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CVE-2026-98944— HID: steam: Refactor registration

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：重构注册流程 此次修改对注册/注销流程进行了重构和简化。由于现在仅在客户端未处于打开状态时才执行注册操作，因此可以移除处理该情况的逻辑，并精简其余函数代码。 同时，我们移除了此前“必须存在序列号以表明已注册”的假设，改用单一用途的布尔标志来替代。 在之前的一次重构中，若后续注册步骤失败，负责注销电池的代码被意外遗漏。这导致在 Steam 设备对象被销毁后，仍可能残留一个 power_supply 对象。此问题也已在本次修复中解决。

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 3c2f97343d4df2a75747f4c79effa0587509888f affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 2b15e10aff95c78dbacc4fa32fa90c9098213e03 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< cf71a6ee1d4e36b8e65b81c064e2797a10247280 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< c06cf54fe99b8c6bcf2017bb076c0e3918608cea affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 6f9b740c31ba7e061b2ebb330d9a3d63f1358f29 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-2026-98944

Vulnerability Information
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Vulnerability Title
HID: steam: Refactor registration
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: HID: steam: Refactor registration This refactors and simplifies the registration/unregistration flow. Since we now only perform registration when the client isn't opened anymore, the logic for handling that can be removed, and the rest of the function streamlined. We also remove the previous assumption that we have a serial number to show we're registered, replacing it with a single purpose boolean. In a previous refactor the code for unregistering a battery if later registration steps failed was accidentally left out. As a result, a lingering power_supply object could get left over after the steam object was torn down. This is also fixed here.
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 ~ 3c2f97343d4df2a75747f4c79effa0587509888f -
Linux Linux 6.6.160 ~ 6.6.* -

II. Public POCs for CVE-2026-98944

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III. Intelligence Information for CVE-2026-98944

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Patches & Fixes for CVE-2026-98944 (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-2026-98945 HID: steam: Rearrange teardown sequence
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

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