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CVE-2026-98945— HID: steam: Rearrange teardown sequence

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： HID: steam：调整清理顺序 该修复解决了在清理过程中存在的一个短暂时间窗口问题：在此期间，回调函数仍可能被调度执行，而这些回调会持有指向已被释放的 结构体的悬空指针。 此外，该修复还将震动（rumble）和模式切换（mode switch）相关的工作取消操作移入 函数中，因为这些操作不应在客户端的 设备仍处于打开状态时继续存在。

AI Predicted 7.8 Difficulty: Hard

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< d2587923d50c8b141ce0ccb284c714cf6054d6a7 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 81a8209c09f9be7eef860ca6cc154749a6b4d243 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 86724f4bcf6049c3a322f7a7b1f968210059c46a affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< b5ea938ff776306798d3a11485c2475034f92131 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< ddce9641ce924ed91ec8304577e463823a29ffaf affected
< 6.6.160 affected
< 6.12.113 affected
< 6.18.57 affected
… +6 more rows
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I. Basic Information for CVE-2026-98945

Vulnerability Information
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Vulnerability Title
HID: steam: Rearrange teardown sequence
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: HID: steam: Rearrange teardown sequence This fixes a narrow window during the teardown sequence where callbacks could still be scheduled during cleanup that would then have a dangling pointer to the now-freed steam struct. This also puts work canceling for rumble and mode switch in steam_unregister, as that shouldn't persist while the client hdev is open.
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 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ~ d2587923d50c8b141ce0ccb284c714cf6054d6a7 -
Linux Linux 6.6.160 ~ 6.6.* -

II. Public POCs for CVE-2026-98945

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III. Intelligence Information for CVE-2026-98945

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Patches & Fixes for CVE-2026-98945 (5)

Same Patch Batch · Linux · 2026-10-23 · 218 CVEs total

CVE-2026-98937 perf/core: Check kernel access when kernel callchains are requested
CVE-2026-98951 riscv: ptrace: Zero-initialize regset buffers before copyin
CVE-2026-98950 flow_dissector: avoid u16 truncation of hlen in bpf_flow_dissect()
CVE-2026-98949 drm/imagination: Fix reference and vm_bo handling in remap()
CVE-2026-98948 mlxsw: spectrum_flower: Fix port range register leak in tmplt_create()
CVE-2026-98947 vsock: Fix memory leak in vmci_transport_recv_dgram_cb()
CVE-2026-98946 drm/vc4: Disable the V3D interrupt across runtime suspend
CVE-2026-98944 HID: steam: Refactor registration
CVE-2026-98943 HID: steam: Clean up locking
CVE-2026-98942 sched_ext: Build the cid tables privately and publish them with RCU
CVE-2026-98941 ext4: don't enable large folios on encrypted inodes
CVE-2026-98940 ASoC: qcom: lpass-cpu: use DAI table index for playback constraints
CVE-2026-98939 x86/mm: Drop unnecessary PMD page copy when freeing
CVE-2026-98938 rust: irq: pass RegistrationInner as cookie to request_irq
CVE-2026-98926 drm/amd/display: Remove sink usage from DPMS
CVE-2026-98929 macsec: initialize SecY before registering the netdevice
CVE-2026-98928 KVM: arm64: Derive GUEST_HAS_SVE from the SVE feature bit at EL2
CVE-2026-98927 KVM: arm64: nv: Fix life cycle of the nested_mmus array
CVE-2026-98930 KVM: s390: Fix IRQ injection with SIGP Stop and Store Status
CVE-2026-98925 bpf, sockmap: Fix self-redirect copied_seq double-counting

Showing top 20 of 218 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-98945

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