CVE-2022-2928

Name
CVE-2022-2928
Description
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.
NVD Severity
medium
Other trackers
Mailing lists
Exploits
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
CONFIRM https://kb.isc.org/docs/cve-2022-2928
MISC https://www.cve.org/CVERecord?id=CVE-2022-2928
MLIST https://lists.debian.org/debian-lts-announce/2022/10/msg00015.html
FEDORA https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QQXYCIWUDILRCNBAIMVFCSGXBRKEPB4K/
Mailing List https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T6IBFH4MRRNJQVWEKILQ6I6CXWW766FX/
Mailing List https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2SARIK7KZ7MGQIWDRWZFAOSQSPXY4GOU/

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:isc:dhcp:4.1-esv:r12:*:*:*:*:*:* dhcp == None == 4.1-esv
cpe:2.3:a:isc:dhcp:*:*:*:*:*:*:*:* dhcp >= 4.4.0 <= 4.4.3

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
dhcp 3.16-main 4.4.3_p1-r0 Jakub Jirutka <jakub@jirutka.cz> fixed