CVE: CVE-2023-53286
Published: 2025-09-16
Description: In the Linux kernel, the following vulnerability has been resolved:

RDMA/mlx5: Return the firmware result upon destroying QP/RQ

Previously when destroying a QP/RQ, the result of the firmware
destruction function was ignored and upper layers weren't informed
about the failure.
Which in turn could lead to various problems since when upper layer
isn't aware of the failure it continues its operation thinking that the
related QP/RQ was successfully destroyed while it actually wasn't,
which could lead to the below kernel WARN.

Currently, we return the correct firmware destruction status to upper
layers which in case of the RQ would be mlx5_ib_destroy_wq() which
was already capable of handling RQ destruction failure or in case of
a QP to destroy_qp_common(), which now would actually warn upon qp
destruction failure.

WARNING: CPU: 3 PID: 995 at drivers/infiniband/core/rdma_core.c:940 uverbs_destroy_ufile_hw+0xcb/0xe0 [ib_uverbs]
Modules linked in: xt_conntrack xt_MASQUERADE nf_conntrack_netlink nfnetlink xt_addrtype iptable_nat nf_nat br_netfilter rpcrdma rdma_ucm ib_iser libiscsi scsi_transport_iscsi rdma_cm ib_umad ib_ipoib iw_cm ib_cm mlx5_ib ib_uverbs ib_core overlay mlx5_core fuse
CPU: 3 PID: 995 Comm: python3 Not tainted 5.16.0-rc5+ #1
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014
RIP: 0010:uverbs_destroy_ufile_hw+0xcb/0xe0 [ib_uverbs]
Code: 41 5c 41 5d 41 5e e9 44 34 f0 e0 48 89 df e8 4c 77 ff ff 49 8b 86 10 01 00 00 48 85 c0 74 a1 4c 89 e7 ff d0 eb 9a 0f 0b eb c1 <0f> 0b be 04 00 00 00 48 89 df e8 b6 f6 ff ff e9 75 ff ff ff 90 0f
RSP: 0018:ffff8881533e3e78 EFLAGS: 00010287
RAX: ffff88811b2cf3e0 RBX: ffff[PII_REDACTED]00 RCX: [PII_REDACTED]
RDX: ffff[PII_REDACTED]80 RSI: ffff8881533e3d30 RDI: ffff888109b101a0
RBP: [PII_REDACTED] R08: ffff888127cb381c R09: 0de[PII_REDACTED]009
R10: ffff888127cb3800 R11: [PII_REDACTED] R12: ffff[PII_REDACTED]80
R13: ffff[PII_REDACTED]50 R14: ffff888100f20660 R15: [PII_REDACTED]
FS:  00007f8be353b740(0000) GS:ffff88852c980000(0000) knlGS:[PII_REDACTED]
CS:  0010 DS: 0000 ES: 0000 CR0: [PII_REDACTED]
CR2: 00007f8bd5b117c0 CR3: 000000012cd8a004 CR4:[PII_REDACTED]370ea0
DR0: [PII_REDACTED] DR1: [PII_REDACTED] DR2: [PII_REDACTED]
DR3: [PII_REDACTED] DR6: 00000000fffe0ff0 DR7: [PII_REDACTED]
Call Trace:
 <TASK>
 ib_uverbs_close+0x1a/0x90 [ib_uverbs]
 __fput+0x82/0x230
 task_work_run+0x59/0x90
 exit_to_user_mode_prepare+0x138/0x140
 syscall_exit_to_user_mode+0x1d/0x50
 ? __x64_sys_close+0xe/0x40
 do_syscall_64+0x4a/0x90
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f8be3ae0abb
Code: 03 00 00 00 0f 05 48 3d 00 f0 ff ff 77 41 c3 48 83 ec 18 89 7c 24 0c e8 83 43 f9 ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 c1 43 f9 ff 8b 44
RSP: 002b:00007ffdb51909c0 EFLAGS: 00000293 ORIG_RAX: [PII_REDACTED]
RAX: [PII_REDACTED] RBX: 0000557bb7f7c020 RCX: 00007f8be3ae0abb
RDX: 0000557bb7c74010 RSI: 0000557bb7f14ca0 RDI: [PII_REDACTED]
RBP: 0000557bb7fbd598 R08: [PII_REDACTED] R09: [PII_REDACTED]
R10: [PII_REDACTED] R11: [PII_REDACTED] R12: 0000557bb7fbd5b8
R13: 0000557bb7fbd5a8 R14: [PII_REDACTED] R15: 0000557bb7f7c020
 </TASK>
CVSS Score: 7.8 (HIGH)
References: https://git.kernel.org/stable/c/04704c201bb08efaf96d7b1396c6864f8984e244; https://git.kernel.org/stable/c/1a650d3ccd79cdd5796edd864683a6b8dd0bf576; https://git.kernel.org/stable/c/22664c06e997087fe37f9ba208008c948571214a