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CVE-2026-93815— net: au1000: move free_irq out of the close-time spinlocked section

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，已解决以下漏洞： 网络子系统：au1000 驱动程序：将 free_irq() 移出关闭阶段的自旋锁保护区域 函数在持有 （通过 加锁）的同时调用了 。由于 内部需要获取 IRQ 描述符的请求互斥锁（ ），因此它可能引发睡眠操作，故不应处于关闭阶段的自旋锁保护区域内。 该问题由我们的静态分析工具发现，并通过对内核源码中 的 路径进行人工审查予以确认。审查发现，该路径在执行 MAC 复位、停止队列以及调用 期间，一直持有 锁。 进一步的运行时定向验证表明，在驱动锁保护下保持 接口中的载波状态以

AI Predicted 5.5 Difficulty: Moderate EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1610 · Deploy Container

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< f86bca5b7857b85bfa8afdb4fa895d7c0a3f7ebc affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 26fd652915123a690f19d62b253b545a53f3cd51 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< d514b08ed61fdffe23604fd3e9e53c07cbe5ac3e affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< e1b5a13249975fec3cf654efa84f57118db2da2c affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 4536667fba8ddbaff2f2a135080ae6aabf737b5e affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< fc2233f1ab2a1ca562869bca6987d7477671388c affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< f48763beab4eea41fc480c9702ec6eebe8d75e4f affected
2.6.12 affected
… +8 more rows
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I. Basic Information for CVE-2026-93815

Vulnerability Information
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Vulnerability Title
net: au1000: move free_irq out of the close-time spinlocked section
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: au1000: move free_irq out of the close-time spinlocked section au1000_close() calls free_irq() while aup->lock is still held with spin_lock_irqsave(). free_irq() can sleep because it takes the IRQ descriptor request mutex, so it does not belong inside the close-time spinlocked section. This was found by our static analysis tool and then confirmed by manual review of the in-tree au1000_close() .ndo_stop path. The reviewed path keeps aup->lock held across the MAC reset, queue stop and free_irq(dev->irq, dev). A directed runtime validation kept that ndo_stop carrier and the same free_irq(dev->irq, dev) operation under the driver lock. Lockdep reported "BUG: sleeping function called from invalid context" and "Invalid wait context" while free_irq() was taking desc->request_mutex, with au1000_close() and free_irq() on the stack. Drop aup->lock before freeing the IRQ. The protected close-time work still stops the device and queue before IRQ teardown, but the sleepable IRQ core path now runs outside the spinlocked section.
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ~ f86bca5b7857b85bfa8afdb4fa895d7c0a3f7ebc -
Linux Linux 2.6.12 -

II. Public POCs for CVE-2026-93815

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III. Intelligence Information for CVE-2026-93815

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Patches & Fixes for CVE-2026-93815 (7)

Same Patch Batch · Linux · 2026-09-24 · 234 CVEs total

CVE-2026-93207 9.8 CRITICAL SUNRPC: Zero rpc_gss_wire_cred at svcauth_gss_decode_credbody() entry
CVE-2026-97413 9.8 CRITICAL RDMA/rtrs-srv: Fix integer underflow in process_read and process_write
CVE-2026-93228 9.1 CRITICAL svcrdma: Reject Write/Reply chunks with segcount 0
CVE-2026-93799 8.8 HIGH wifi: iwlwifi: mvm: validate sta_id in BA window status notif
CVE-2026-97442 8.8 HIGH wifi: ath11k: fix invalid data access in ath11k_dp_rx_h_undecap_nwifi
CVE-2026-97409 8.8 HIGH nvme-fc: Do not cancel requests in io target before it is initialized
CVE-2026-93806 8.8 HIGH wifi: cfg80211: validate assoc response length before status and IE access
CVE-2026-93793 8.8 HIGH wifi: iwlwifi: mvm: validate TX_CMD response layout
CVE-2026-93790 8.8 HIGH wifi: iwlwifi: mvm: fix out-of-bounds tid_data access in BA notif
CVE-2026-93284 8.8 HIGH drm/pagemap: dma-unmap pages before handling migration errors
CVE-2026-93280 8.8 HIGH greybus: audio: bound the topology section sizes against the fetched size
CVE-2026-97509 8.8 HIGH thunderbolt: Keep XDomain reference during the lifetime of a service
CVE-2026-93827 8.4 HIGH virtio-fs: avoid double-free on failed queue setup
CVE-2026-97450 8.4 HIGH ACPICA: validate handler object type in two places
CVE-2026-97452 8.4 HIGH ACPICA: Prevent adding invalid references
CVE-2026-97451 8.4 HIGH ACPICA: Fix integer overflow in acpi_ex_opcode_3A_1T_1R() (mid_op)
CVE-2026-97455 8.4 HIGH ACPICA: Fix use-after-free in acpi_ds_terminate_control_method()
CVE-2026-97433 8.2 HIGH nvme: validate FDP configuration descriptor sizes
CVE-2026-93787 8.1 HIGH smb: client: bound dirent name against end of SMB response in cifs_filldir
CVE-2026-93786 8.1 HIGH ksmbd: preserve VFS inherited POSIX ACL mask

Showing top 20 of 234 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-93815

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