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CVE-2026-89599— fbdev: omapfb: panel-dsi-cm: initialize lock before registering display

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，已修复以下漏洞： fbdev: omapfb: panel-dsi-cm: 在注册显示之前初始化锁 在初始化 之前注册了显示设备。 一旦 公开了该显示设备，其他使用者就可能调用 的回调函数，而该回调会尝试获取这个尚未初始化的互斥锁（mutex）。 修复方式：在注册显示设备之前初始化互斥锁，以确保已公开的回调函数始终能访问到一个有效的锁。

CVSS 8.4 · High EPSS 0.14% · P4

Possible ATT&CK Techniques 1 AI

T1547 · Boot or Logon Autostart Execution

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux f76ee892a99e68b55402b8d4b8aeffcae2aff34d< 2c3f8c9c995db185284b079f39177e85b2258176 affected
f76ee892a99e68b55402b8d4b8aeffcae2aff34d< 76818e81cfcae33b09b739de09162c7d8d89bf0b affected
f76ee892a99e68b55402b8d4b8aeffcae2aff34d< 09db79078f25c048cfb5d7849795c70415ab8574 affected
f76ee892a99e68b55402b8d4b8aeffcae2aff34d< f8e43fe0f22b7137ce456e6fe3581d3098174f74 affected
4.5 affected
< 4.5 unaffected
6.12.109≤ 6.12.* unaffected
6.18.50≤ 6.18.* unaffected
… +2 more rows
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I. Basic Information for CVE-2026-89599

Vulnerability Information
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Vulnerability Title
fbdev: omapfb: panel-dsi-cm: initialize lock before registering display
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: fbdev: omapfb: panel-dsi-cm: initialize lock before registering display dsicm_probe() registers the display before initializing ddata->lock. Once omapdss_register_display() publishes the display, another consumer can reach a dsicm callback that takes this mutex while it is still uninitialized. Initialize the mutex before registering the display so the published callbacks always see a valid lock.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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 f76ee892a99e68b55402b8d4b8aeffcae2aff34d ~ 2c3f8c9c995db185284b079f39177e85b2258176 -
Linux Linux 4.5 -

II. Public POCs for CVE-2026-89599

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III. Intelligence Information for CVE-2026-89599

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Patches & Fixes for CVE-2026-89599 (4)

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-2026-89599

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