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CVE-2026-45862— iommu/vt-d: Flush cache for PASID table before using it

CVSS 7.8 · High EPSS 0.01% · P2

Affected Version Matrix 25

VendorProductVersion RangeStatus
LinuxLinux7e00b52c8cdd9d3a985d63d72ecae7bde6314883< cd75e77125c8a51754ca4cd60b4ca083ed735d1daffected
5c65f097124770c3e5b9b83ed1a8b68c119bc7b5< 0616137b70e6d9a547d4b60df8e1b64e36d83661affected
2bed9455db7cc0ab7ece6b3d846472097b52855a< 36990407cdd257473607e33802d00e978af2759eaffected
194b3348bdbb7db65375c72f3f774aee4cc6614e< c93f23375d8c410954b0df825e814b632fd62b9daffected
194b3348bdbb7db65375c72f3f774aee4cc6614e< 5962c30a6f05ea1ab73f039e235bb30716243517affected
194b3348bdbb7db65375c72f3f774aee4cc6614e< 36244dfd3853f7bf89d03b8e90d56b23ce7fbc16affected
194b3348bdbb7db65375c72f3f774aee4cc6614e< d15cda135148ea7ba929cfdbcf208182bc29a7aaaffected
194b3348bdbb7db65375c72f3f774aee4cc6614e< 22d169bdd2849fe6bd18c2643742e1c02be6451caffected
… +17 more rows
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I. Basic Information for CVE-2026-45862

Vulnerability Information
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Vulnerability Title
iommu/vt-d: Flush cache for PASID table before using it
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Flush cache for PASID table before using it When writing the address of a freshly allocated zero-initialized PASID table to a PASID directory entry, do that after the CPU cache flush for this PASID table, not before it, to avoid the time window when this PASID table may be already used by non-coherent IOMMU hardware while its contents in RAM is still some random old data, not zero-initialized.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
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，该漏洞源于在PASID目录条目写入PASID表地址前未执行CPU缓存刷新，可能导致非一致性IOMMU硬件在RAM内容仍为随机旧数据时使用该表。
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 7e00b52c8cdd9d3a985d63d72ecae7bde6314883 ~ cd75e77125c8a51754ca4cd60b4ca083ed735d1d -
LinuxLinux 6.3 -

II. Public POCs for CVE-2026-45862

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III. Intelligence Information for CVE-2026-45862

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Patches & Fixes for CVE-2026-45862 (8)

Same Patch Batch · Linux · 2026-05-27 · 275 CVEs total

CVE-2026-458989.8 CRITICALRDMA/iwcm: Fix workqueue list corruption by removing work_list
CVE-2026-459889.8 CRITICALrxrpc: Fix re-decryption of RESPONSE packets
CVE-2026-459729.8 CRITICALsmb: client: fix potential UAF and double free in smb2_open_file()
CVE-2026-460399.8 CRITICALrxgk: Fix potential integer overflow in length check
CVE-2026-460439.1 CRITICALRDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv
CVE-2026-459458.8 HIGHiommu/vt-d: Fix race condition during PASID entry replacement
CVE-2026-460568.8 HIGHBluetooth: hci_event: fix potential UAF in SSP passkey handlers
CVE-2026-460378.2 HIGHipv4: icmp: validate reply type before using icmp_pointers
CVE-2026-458438.2 HIGHslip: bound decode() reads against the compressed packet length
CVE-2026-460108.1 HIGHrxrpc: Fix error handling in rxgk_extract_token()
CVE-2026-460998.1 HIGHnet: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels
CVE-2026-460767.9 HIGHKVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1
CVE-2026-459597.8 HIGHcrypto: ccp - Fix a crash due to incorrect cleanup usage of kfree
CVE-2026-460657.8 HIGHfbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info
CVE-2026-460367.8 HIGHvfio/cdx: Serialize VFIO_DEVICE_SET_IRQS with a per-device mutex
CVE-2026-459517.8 HIGHbpf: Fix a potential use-after-free of BTF object
CVE-2026-458617.8 HIGHgfs2: Fix slab-use-after-free in qd_put
CVE-2026-459107.8 HIGHRDMA/rxe: Fix race condition in QP timer handlers
CVE-2026-459567.8 HIGHdrm/exynos: vidi: use priv->vidi_dev for ctx lookup in vidi_connection_ioctl()
CVE-2026-459097.8 HIGHclk: mediatek: Drop __initconst from gates

Showing top 20 of 275 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-45862

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