Unrated severityNVD Advisory· Published Oct 7, 2022· Updated Sep 17, 2024
An option refcount overflow exists in dhcpd
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
17- osv-coords15 versionspkg:rpm/almalinux/dhcp-clientpkg:rpm/almalinux/dhcp-commonpkg:rpm/almalinux/dhcp-libspkg:rpm/almalinux/dhcp-relaypkg:rpm/almalinux/dhcp-serverpkg:rpm/opensuse/dhcp&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/dhcp&distro=openSUSE%20Leap%2015.4pkg:rpm/opensuse/dhcp&distro=openSUSE%20Tumbleweedpkg:rpm/suse/dhcp&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/dhcp&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP4pkg:rpm/suse/dhcp&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP3pkg:rpm/suse/dhcp&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP4pkg:rpm/suse/dhcp&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/dhcp&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/dhcp&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5
< 12:4.4.2-18.b1.el9+ 14 more
- (no CPE)range: < 12:4.4.2-18.b1.el9
- (no CPE)range: < 12:4.4.2-18.b1.el9
- (no CPE)range: < 12:4.3.6-49.el8
- (no CPE)range: < 12:4.4.2-18.b1.el9
- (no CPE)range: < 12:4.4.2-18.b1.el9
- (no CPE)range: < 4.3.6.P1-150000.6.17.1
- (no CPE)range: < 4.3.6.P1-150000.6.17.1
- (no CPE)range: < 4.4.2.P1-11.1
- (no CPE)range: < 4.3.6.P1-150000.6.17.1
- (no CPE)range: < 4.3.6.P1-150000.6.17.1
- (no CPE)range: < 4.3.6.P1-150000.6.17.1
- (no CPE)range: < 4.3.6.P1-150000.6.17.1
- (no CPE)range: < 4.3.3-10.28.1
- (no CPE)range: < 4.3.3-10.28.1
- (no CPE)range: < 4.3.3-10.28.1
Patches
Vulnerability mechanics
References
6- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2SARIK7KZ7MGQIWDRWZFAOSQSPXY4GOU/mitrevendor-advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QQXYCIWUDILRCNBAIMVFCSGXBRKEPB4K/mitrevendor-advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T6IBFH4MRRNJQVWEKILQ6I6CXWW766FX/mitrevendor-advisory
- security.gentoo.org/glsa/202305-22mitrevendor-advisory
- lists.debian.org/debian-lts-announce/2022/10/msg00015.htmlmitremailing-list
- kb.isc.org/docs/cve-2022-2928mitre
News mentions
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