CVE-2025-22010: Linux kernel · RDMA/hns: Fix soft lockup during bt pages loop
Source GCVE Database
Not known to be exploited · CVSS 5.5 Medium.
Data as of 30 Oct 2026, 01:27 UTC
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 8 Apr 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
AI-suggested
A fix is available that adds a conditional reschedule call in the affected loop to prevent soft lockups during large buffer allocations. Users should apply the official Linux kernel update that includes this patch once it is released. Until then, monitoring for kernel updates from the vendor or distribution is recommended. No other mitigation or workaround is indicated.
Description
CVE-2025-22010 addresses a soft lockup vulnerability in the Linux kernel's RDMA hns driver during the allocation of large buffer pages. The issue occurs when the driver runs a long for-loop to allocate and map buffer pages for large memory regions (e.g., over 100GB), causing the CPU to become stuck and trigger a watchdog soft lockup. The fix introduces a conditional reschedule call (cond_resched()) during the loop to prevent the CPU from being stuck without significantly impacting performance for normal-sized buffers.
References
- nvd.nist.gov/vuln/detail/CVE-2025-22010 (opens in a new tab)
- git.kernel.org/stable/c/13a52f6c9ff99f7d88f81da535cb4e85eade662b (opens in a new tab)
- git.kernel.org/stable/c/25655580136de59ec89f09089dd28008ea440fc9 (opens in a new tab)
- git.kernel.org/stable/c/4104b0023ff66b5df900d23dbf38310893deca79 (opens in a new tab)
- git.kernel.org/stable/c/461eb4ddede266df8f181f578732bb01742c3fd6 (opens in a new tab)
- git.kernel.org/stable/c/975355faba56c0751292ed15a90c3e2c7dc0aad6 (opens in a new tab)
- git.kernel.org/stable/c/9ab20fec7a1ce3057ad86afd27bfd08420b7cd11 (opens in a new tab)
- git.kernel.org/stable/c/efe544462fc0b499725364f90bd0f8bbf16f861a (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/05/msg00030.html (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/05/msg00045.html (opens in a new tab)