← CVE Intelligence

CVE-2022-2928

An option refcount overflow exists in dhcpd PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
ISC / ISC DHCPaffected 4.4.0 through versions before 4.4.3-P1; affected 4.1 ESV 4.1-ESV-R1 through versions before 4.1-ESV-R16-P1

CWE

No CWE identifiers supplied.

References

ADP enrichment

CVE

No English description supplied.