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CVE-2025-68205— ALSA: hda/hdmi: Fix breakage at probing nvhdmi-mcp driver

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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于回调函数配置错误，可能导致空指针取消引用。

AI Predicted 3.3 Difficulty: Theoretical EPSS 0.18% · P8

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 6

VendorProduct Version RangeStatus
Linux Linux ad781b550f9a8829e3dae4bd3d18c4a126a53d04< d2aed6fac1148528181affb781aa683d6569042b affected
ad781b550f9a8829e3dae4bd3d18c4a126a53d04< 82420bd4e17bdaba8453fbf9e10c58c9ed0c9727 affected
6.17 affected
< 6.17 unaffected
6.17.9≤ 6.17.* unaffected
6.18≤ * unaffected
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I. Basic Information for CVE-2025-68205

Vulnerability Information
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Vulnerability Title
ALSA: hda/hdmi: Fix breakage at probing nvhdmi-mcp driver
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: hda/hdmi: Fix breakage at probing nvhdmi-mcp driver After restructuring and splitting the HDMI codec driver code, each HDMI codec driver contains the own build_controls and build_pcms ops. A copy-n-paste error put the wrong entries for nvhdmi-mcp driver; both build_controls and build_pcms are swapped. Unfortunately both callbacks have the very same form, and the compiler didn't complain it, either. This resulted in a NULL dereference because the PCM instance hasn't been initialized at calling the build_controls callback. Fix it by passing the proper entries.
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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于回调函数配置错误，可能导致空指针取消引用。
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 ad781b550f9a8829e3dae4bd3d18c4a126a53d04 ~ d2aed6fac1148528181affb781aa683d6569042b -
Linux Linux 6.17 -

II. Public POCs for CVE-2025-68205

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III. Intelligence Information for CVE-2025-68205

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Other References for CVE-2025-68205 (2)

Same Patch Batch · Linux · 2025-12-16 · 156 CVEs total

CVE-2025-68284 9.8 CRITICAL libceph: prevent potential out-of-bounds writes in handle_auth_session_key()
CVE-2025-40350 9.8 CRITICAL net/mlx5e: RX, Fix generating skb from non-linear xdp_buff for striding RQ
CVE-2025-68263 9.8 CRITICAL ksmbd: ipc: fix use-after-free in ipc_msg_send_request
CVE-2025-68301 9.8 CRITICAL net: atlantic: fix fragment overflow handling in RX path
CVE-2025-68192 9.8 CRITICAL net: usb: qmi_wwan: initialize MAC header offset in qmimux_rx_fixup
CVE-2025-68285 9.8 CRITICAL libceph: fix potential use-after-free in have_mon_and_osd_map()
CVE-2025-68315 9.8 CRITICAL f2fs: fix to detect potential corrupted nid in free_nid_list
CVE-2025-68226 8.8 HIGH smb: client: fix incomplete backport in cfids_invalidation_worker()
CVE-2025-68255 8.8 HIGH staging: rtl8723bs: fix stack buffer overflow in OnAssocReq IE parsing
CVE-2025-68256 8.8 HIGH staging: rtl8723bs: fix out-of-bounds read in rtw_get_ie() parser
CVE-2025-68304 8.8 HIGH Bluetooth: hci_core: lookup hci_conn on RX path on protocol side
CVE-2025-68314 8.8 HIGH drm/msm: make sure last_fence is always updated
CVE-2025-40362 8.8 HIGH ceph: fix multifs mds auth caps issue
CVE-2025-68250 8.2 HIGH hung_task: fix warnings caused by unaligned lock pointers
CVE-2025-68183 7.8 HIGH ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr
CVE-2025-68212 7.8 HIGH fs: Fix uninitialized 'offp' in statmount_string()
CVE-2025-68208 7.8 HIGH bpf: account for current allocated stack depth in widen_imprecise_scalars()
CVE-2025-68207 7.8 HIGH drm/xe/guc: Synchronize Dead CT worker with unbind
CVE-2025-68303 7.8 HIGH platform/x86: intel: punit_ipc: fix memory corruption
CVE-2025-68181 7.8 HIGH drm/radeon: Remove calls to drm_put_dev()

Showing top 20 of 156 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-68205

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