CVE-2022-49280

Summary

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

NFSD: prevent underflow in nfssvc_decode_writeargs()

Smatch complains:

fs/nfsd/nfsxdr.c:341 nfssvc_decode_writeargs()
warn: no lower bound on 'args->len'

Change the type to unsigned to prevent this issue.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxa51b5b737a0be93fae6ea2a18df03ab2359a3f4b < 614a61e1592051cc42d3c38f899c9f7bdaad8a1daffected
LinuxLinuxa51b5b737a0be93fae6ea2a18df03ab2359a3f4b < 2764af8ce0bf03cc43ee4a11897cab96bde6caaeaffected
LinuxLinuxa51b5b737a0be93fae6ea2a18df03ab2359a3f4b < 413d8fefafe531a9442bb623e3fe292a38f88d65affected
LinuxLinuxa51b5b737a0be93fae6ea2a18df03ab2359a3f4b < 184416d4b98509fb4c3d8fc3d6dc1437896cc159affected
LinuxLinux5.12affected
LinuxLinux0 < 5.12unaffected
LinuxLinux5.15.33 <= 5.15.*unaffected
LinuxLinux5.16.19 <= 5.16.*unaffected
LinuxLinux5.17.2 <= 5.17.*unaffected
LinuxLinux5.18 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

References