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CVE-2025-22086— RDMA/mlx5: Fix mlx5_poll_one() cur_qp update flow

EPSS 0.10% · P28
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I. Basic Information for CVE-2025-22086

Vulnerability Information
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Vulnerability Title
RDMA/mlx5: Fix mlx5_poll_one() cur_qp update flow
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Fix mlx5_poll_one() cur_qp update flow When cur_qp isn't NULL, in order to avoid fetching the QP from the radix tree again we check if the next cqe QP is identical to the one we already have. The bug however is that we are checking if the QP is identical by checking the QP number inside the CQE against the QP number inside the mlx5_ib_qp, but that's wrong since the QP number from the CQE is from FW so it should be matched against mlx5_core_qp which is our FW QP number. Otherwise we could use the wrong QP when handling a CQE which could cause the kernel trace below. This issue is mainly noticeable over QPs 0 & 1, since for now they are the only QPs in our driver whereas the QP number inside mlx5_ib_qp doesn't match the QP number inside mlx5_core_qp. BUG: kernel NULL pointer dereference, address: 0000000000000012 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: Oops: 0000 [#1] SMP CPU: 0 UID: 0 PID: 7927 Comm: kworker/u62:1 Not tainted 6.14.0-rc3+ #189 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 Workqueue: ib-comp-unb-wq ib_cq_poll_work [ib_core] RIP: 0010:mlx5_ib_poll_cq+0x4c7/0xd90 [mlx5_ib] Code: 03 00 00 8d 58 ff 21 cb 66 39 d3 74 39 48 c7 c7 3c 89 6e a0 0f b7 db e8 b7 d2 b3 e0 49 8b 86 60 03 00 00 48 c7 c7 4a 89 6e a0 <0f> b7 5c 98 02 e8 9f d2 b3 e0 41 0f b7 86 78 03 00 00 83 e8 01 21 RSP: 0018:ffff88810511bd60 EFLAGS: 00010046 RAX: 0000000000000010 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff88885fa1b3c0 RDI: ffffffffa06e894a RBP: 00000000000000b0 R08: 0000000000000000 R09: ffff88810511bc10 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88810d593000 R13: ffff88810e579108 R14: ffff888105146000 R15: 00000000000000b0 FS: 0000000000000000(0000) GS:ffff88885fa00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000012 CR3: 00000001077e6001 CR4: 0000000000370eb0 Call Trace: <TASK> ? __die+0x20/0x60 ? page_fault_oops+0x150/0x3e0 ? exc_page_fault+0x74/0x130 ? asm_exc_page_fault+0x22/0x30 ? mlx5_ib_poll_cq+0x4c7/0xd90 [mlx5_ib] __ib_process_cq+0x5a/0x150 [ib_core] ib_cq_poll_work+0x31/0x90 [ib_core] process_one_work+0x169/0x320 worker_thread+0x288/0x3a0 ? work_busy+0xb0/0xb0 kthread+0xd7/0x1f0 ? kthreads_online_cpu+0x130/0x130 ? kthreads_online_cpu+0x130/0x130 ret_from_fork+0x2d/0x50 ? kthreads_online_cpu+0x130/0x130 ret_from_fork_asm+0x11/0x20 </TASK>
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于mlx5_poll_one中cur_qp更新逻辑错误，可能导致空指针解引用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c ~ 3b97d77049856865ac5ce8ffbc6e716928310f7f -
LinuxLinux 3.11 -

II. Public POCs for CVE-2025-22086

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III. Intelligence Information for CVE-2025-22086

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Same Patch Batch · Linux · 2025-04-16 · 127 CVEs total

CVE-2025-220408.8 HIGHksmbd: fix session use-after-free in multichannel connection
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CVE-2025-22093drm/amd/display: avoid NPD when ASIC does not support DMUB
CVE-2025-22107net: dsa: sja1105: fix kasan out-of-bounds warning in sja1105_table_delete_entry()
CVE-2025-22106vmxnet3: unregister xdp rxq info in the reset path
CVE-2025-22105bonding: check xdp prog when set bond mode
CVE-2025-22104ibmvnic: Use kernel helpers for hex dumps
CVE-2025-22103net: fix NULL pointer dereference in l3mdev_l3_rcv
CVE-2025-22102Bluetooth: btnxpuart: Fix kernel panic during FW release
CVE-2025-22100drm/panthor: Fix race condition when gathering fdinfo group samples
CVE-2025-22101net: libwx: fix Tx L4 checksum
CVE-2025-22099drm: xlnx: zynqmp_dpsub: Add NULL check in zynqmp_audio_init
CVE-2025-22097drm/vkms: Fix use after free and double free on init error
CVE-2025-22098drm: zynqmp_dp: Fix a deadlock in zynqmp_dp_ignore_hpd_set()
CVE-2025-22096drm/msm/gem: Fix error code msm_parse_deps()
CVE-2025-22095PCI: brcmstb: Fix error path after a call to regulator_bulk_get()
CVE-2025-22094powerpc/perf: Fix ref-counting on the PMU 'vpa_pmu'
CVE-2025-22082iio: backend: make sure to NULL terminate stack buffer
CVE-2025-22081fs/ntfs3: Fix a couple integer overflows on 32bit systems
CVE-2025-22080fs/ntfs3: Prevent integer overflow in hdr_first_de()

Showing top 20 of 127 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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