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Integer Overflow or Wraparound The advisory has been revoked - it doesn't affect any version of package dhcp-server  (opens in a new tab)

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EPSS
0.71% (52nd percentile)

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  • Snyk IDSNYK-RHEL9-DHCPSERVER-11488635
  • published6 Aug 2025
  • disclosed5 Oct 2022
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Introduced: 5 Oct 2022

CVE-2022-2928  (opens in a new tab)
CWE-190  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:9.

NVD Description

Note: Versions mentioned in the description apply only to the upstream dhcp-server package and not the dhcp-server package as distributed by RHEL.

In ISC DHCP 4.4.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1, when the function option_code_hash_lookup() is called from add_option(), it increases the option's refcount field. However, there is not a corresponding call to option_dereference() to decrement the refcount field. The function add_option() is only used in server responses to lease query packets. Each lease query response calls this function for several options, so eventually, the reference counters could overflow and cause the server to abort.

References