thu, 27 Mar 2025 15:58:19 +0100 [thread overview]
Message-ID: <2025032713-CVE-2025-21885-be9d@gregkh> (raw)
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
reply other threads:[~2025-03-27 14:58 UTC|newest]
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