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CVE-2026-98003— iommu/amd: Do not reallocate GA log buffers on resume

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.

在 Linux 内核中，以下漏洞已得到修复： iommu/amd: 在系统恢复（resume）期间不要重新分配 GA 日志缓冲区 提交 c5e1a1eb9279（“iommu/amd: 简化和整合虚拟 APIC (AVIC) 启用功能”）将 GA 日志分配逻辑从 移到了 中，而该函数在每次系统恢复时都会被调用。 函数无条件地赋值 和 。因此，每次系统恢复时都会覆盖启动时设置的指针，导致旧的分配未被释放，从而产生内存泄漏。此外，该函数在系统核心恢复回调（syscore resume callback）中使用 标志进行

AI Predicted 5.5 Difficulty: Moderate EPSS 0.17% · P5

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b< 94458b80d3b203c1c9e2c98aa7319b7713e006c0 affected
c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b< b6be275d19cee01f8f1f08a2ff18337103d05d40 affected
c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b< 00a7dd64888d6dd72110b40e2824a088cf7b7386 affected
6.0 affected
< 6.0 unaffected
6.18.53≤ 6.18.* unaffected
7.2.7≤ 7.2.* unaffected
7.3-rc3≤ * unaffected
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I. Basic Information for CVE-2026-98003

Vulnerability Information
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Vulnerability Title
iommu/amd: Do not reallocate GA log buffers on resume
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Do not reallocate GA log buffers on resume Commit c5e1a1eb9279 ("iommu/amd: Simplify and Consolidate Virtual APIC (AVIC) Enablement") moved the GA log allocation from iommu_init_pci() to enable_iommus_vapic(), which is called on every resume. iommu_init_ga_log() assigns iommu->ga_log and iommu->ga_log_tail unconditionally. Each resume therefore replaces the boot-time pointers and leaks both old allocations. The function also uses GFP_KERNEL from a syscore resume callback, where interrupts are disabled and the non-boot CPUs are offline. Return early if both buffers are already allocated. Clear the pointers in free_ga_log() so a partial allocation failure cannot leave ga_log dangling.
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b ~ 94458b80d3b203c1c9e2c98aa7319b7713e006c0 -
Linux Linux 6.0 -

II. Public POCs for CVE-2026-98003

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III. Intelligence Information for CVE-2026-98003

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Patches & Fixes for CVE-2026-98003 (3)

Same Patch Batch · Linux · 2026-09-25 · 372 CVEs total

CVE-2026-100075 9.8 CRITICAL RDMA/srpt: Fix srpt_alloc_rw_ctxs() unwind counters
CVE-2026-97555 8.8 HIGH smb: client: fix heap overflow in DACL owner/group rewrite
CVE-2026-97957 8.8 HIGH net: hinic: fix mailbox segment buffer overflow
CVE-2026-97527 8.8 HIGH scsi: qla2xxx: Serialize NVMe unsol ctx list with a per-fcport lock
CVE-2026-97528 8.8 HIGH scsi: qla2xxx: Unlink NVMe unsol ctx before freeing on LS reject error
CVE-2026-98115 8.8 HIGH ksmbd: safely drain sessions during logoff
CVE-2026-97525 8.2 HIGH x86/mm/pat: Allocate split page tables as kernel page tables
CVE-2026-98069 8.1 HIGH net/rds: acquire the fastpath locks in rds_conn_shutdown()
CVE-2026-97573 8.1 HIGH bnxt_en: Handle buffer allocation failure in bnxt_rx_ring_reset()
CVE-2026-97570 8.1 HIGH bnxt_en: Bound SW TPA IDs to prevent crashes
CVE-2026-98130 8.1 HIGH sctp: fix a TOCTOU race in SCTP_CMD_TIMER_START
CVE-2026-98070 8.1 HIGH net/rds: acquire RDS_IN_XMIT in rds_tcp_reset_callbacks()
CVE-2026-98002 7.8 HIGH iommu/amd: Fix ineffective error check in nested domain allocation
CVE-2026-97575 7.8 HIGH media: v4l2-ctrls: validate AV1 tile counts
CVE-2026-97576 7.8 HIGH media: v4l2-ctrls: validate HEVC tile counts
CVE-2026-97941 7.8 HIGH mm/slab: take n->list_lock in __slab_try_return_freelist() to avoid race
CVE-2026-98112 7.8 HIGH ksmbd: fix listener task lifetime on netdev events
CVE-2026-97937 7.8 HIGH ftrace: fork: Initialize function graph state before copy_exec_state()
CVE-2026-97580 7.8 HIGH media: rkvdec: bound HEVC tile loops and PPS id to the array capacity
CVE-2026-97940 7.8 HIGH ipv6: fix fib6 walker UAF on seq stop

Showing top 20 of 372 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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