CVE-2022-50415

Summary

In the Linux kernel, the following vulnerability has been resolved:

parisc: led: Fix potential null-ptr-deref in start_task()

start_task() calls create_singlethread_workqueue() and not checked the ret value, which may return NULL. And a null-ptr-deref may happen:

start_task() create_singlethread_workqueue() # failed, led_wq is NULL queue_delayed_work() queue_delayed_work_on() __queue_delayed_work() # warning here, but continue __queue_work() # access wq->flags, null-ptr-deref

Check the ret value and return -ENOMEM if it is NULL.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux3499495205a676d85fcc2f3c28e35ec9b43c47e3 < c6db0c32f39684c89c97bc1ba1c9c4249ca09e48affected
LinuxLinux3499495205a676d85fcc2f3c28e35ec9b43c47e3 < fc6d0f65f22040c6cc8a5ce032bf90252629de50affected
LinuxLinux3499495205a676d85fcc2f3c28e35ec9b43c47e3 < fc307b2905a3dd75c50a53b4d87ac9c912fb7c4eaffected
LinuxLinux3499495205a676d85fcc2f3c28e35ec9b43c47e3 < 5e4500454d75dd249be4695d83afa3ba0724c37eaffected
LinuxLinux3499495205a676d85fcc2f3c28e35ec9b43c47e3 < 3505c187b86136250b39e62c72a3a70435277af6affected
LinuxLinux3499495205a676d85fcc2f3c28e35ec9b43c47e3 < ac838c663ba1fd6bff35a817fd89a47ab55e88e0affected
LinuxLinux3499495205a676d85fcc2f3c28e35ec9b43c47e3 < 77f8b628affaec692d83ad8bfa3520db8a0cc493affected
LinuxLinux3499495205a676d85fcc2f3c28e35ec9b43c47e3 < 67c98fec87ed76b1feb2ae810051afd88dfa9df6affected
LinuxLinux3499495205a676d85fcc2f3c28e35ec9b43c47e3 < 41f563ab3c33698bdfc3403c7c2e6c94e73681e4affected
LinuxLinux2.6.15affected
LinuxLinux0 < 2.6.15unaffected
LinuxLinux4.9.337 <= 4.9.*unaffected
LinuxLinux4.14.303 <= 4.14.*unaffected
LinuxLinux4.19.270 <= 4.19.*unaffected
LinuxLinux5.4.229 <= 5.4.*unaffected
LinuxLinux5.10.163 <= 5.10.*unaffected
LinuxLinux5.15.87 <= 5.15.*unaffected
LinuxLinux6.0.18 <= 6.0.*unaffected
LinuxLinux6.1.4 <= 6.1.*unaffected
LinuxLinux6.2 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References