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CVE-2024-39292— um: Add winch to winch_handlers before registering winch 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，该漏洞源于注册winch IRQ是具有竞争性的，从而导致若在winch添加到winch_handlers列表之前注册便会发生中断。

CVSS 7.8 · High EPSS 0.25% · P15

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 42a359e31a0e438b5b978a8f0fecdbd3c86bb033< 66ea9a7c6824821476914bed21a476cd20094f33 affected
42a359e31a0e438b5b978a8f0fecdbd3c86bb033< dc1ff95602ee908fcd7d8acee7a0dadb61b1a0c0 affected
42a359e31a0e438b5b978a8f0fecdbd3c86bb033< 351d1a64544944b44732f6a64ed65573b00b9e14 affected
42a359e31a0e438b5b978a8f0fecdbd3c86bb033< 31960d991e43c8d6dc07245f19fc13398e90ead2 affected
42a359e31a0e438b5b978a8f0fecdbd3c86bb033< 0c02d425a2fbe52643a5859a779db0329e7dddd4 affected
42a359e31a0e438b5b978a8f0fecdbd3c86bb033< 434a06c38ee1217a8baa0dd7c37cc85d50138fb0 affected
42a359e31a0e438b5b978a8f0fecdbd3c86bb033< 73b8e21f76c7dda4905655d2e2c17dc5a73b87f1 affected
42a359e31a0e438b5b978a8f0fecdbd3c86bb033< a0fbbd36c156b9f7b2276871d499c9943dfe5101 affected
… +10 more rows
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I. Basic Information for CVE-2024-39292

Vulnerability Information
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Vulnerability Title
um: Add winch to winch_handlers before registering winch IRQ
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: um: Add winch to winch_handlers before registering winch IRQ Registering a winch IRQ is racy, an interrupt may occur before the winch is added to the winch_handlers list. If that happens, register_winch_irq() adds to that list a winch that is scheduled to be (or has already been) freed, causing a panic later in winch_cleanup(). Avoid the race by adding the winch to the winch_handlers list before registering the IRQ, and rolling back if um_request_irq() fails.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/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，该漏洞源于注册winch IRQ是具有竞争性的，从而导致若在winch添加到winch_handlers列表之前注册便会发生中断。
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 42a359e31a0e438b5b978a8f0fecdbd3c86bb033 ~ 66ea9a7c6824821476914bed21a476cd20094f33 -
Linux Linux 2.6.23 -

II. Public POCs for CVE-2024-39292

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III. Intelligence Information for CVE-2024-39292

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Mailing List Discussions for CVE-2024-39292 (1)

Other References for CVE-2024-39292 (8)

Same Patch Batch · Linux · 2024-06-24 · 14 CVEs total

CVE-2024-38384 7.8 HIGH blk-cgroup: fix list corruption from reorder of WRITE ->lqueued
CVE-2024-38663 7.8 HIGH blk-cgroup: fix list corruption from resetting io stat
CVE-2024-32936 7.8 HIGH media: ti: j721e-csi2rx: Fix races while restarting DMA
CVE-2024-34027 7.8 HIGH f2fs: compress: fix to cover {reserve,release}_compress_blocks() w/ cp_rwsem lock
CVE-2024-33847 7.1 HIGH f2fs: compress: don't allow unaligned truncation on released compress inode
CVE-2024-38664 drm: zynqmp_dpsub: Always register bridge
CVE-2024-38667 riscv: prevent pt_regs corruption for secondary idle threads
CVE-2024-39291 drm/amdgpu: Fix buffer size in gfx_v9_4_3_init_ cp_compute_microcode() and rlc_microcode()
CVE-2024-34030 PCI: of_property: Return error for int_map allocation failure
CVE-2024-35247 fpga: region: add owner module and take its refcount
CVE-2024-36479 fpga: bridge: add owner module and take its refcount
CVE-2024-37021 fpga: manager: add owner module and take its refcount
CVE-2024-37026 drm/xe: Only use reserved BCS instances for usm migrate exec queue

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-39292

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