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CVE-2026-80967— ALSA: pcxhr: initialize mutexes before requesting threaded IRQ

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ALSA pcxhr驱动在初始化mgr->lock互斥锁之前请求pcxhr_threaded_irq，可能导致早期中断在探测期间访问未初始化的互斥锁状态。

CVSS 8.4 · High EPSS 0.18% · P8

Possible ATT&CK Techniques 1 AI

T1548.003 · Sudo and Sudo Caching

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 9bef72bdb26e291d6dffb04768741a0e49582666< 039602d6ddb1febbb0561b30dab04461f78a1319 affected
9bef72bdb26e291d6dffb04768741a0e49582666< a5f405adb0229c9cf64eb3d695c333c92e3d3d4f affected
9bef72bdb26e291d6dffb04768741a0e49582666< ede25b7fea0d7487ee8528bf35dc7b9a1cbcd814 affected
9bef72bdb26e291d6dffb04768741a0e49582666< c069b3cfd753d6688ea0271c43553631ab38ce10 affected
9bef72bdb26e291d6dffb04768741a0e49582666< 7ef9ad82d95dd3c74570d80a689a0570fbc7539e affected
9bef72bdb26e291d6dffb04768741a0e49582666< 7cf280fbef5db6310e1b32074c8c34d1ba459796 affected
9bef72bdb26e291d6dffb04768741a0e49582666< 6c97817e20598e5473094e0e38d1f51f1cf4dfff affected
3.18 affected
… +8 more rows
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I. Basic Information for CVE-2026-80967

Vulnerability Information
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Vulnerability Title
ALSA: pcxhr: initialize mutexes before requesting threaded IRQ
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: pcxhr: initialize mutexes before requesting threaded IRQ pcxhr_probe() requests pcxhr_threaded_irq() before initializing mgr->lock, even though the threaded handler takes that mutex. Initialize the manager locks before request_threaded_irq() so an early interrupt cannot run against uninitialized mutex state during probe.
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
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ALSA pcxhr驱动在初始化mgr->lock互斥锁之前请求pcxhr_threaded_irq，可能导致早期中断在探测期间访问未初始化的互斥锁状态。
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 9bef72bdb26e291d6dffb04768741a0e49582666 ~ 039602d6ddb1febbb0561b30dab04461f78a1319 -
Linux Linux 3.18 -

II. Public POCs for CVE-2026-80967

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III. Intelligence Information for CVE-2026-80967

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Patches & Fixes for CVE-2026-80967 (6)

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-2026-89478 9.8 CRITICAL sctp: drop a chunk if its transport was removed
CVE-2026-89479 9.8 CRITICAL sctp: stop processing a packet once its association is deleted
CVE-2026-89702 9.8 CRITICAL nfsd: size fh_verify server sockaddr slot by xpt_locallen
CVE-2026-89703 9.8 CRITICAL nfsd: set SC_STATUS_FREED in nfsd4_drop_revoked_stid for delegations
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-2026-80967

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