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CVE-2024-46791— can: mcp251x: fix deadlock if an interrupt occurs during mcp251x_open

EPSS 0.01% · P2
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I. Basic Information for CVE-2024-46791

Vulnerability Information
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Vulnerability Title
can: mcp251x: fix deadlock if an interrupt occurs during mcp251x_open
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: can: mcp251x: fix deadlock if an interrupt occurs during mcp251x_open The mcp251x_hw_wake() function is called with the mpc_lock mutex held and disables the interrupt handler so that no interrupts can be processed while waking the device. If an interrupt has already occurred then waiting for the interrupt handler to complete will deadlock because it will be trying to acquire the same mutex. CPU0 CPU1 ---- ---- mcp251x_open() mutex_lock(&priv->mcp_lock) request_threaded_irq() <interrupt> mcp251x_can_ist() mutex_lock(&priv->mcp_lock) mcp251x_hw_wake() disable_irq() <-- deadlock Use disable_irq_nosync() instead because the interrupt handler does everything while holding the mutex so it doesn't matter if it's still running.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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，该漏洞源于存在死锁问题。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 8ce8c0abcba314e1fe954a1840f6568bf5aef2ef ~ 3a49b6b1caf5cefc05264d29079d52c99cb188e0 -
LinuxLinux 5.5 -

II. Public POCs for CVE-2024-46791

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III. Intelligence Information for CVE-2024-46791

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Same Patch Batch · Linux · 2024-09-18 · 85 CVEs total

CVE-2024-46771can: bcm: Remove proc entry when dev is unregistered.
CVE-2024-46780nilfs2: protect references to superblock parameters exposed in sysfs
CVE-2024-46767net: phy: Fix missing of_node_put() for leds
CVE-2024-46768hwmon: (hp-wmi-sensors) Check if WMI event data exists
CVE-2024-46766ice: move netif_queue_set_napi to rtnl-protected sections
CVE-2024-46763fou: Fix null-ptr-deref in GRO.
CVE-2024-46762xen: privcmd: Fix possible access to a freed kirqfd instance
CVE-2024-46761pci/hotplug/pnv_php: Fix hotplug driver crash on Powernv
CVE-2024-46760wifi: rtw88: usb: schedule rx work after everything is set up
CVE-2024-46765ice: protect XDP configuration with a mutex
CVE-2024-46769spi: intel: Add check devm_kasprintf() returned value
CVE-2024-46770ice: Add netif_device_attach/detach into PF reset flow
CVE-2024-46772drm/amd/display: Check denominator crb_pipes before used
CVE-2024-46773drm/amd/display: Check denominator pbn_div before used
CVE-2024-46774powerpc/rtas: Prevent Spectre v1 gadget construction in sys_rtas()
CVE-2024-46775drm/amd/display: Validate function returns
CVE-2024-46776drm/amd/display: Run DC_LOG_DC after checking link->link_enc
CVE-2024-46777udf: Avoid excessive partition lengths
CVE-2024-46778drm/amd/display: Check UnboundedRequestEnabled's value
CVE-2024-46779drm/imagination: Free pvr_vm_gpuva after unlink

Showing top 20 of 85 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-46791

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