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CVE-2025-71202— iommu/sva: invalidate stale IOTLB entries for kernel address space

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，该漏洞源于未使内核地址空间的陈旧IOTLB条目失效，可能导致未授权用户触发vfree()等问题。

CVSS 8.8 · High EPSS 0.13% · P3

Possible ATT&CK Techniques 1 AI

T1055 · Process Injection

Affected Version Matrix 6

VendorProduct Version RangeStatus
Linux Linux 2f26e0a9c9860db290d63e9d85c2c8c09813677f< 9f0a7ab700f8620e433b05c57fbd26c92ea186d9 affected
2f26e0a9c9860db290d63e9d85c2c8c09813677f< e37d5a2d60a338c5917c45296bac65da1382eda5 affected
4.4 affected
< 4.4 unaffected
6.18.7≤ 6.18.* unaffected
6.19≤ * unaffected
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I. Basic Information for CVE-2025-71202

Vulnerability Information
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Vulnerability Title
iommu/sva: invalidate stale IOTLB entries for kernel address space
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: iommu/sva: invalidate stale IOTLB entries for kernel address space Introduce a new IOMMU interface to flush IOTLB paging cache entries for the CPU kernel address space. This interface is invoked from the x86 architecture code that manages combined user and kernel page tables, specifically before any kernel page table page is freed and reused. This addresses the main issue with vfree() which is a common occurrence and can be triggered by unprivileged users. While this resolves the primary problem, it doesn't address some extremely rare case related to memory unplug of memory that was present as reserved memory at boot, which cannot be triggered by unprivileged users. The discussion can be found at the link below. Enable SVA on x86 architecture since the IOMMU can now receive notification to flush the paging cache before freeing the CPU kernel page table pages.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
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，该漏洞源于未使内核地址空间的陈旧IOTLB条目失效，可能导致未授权用户触发vfree()等问题。
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 2f26e0a9c9860db290d63e9d85c2c8c09813677f ~ 9f0a7ab700f8620e433b05c57fbd26c92ea186d9 -
Linux Linux 4.4 -

II. Public POCs for CVE-2025-71202

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III. Intelligence Information for CVE-2025-71202

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Same Patch Batch · Linux · 2026-02-14 · 108 CVEs total

CVE-2026-23193 8.8 HIGH scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()
CVE-2026-23172 8.4 HIGH net: wwan: t7xx: fix potential skb->frags overflow in RX path
CVE-2026-23209 7.8 HIGH macvlan: fix error recovery in macvlan_common_newlink()
CVE-2025-71221 7.8 HIGH dmaengine: mmp_pdma: Fix race condition in mmp_pdma_residue()
CVE-2026-23178 7.8 HIGH HID: i2c-hid: fix potential buffer overflow in i2c_hid_get_report()
CVE-2026-23184 7.8 HIGH binder: fix UAF in binder_netlink_report()
CVE-2026-23185 7.8 HIGH wifi: iwlwifi: mld: cancel mlo_scan_start_wk
CVE-2026-23171 7.8 HIGH bonding: fix use-after-free due to enslave fail after slave array update
CVE-2026-23169 7.8 HIGH mptcp: fix race in mptcp_pm_nl_flush_addrs_doit()
CVE-2026-23191 7.8 HIGH ALSA: aloop: Fix racy access at PCM trigger
CVE-2026-23192 7.8 HIGH linkwatch: use __dev_put() in callers to prevent UAF
CVE-2026-23198 7.8 HIGH KVM: Don't clobber irqfd routing type when deassigning irqfd
CVE-2026-23136 7.5 HIGH libceph: reset sparse-read state in osd_fault()
CVE-2025-71204 7.5 HIGH smb/server: fix refcount leak in parse_durable_handle_context()
CVE-2026-23139 7.5 HIGH netfilter: nf_conncount: update last_gc only when GC has been performed
CVE-2026-23148 7.5 HIGH nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference
CVE-2026-23161 7.3 HIGH mm/shmem, swap: fix race of truncate and swap entry split
CVE-2026-23204 7.1 HIGH net/sched: cls_u32: use skb_header_pointer_careful()
CVE-2025-71201 7.1 HIGH netfs: Fix early read unlock of page with EOF in middle
CVE-2026-23180 7.0 HIGH dpaa2-switch: add bounds check for if_id in IRQ handler

Showing top 20 of 108 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-71202

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