// For flags

CVE-2022-49379

driver core: Fix wait_for_device_probe() & deferred_probe_timeout interaction

Time Line
Published
2024-03-19
Updated
2024-03-19
Firt exploit
2024-03-19
Overview
Descriptions (1)
MITRE
CWE (0)
CAPEC (-)
Risk
CVSS Score
-
SSVC
-
KEV
-
EPSS
Affected Products (-)
Vendors (1)
linux
Products (1)
linux_kernel
Versions (5)
>= 5.7 < 5.10.122, >= 5.7 < 5.15.47, >= 5.7 < 5.17.15, >= 5.7 < 5.18.4, >= 5.7 < 5.19
Intel Resources (-)
Advisories (-)
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Plugins (-)
-
References (6)
General (1)
kernel
Exploits & POcs (-)
Patches (5)
kernel
Advisories (-)
Summary
Descriptions

In the Linux kernel, the following vulnerability has been resolved: driver core: Fix wait_for_device_probe() & deferred_probe_timeout interaction Mounting NFS rootfs was timing out when deferred_probe_timeout was
non-zero [1]. This was because ip_auto_config() initcall times out
waiting for the network interfaces to show up when
deferred_probe_timeout was non-zero. While ip_auto_config() calls
wait_for_device_probe() to make sure any currently running deferred
probe work or asynchronous probe finishes, that wasn't sufficient to
account for devices being deferred until deferred_probe_timeout. Commit 35a672363ab3 ("driver core: Ensure wait_for_device_probe() waits
until the deferred_probe_timeout fires") tried to fix that by making
sure wait_for_device_probe() waits for deferred_probe_timeout to expire
before returning. However, if wait_for_device_probe() is called from the kernel_init()
context: - Before deferred_probe_initcall() [2], it causes the boot process to hang due to a deadlock. - After deferred_probe_initcall() [3], it blocks kernel_init() from continuing till deferred_probe_timeout expires and beats the point of deferred_probe_timeout that's trying to wait for userspace to load modules. Neither of this is good. So revert the changes to
wait_for_device_probe(). [1] - https://lore.kernel.org/lkml/TYAPR01MB45443DF63B9EF29054F7C41FD8C60@TYAPR01MB4544.jpnprd01.prod.outlook.com/
[2] - https://lore.kernel.org/lkml/YowHNo4sBjr9ijZr@dev-arch.thelio-3990X/
[3] - https://lore.kernel.org/lkml/Yo3WvGnNk3LvLb7R@linutronix.de/

*Credits: N/A
CVSS Scores
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Privileges Required
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User Interaction
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Scope
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* Common Vulnerability Scoring System
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Exploitation
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* Organization's Worst-case Scenario
Timeline
  • 2025-02-26 CVE Reserved
  • 2025-02-26 CVE Published
  • 2025-02-26 CVE Updated
  • ---------- EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
CAPEC
Threat Intelligence Resources (0)
Security Advisory details:

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Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 5.7 < 5.10.122
Search vendor "Linux" for product "Linux Kernel" and version " >= 5.7 < 5.10.122"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 5.7 < 5.15.47
Search vendor "Linux" for product "Linux Kernel" and version " >= 5.7 < 5.15.47"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 5.7 < 5.17.15
Search vendor "Linux" for product "Linux Kernel" and version " >= 5.7 < 5.17.15"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 5.7 < 5.18.4
Search vendor "Linux" for product "Linux Kernel" and version " >= 5.7 < 5.18.4"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 5.7 < 5.19
Search vendor "Linux" for product "Linux Kernel" and version " >= 5.7 < 5.19"
en
Affected