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CVE-2026-89444— platform/x86: dell-wmi-sysman: Don't hex dump attribute security buffer

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 5.11版本存在安全漏洞，该漏洞源于dell-wmi-sysman的set_attribute()通过populate_security_buffer()将当前管理员密码填充到BIOS属性请求缓冲区的安全区域后，使用print_hex_dump_bytes()转储整个请求缓冲区，可能导致内核日志中暴露明文管理员密码。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.21% · P11

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux e8a60aa7404bfef37705da5607c97737073ac38d< 23ba9a18896e198f837ae54be99c8852c41890f7 affected
e8a60aa7404bfef37705da5607c97737073ac38d< 26f554f9f0fb603f76291c10b1cf979241bd2273 affected
e8a60aa7404bfef37705da5607c97737073ac38d< 44ec7f1113309a93d0f250bcd49285d21dd1470e affected
e8a60aa7404bfef37705da5607c97737073ac38d< ceeee18c927958b74a04b92cf084fc496fa21e8b affected
e8a60aa7404bfef37705da5607c97737073ac38d< 22222f92b0a5116eb4aac4be81e7b770adfa32ee affected
e8a60aa7404bfef37705da5607c97737073ac38d< eb73b9d51490bec4f73ac6efdba5ac535fcfee74 affected
e8a60aa7404bfef37705da5607c97737073ac38d< 83c80495e45eddf64c6525fb582d8db68f256b71 affected
5.11 affected
… +8 more rows
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I. Basic Information for CVE-2026-89444

Vulnerability Information
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Vulnerability Title
platform/x86: dell-wmi-sysman: Don't hex dump attribute security buffer
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: platform/x86: dell-wmi-sysman: Don't hex dump attribute security buffer set_attribute() populates the security area of the BIOS attribute request buffer with the current admin password via populate_security_buffer(), then dumps the whole request buffer with print_hex_dump_bytes(). This can expose the plaintext admin password in the kernel log. The same issue was fixed for the password attribute path by commit d1a196e0a6dc ("platform/x86: dell-wmi-sysman: Don't hex dump plaintext password data"). Remove the remaining dump from the BIOS attribute path.
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 5.11版本存在安全漏洞，该漏洞源于dell-wmi-sysman的set_attribute()通过populate_security_buffer()将当前管理员密码填充到BIOS属性请求缓冲区的安全区域后，使用print_hex_dump_bytes()转储整个请求缓冲区，可能导致内核日志中暴露明文管理员密码。
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 e8a60aa7404bfef37705da5607c97737073ac38d ~ 23ba9a18896e198f837ae54be99c8852c41890f7 -
Linux Linux 5.11 -

II. Public POCs for CVE-2026-89444

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III. Intelligence Information for CVE-2026-89444

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Patches & Fixes for CVE-2026-89444 (7)

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-2026-89444

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