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CVE-2026-68325— iommu/amd: Bound the early ACPI HID map

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基金会开源的一个操作系统内核。 Linux kernel 4.7版本存在安全漏洞，该漏洞源于ivrs_acpihid命令行解析器在向固定大小的early_acpihid_map数组添加条目时未检查容量便递增映射大小，可能导致数组越界写入。

AI Predicted 4.3 Difficulty: Moderate EPSS 0.18% · P8

Possible ATT&CK Techniques 1 AI

T1205.003

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux ca3bf5d47cec8b7614bcb2e9132c40081d6d81db< 9ae6b1b972ce01d3316c8a5f7f58c8b3668cc6bb affected
ca3bf5d47cec8b7614bcb2e9132c40081d6d81db< e5e0098f8cd82f8b3c8687a8f686309565d51745 affected
ca3bf5d47cec8b7614bcb2e9132c40081d6d81db< afe7ea0520c49586703f210865ace2d70b017e48 affected
ca3bf5d47cec8b7614bcb2e9132c40081d6d81db< 1e31d2394e0db69541b1591d46c5ad6431c81db3 affected
ca3bf5d47cec8b7614bcb2e9132c40081d6d81db< abe5d7962f09adada9c4fb25b816dddd3f97c55d affected
ca3bf5d47cec8b7614bcb2e9132c40081d6d81db< e5ebe8544df1a1c3611739a8622156094fe470df affected
ca3bf5d47cec8b7614bcb2e9132c40081d6d81db< 030a8e84f8f1b6e96f469c84a13a225c3699910b affected
ca3bf5d47cec8b7614bcb2e9132c40081d6d81db< fb80117fddb5b477218dc99bb53911b72c3847f8 affected
… +10 more rows
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I. Basic Information for CVE-2026-68325

Vulnerability Information
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Vulnerability Title
iommu/amd: Bound the early ACPI HID map
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Bound the early ACPI HID map The ivrs_acpihid command-line parser appends entries to a fixed four-element early_acpihid_map array. Unlike the sibling IOAPIC and HPET parsers, it does not reject a fifth entry before incrementing the map size. Check the capacity at the common found label before parsing the HID and UID or writing the entry.
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基金会开源的一个操作系统内核。 Linux kernel 4.7版本存在安全漏洞，该漏洞源于ivrs_acpihid命令行解析器在向固定大小的early_acpihid_map数组添加条目时未检查容量便递增映射大小，可能导致数组越界写入。
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 ca3bf5d47cec8b7614bcb2e9132c40081d6d81db ~ 9ae6b1b972ce01d3316c8a5f7f58c8b3668cc6bb -
Linux Linux 4.7 -

II. Public POCs for CVE-2026-68325

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III. Intelligence Information for CVE-2026-68325

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Patches & Fixes for CVE-2026-68325 (8)

Same Patch Batch · Linux · 2026-08-10 · 344 CVEs total

CVE-2026-68161 9.8 CRITICAL sctp: close UDP tunnel sockets during netns teardown
CVE-2026-68123 9.8 CRITICAL openvswitch: fix GSO userspace truncation underflow
CVE-2026-68127 9.8 CRITICAL ila: reload IPv6 header after pskb_may_pull in checksum adjust
CVE-2026-68117 9.8 CRITICAL tipc: clear sock->sk on the failed-insert path in tipc_sk_create()
CVE-2026-68136 9.8 CRITICAL net: gro: fix double aggregation of flush-marked skbs
CVE-2026-68137 9.8 CRITICAL net/x25: fix use-after-free in x25_kill_by_neigh()
CVE-2026-68300 9.8 CRITICAL sctp: auth: verify auth requirement when auth_chunk is NULL
CVE-2026-68144 9.8 CRITICAL phonet: pep: fix use-after-free in pep_get_sb()
CVE-2026-68154 9.8 CRITICAL libceph: reject zero bucket types in crush_decode
CVE-2026-68156 9.8 CRITICAL libceph: refresh auth->authorizer_buf{,_len} after authorizer update
CVE-2026-68158 9.8 CRITICAL libceph: Fix multiplication overflow in decode_new_up_state_weight()
CVE-2026-68159 9.8 CRITICAL libceph: bound pg_{temp,upmap,upmap_items} length to CEPH_PG_MAX_SIZE
CVE-2026-68160 9.8 CRITICAL ceph: fix pre-auth out-of-bounds read on snaptrace in ceph_handle_caps()
CVE-2026-68170 9.8 CRITICAL mptcp: fix stale skb->sk reference on subflow close
CVE-2026-68302 9.8 CRITICAL amt: re-read skb header pointers after every pull
CVE-2026-68426 9.8 CRITICAL xfrm: fix stale skb->prev after async crypto steals a GSO segment
CVE-2026-68381 9.8 CRITICAL ksmbd: pin conn during async oplock break notification
CVE-2026-68388 9.8 CRITICAL smb/client: handle overlapping allocated ranges in fallocate
CVE-2026-68385 9.8 CRITICAL s390/checksum: Fix csum_partial() without vector facility
CVE-2026-68124 9.6 CRITICAL mctp: serial: handle zero-length frames to prevent rx buffer overflow

Showing top 20 of 344 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-68325

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