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CVE-2026-89627— HID: roccat: free buffered reports when destroying device

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存在安全漏洞，该漏洞源于驱动销毁设备时未释放缓冲区中缓存的报告，可能导致内存泄漏。

AI Predicted 5.5 Difficulty: Hard EPSS 0.21% · P11

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378< cebb20b9a29cfc90bf56e54337333084f85a69dd affected
206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378< 690da9177e64bcfda2f4c0b5b8465178e4a236d8 affected
206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378< b3cc411daa50b39ba5706492a80a5a0804d9c85f affected
206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378< 4cb3ff31d237ad1f515455c497ef07d7172d912b affected
206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378< 943b8dc2c6044c01e36395f51bb809a4b6bdfd22 affected
206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378< da00eac19feef209c9591e48c860afc2014603be affected
206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378< fbb5a60f5c31b5625f0d89a79912fbcb2559289b affected
206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378< bbff0ccbff360a5498075525005f6a913239a3d7 affected
… +10 more rows
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I. Basic Information for CVE-2026-89627

Vulnerability Information
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Vulnerability Title
HID: roccat: free buffered reports when destroying device
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: HID: roccat: free buffered reports when destroying device roccat_report_event() duplicates each report with kmemdup() and stores the allocation in a circular-buffer slot. The allocation is released only when that slot is reused. The device destruction paths free struct roccat_device without releasing reports still stored in cbuf[]. This makes those allocations unreachable and leaks up to ROCCAT_CBUF_SIZE report buffers per device. Add a small destructor that frees every buffered report before freeing the device, and use it in both paths that can destroy a registered device.
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存在安全漏洞，该漏洞源于驱动销毁设备时未释放缓冲区中缓存的报告，可能导致内存泄漏。
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 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378 ~ cebb20b9a29cfc90bf56e54337333084f85a69dd -
Linux Linux 2.6.35 -

II. Public POCs for CVE-2026-89627

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III. Intelligence Information for CVE-2026-89627

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Patches & Fixes for CVE-2026-89627 (8)

Same Patch Batch · Linux · 2026-09-11 · 431 CVEs total

CVE-2026-89688 9.8 CRITICAL nfsd: drop the stateid, not the stateowner, on seqid_op replay retry
CVE-2026-89656 9.8 CRITICAL libceph: reject buckets with mismatched CRUSH ids
CVE-2026-89655 9.8 CRITICAL ceph: fix UAF in __kick_flushing_caps() on cf entry freed during unlock
CVE-2026-89658 9.8 CRITICAL NFSD: Prevent client use-after-free during NFSv4.0 revoked-state cleanup
CVE-2026-89660 9.8 CRITICAL NFSD: Prevent client use-after-free during admin state revocation
CVE-2026-89659 9.8 CRITICAL NFSD: Prevent client use-after-free during delegation revoke
CVE-2026-89662 9.8 CRITICAL NFSD: Prevent lock owner use-after-free during client teardown
CVE-2026-89669 9.8 CRITICAL nfsd: initialize copy-notify stateid before publishing it
CVE-2026-89674 9.8 CRITICAL nfsd: fix XDR length calculation in nfsd4_ff_encode_layoutget
CVE-2026-89675 9.8 CRITICAL nfsd: fix UAF in async copy cancel and shutdown
CVE-2026-89676 9.8 CRITICAL nfsd: fix stale s2s_cp_stateids IDR entry for async COPY
CVE-2026-89677 9.8 CRITICAL nfsd: fix possible fh_compose of wrong dentry in nfsd4_create_file()
CVE-2026-89681 9.8 CRITICAL nfsd: fix layout fence worker double-reference race
CVE-2026-89686 9.8 CRITICAL nfsd: fix BUG_ON in nfsd4_alloc_layout_stateid on racing delegation revoke
CVE-2026-89703 9.8 CRITICAL nfsd: set SC_STATUS_FREED in nfsd4_drop_revoked_stid for delegations
CVE-2026-89479 9.8 CRITICAL sctp: stop processing a packet once its association is deleted
CVE-2026-89478 9.8 CRITICAL sctp: drop a chunk if its transport was removed
CVE-2026-89702 9.8 CRITICAL nfsd: size fh_verify server sockaddr slot by xpt_locallen
CVE-2026-89482 9.8 CRITICAL nvme-tcp: do not accept C2HData based on blk_rq_payload_bytes() alone
CVE-2026-89708 9.8 CRITICAL nfsd: RCU-protect cl_cb_session to fix use-after-free on session teardown

Showing top 20 of 431 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-89627

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