CVE-2026-45862— iommu/vt-d: Flush cache for PASID table before using it
Possible ATT&CK Techniques 2AI
T1068 · Exploitation for Privilege Escalation T1201 · Password Policy DiscoveryAffected Version Matrix 25
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 7e00b52c8cdd9d3a985d63d72ecae7bde6314883< cd75e77125c8a51754ca4cd60b4ca083ed735d1d | affected |
5c65f097124770c3e5b9b83ed1a8b68c119bc7b5< 0616137b70e6d9a547d4b60df8e1b64e36d83661 | affected | ||
2bed9455db7cc0ab7ece6b3d846472097b52855a< 36990407cdd257473607e33802d00e978af2759e | affected | ||
194b3348bdbb7db65375c72f3f774aee4cc6614e< c93f23375d8c410954b0df825e814b632fd62b9d | affected | ||
194b3348bdbb7db65375c72f3f774aee4cc6614e< 5962c30a6f05ea1ab73f039e235bb30716243517 | affected | ||
194b3348bdbb7db65375c72f3f774aee4cc6614e< 36244dfd3853f7bf89d03b8e90d56b23ce7fbc16 | affected | ||
194b3348bdbb7db65375c72f3f774aee4cc6614e< d15cda135148ea7ba929cfdbcf208182bc29a7aa | affected | ||
194b3348bdbb7db65375c72f3f774aee4cc6614e< 22d169bdd2849fe6bd18c2643742e1c02be6451c | affected | ||
| … +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: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/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
II. Public POCs for CVE-2026-45862
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-45862 (8)
Same Patch Batch · Linux · 2026-05-27 · 275 CVEs total
| CVE-2026-45898 | 9.8 CRITICAL | RDMA/iwcm: Fix workqueue list corruption by removing work_list |
| CVE-2026-45988 | 9.8 CRITICAL | rxrpc: Fix re-decryption of RESPONSE packets |
| CVE-2026-45972 | 9.8 CRITICAL | smb: client: fix potential UAF and double free in smb2_open_file() |
| CVE-2026-46039 | 9.8 CRITICAL | rxgk: Fix potential integer overflow in length check |
| CVE-2026-46043 | 9.1 CRITICAL | RDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv |
| CVE-2026-45945 | 8.8 HIGH | iommu/vt-d: Fix race condition during PASID entry replacement |
| CVE-2026-46056 | 8.8 HIGH | Bluetooth: hci_event: fix potential UAF in SSP passkey handlers |
| CVE-2026-46037 | 8.2 HIGH | ipv4: icmp: validate reply type before using icmp_pointers |
| CVE-2025-71311 | 8.2 HIGH | fs/ntfs3: Initialize new folios before use |
| CVE-2026-45843 | 8.2 HIGH | slip: bound decode() reads against the compressed packet length |
| CVE-2026-46010 | 8.1 HIGH | rxrpc: Fix error handling in rxgk_extract_token() |
| CVE-2026-46099 | 8.1 HIGH | net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels |
| CVE-2026-46076 | 7.9 HIGH | KVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1 |
| CVE-2026-45935 | 7.8 HIGH | fs/ntfs3: Fix slab-out-of-bounds read in DeleteIndexEntryRoot |
| CVE-2026-45909 | 7.8 HIGH | clk: mediatek: Drop __initconst from gates |
| CVE-2026-45956 | 7.8 HIGH | drm/exynos: vidi: use priv->vidi_dev for ctx lookup in vidi_connection_ioctl() |
| CVE-2026-45910 | 7.8 HIGH | RDMA/rxe: Fix race condition in QP timer handlers |
| CVE-2026-45959 | 7.8 HIGH | crypto: ccp - Fix a crash due to incorrect cleanup usage of kfree |
| CVE-2026-45933 | 7.8 HIGH | bpf: Preserve id of register in sync_linked_regs() |
| CVE-2026-45861 | 7.8 HIGH | gfs2: Fix slab-use-after-free in qd_put |
Showing top 20 of 275 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
Same vendor: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
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