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CVE-2024-46706— tty: serial: fsl_lpuart: mark last busy before uart_add_one_port

EPSS 0.02% · P6
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I. Basic Information for CVE-2024-46706

Vulnerability Information
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Vulnerability Title
tty: serial: fsl_lpuart: mark last busy before uart_add_one_port
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: tty: serial: fsl_lpuart: mark last busy before uart_add_one_port With "earlycon initcall_debug=1 loglevel=8" in bootargs, kernel sometimes boot hang. It is because normal console still is not ready, but runtime suspend is called, so early console putchar will hang in waiting TRDE set in UARTSTAT. The lpuart driver has auto suspend delay set to 3000ms, but during uart_add_one_port, a child device serial ctrl will added and probed with its pm runtime enabled(see serial_ctrl.c). The runtime suspend call path is: device_add |-> bus_probe_device |->device_initial_probe |->__device_attach |-> pm_runtime_get_sync(dev->parent); |-> pm_request_idle(dev); |-> pm_runtime_put(dev->parent); So in the end, before normal console ready, the lpuart get runtime suspended. And earlycon putchar will hang. To address the issue, mark last busy just after pm_runtime_enable, three seconds is long enough to switch from bootconsole to normal console.
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，该漏洞源于在添加串行端口时未能正确处理设备忙状态。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 43543e6f539b3e646348c253059f75e27d63c94d ~ 8eb92cfca6c2c5a15ab1773f3d18ab8d8f7dbb68 -
LinuxLinux 6.2 -

II. Public POCs for CVE-2024-46706

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III. Intelligence Information for CVE-2024-46706

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Same Patch Batch · Linux · 2024-09-13 · 40 CVEs total

CVE-2024-46703Revert "serial: 8250_omap: Set the console genpd always on if no console suspend"
CVE-2024-46692firmware: qcom: scm: Mark get_wq_ctx() as atomic call
CVE-2024-46694drm/amd/display: avoid using null object of framebuffer
CVE-2024-46696nfsd: fix potential UAF in nfsd4_cb_getattr_release
CVE-2024-46695selinux,smack: don't bypass permissions check in inode_setsecctx hook
CVE-2024-46698video/aperture: optionally match the device in sysfb_disable()
CVE-2024-46697nfsd: ensure that nfsd4_fattr_args.context is zeroed out
CVE-2024-46699drm/v3d: Disable preemption while updating GPU stats
CVE-2024-46701libfs: fix infinite directory reads for offset dir
CVE-2024-46702thunderbolt: Mark XDomain as unplugged when router is removed
CVE-2024-46693soc: qcom: pmic_glink: Fix race during initialization
CVE-2024-46704workqueue: Fix spruious data race in __flush_work()
CVE-2024-46705drm/xe: reset mmio mappings with devm
CVE-2024-46707KVM: arm64: Make ICC_*SGI*_EL1 undef in the absence of a vGICv3
CVE-2024-46709drm/vmwgfx: Fix prime with external buffers
CVE-2024-46708pinctrl: qcom: x1e80100: Fix special pin offsets
CVE-2024-46710drm/vmwgfx: Prevent unmapping active read buffers
CVE-2024-46711mptcp: pm: fix ID 0 endp usage after multiple re-creations
CVE-2024-46712drm/vmwgfx: Disable coherent dumb buffers without 3d
CVE-2024-46713perf/aux: Fix AUX buffer serialization

Showing top 20 of 40 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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