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CVE-2025-22010— RDMA/hns: Fix soft lockup during bt pages loop

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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，该漏洞源于在分配bt页面时循环次数过多，可能导致软锁死。

AI Predicted 5.9 Difficulty: Easy EPSS 0.16% · P5

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 38389eaa4db192648916464b60f6086d6bbaa6de< 461eb4ddede266df8f181f578732bb01742c3fd6 affected
38389eaa4db192648916464b60f6086d6bbaa6de< efe544462fc0b499725364f90bd0f8bbf16f861a affected
38389eaa4db192648916464b60f6086d6bbaa6de< 4104b0023ff66b5df900d23dbf38310893deca79 affected
38389eaa4db192648916464b60f6086d6bbaa6de< 975355faba56c0751292ed15a90c3e2c7dc0aad6 affected
38389eaa4db192648916464b60f6086d6bbaa6de< 13a52f6c9ff99f7d88f81da535cb4e85eade662b affected
38389eaa4db192648916464b60f6086d6bbaa6de< 9ab20fec7a1ce3057ad86afd27bfd08420b7cd11 affected
38389eaa4db192648916464b60f6086d6bbaa6de< 25655580136de59ec89f09089dd28008ea440fc9 affected
5.3 affected
… +8 more rows
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I. Basic Information for CVE-2025-22010

Vulnerability Information
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Vulnerability Title
RDMA/hns: Fix soft lockup during bt pages loop
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/hns: Fix soft lockup during bt pages loop Driver runs a for-loop when allocating bt pages and mapping them with buffer pages. When a large buffer (e.g. MR over 100GB) is being allocated, it may require a considerable loop count. This will lead to soft lockup: watchdog: BUG: soft lockup - CPU#27 stuck for 22s! ... Call trace: hem_list_alloc_mid_bt+0x124/0x394 [hns_roce_hw_v2] hns_roce_hem_list_request+0xf8/0x160 [hns_roce_hw_v2] hns_roce_mtr_create+0x2e4/0x360 [hns_roce_hw_v2] alloc_mr_pbl+0xd4/0x17c [hns_roce_hw_v2] hns_roce_reg_user_mr+0xf8/0x190 [hns_roce_hw_v2] ib_uverbs_reg_mr+0x118/0x290 watchdog: BUG: soft lockup - CPU#35 stuck for 23s! ... Call trace: hns_roce_hem_list_find_mtt+0x7c/0xb0 [hns_roce_hw_v2] mtr_map_bufs+0xc4/0x204 [hns_roce_hw_v2] hns_roce_mtr_create+0x31c/0x3c4 [hns_roce_hw_v2] alloc_mr_pbl+0xb0/0x160 [hns_roce_hw_v2] hns_roce_reg_user_mr+0x108/0x1c0 [hns_roce_hw_v2] ib_uverbs_reg_mr+0x120/0x2bc Add a cond_resched() to fix soft lockup during these loops. In order not to affect the allocation performance of normal-size buffer, set the loop count of a 100GB MR as the threshold to call cond_resched().
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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，该漏洞源于在分配bt页面时循环次数过多，可能导致软锁死。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 38389eaa4db192648916464b60f6086d6bbaa6de ~ 461eb4ddede266df8f181f578732bb01742c3fd6 -
Linux Linux 5.3 -

II. Public POCs for CVE-2025-22010

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III. Intelligence Information for CVE-2025-22010

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Patches & Fixes for CVE-2025-22010 (3)

Same Patch Batch · Linux · 2025-04-08 · 10 CVEs total

CVE-2025-22012 8.8 HIGH Revert "arm64: dts: qcom: sdm845: Affirm IDR0.CCTW on apps_smmu"
CVE-2025-22015 7.8 HIGH mm/migrate: fix shmem xarray update during migration
CVE-2025-22013 7.3 HIGH KVM: arm64: Unconditionally save+flush host FPSIMD/SVE/SME state
CVE-2025-22017 devlink: fix xa_alloc_cyclic() error handling
CVE-2025-22016 dpll: fix xa_alloc_cyclic() error handling
CVE-2025-22014 soc: qcom: pdr: Fix the potential deadlock
CVE-2025-22011 ARM: dts: bcm2711: Fix xHCI power-domain
CVE-2025-22009 regulator: dummy: force synchronous probing
CVE-2025-22008 regulator: check that dummy regulator has been probed before using it

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-22010

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