CVE-2022-49731

Summary

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

ata: libata-core: fix NULL pointer deref in ata_host_alloc_pinfo()

In an unlikely (and probably wrong?) case that the 'ppi' parameter of ata_host_alloc_pinfo() points to an array starting with a NULL pointer, there's going to be a kernel oops as the 'pi' local variable won't get reassigned from the initial value of NULL. Initialize 'pi' instead to '&ata_dummy_port_info' to fix the possible kernel oops for good…

Found by Linux Verification Center (linuxtesting.org) with the SVACE static analysis tool.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxf5cda257296fbd3683b1f568f2d94d3caaacf74d < ca4693e6e06e4fd2b240c0fec47aa2498c94848eaffected
LinuxLinuxf5cda257296fbd3683b1f568f2d94d3caaacf74d < 1ac5efee33f29e704226506d429b84575a5d66f8affected
LinuxLinuxf5cda257296fbd3683b1f568f2d94d3caaacf74d < a810bd5af06977a847d1f202b22d7defd5c62497affected
LinuxLinuxf5cda257296fbd3683b1f568f2d94d3caaacf74d < 253334f84c81bc6a43af489f108c0bddad989eefaffected
LinuxLinuxf5cda257296fbd3683b1f568f2d94d3caaacf74d < 36cd19e7d4e5571d77a2ed20c5b6ef50cf57734aaffected
LinuxLinuxf5cda257296fbd3683b1f568f2d94d3caaacf74d < ff128fbea720bf763fa345680dda5f050bc24a47affected
LinuxLinuxf5cda257296fbd3683b1f568f2d94d3caaacf74d < 07cbdb4807d369fbda73062a91b570c4dc5ec429affected
LinuxLinuxf5cda257296fbd3683b1f568f2d94d3caaacf74d < bf476fe22aa1851bab4728e0c49025a6a0bea307affected
LinuxLinux2.6.22affected
LinuxLinux0 < 2.6.22unaffected
LinuxLinux4.9.320 <= 4.9.*unaffected
LinuxLinux4.14.285 <= 4.14.*unaffected
LinuxLinux4.19.249 <= 4.19.*unaffected
LinuxLinux5.4.200 <= 5.4.*unaffected
LinuxLinux5.10.124 <= 5.10.*unaffected
LinuxLinux5.15.49 <= 5.15.*unaffected
LinuxLinux5.18.6 <= 5.18.*unaffected
LinuxLinux5.19 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

References