Security update for dhcpcd
This update for dhcpcd fixes the following issues: Update to 10.5.0. Security issues fixed: - CVE-2026-56113: crafted DHCPv6 RENEW reply can lead to a denial of service (bsc#1268980). - CVE-2026-56115: crafted DHCPv6 ADVERTISE message can cause a one-byte stack out-of-bounds write (bsc#1268976). - CVE-2026-56116: crafted Router Advertisements containing Route Information options with a zero lifetime can lead to a memory leak (bsc#1268974). - CVE-2026-56117: crafted privileged command sent over a writable control socket can lead to a heap use-after-free (bsc#1268968). Changes for dhcpcd: - 10.5.0: * Add missing SPDX-License tags * Format code with clang-format v19 * privsep: Change IPC to use SOCK_STREAM * BPF: Split OS specific code out into own files and add libpcap support * hooks: Escape interface names and use printf * Delete DHCPv6 IA FD from the loop before closing it * eloop: Use kqueue or epoll to wait for a fd to become ready * Darwin: Add initial support for macOS * Import latest pidfile from NetBSD * BPF: Improve headers * compat: Add support for getprogname(3) * route: Rework rt structure so sockaddrs are pointers * dhcp-common: Escape ifname for lease file * privsep: smaller buffer size without INET6 * script: add ifxname as the escaped string * time.h always pulls in struct timespec * route: Use HAVE_RT_MISSFILTER rather than a generic BSD define * privsep: Test defines for all ioctls * if: if_init inits the interface from the kernel * privsep: Add ps_root_getho
SUSE-SU-2026:23562-1
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:SUSE-SU-2026:23562-1
dhcpcd
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 10.5.0-160000.1.1
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
dhcpcd
Source reference: /affected/1/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 10.5.0-160000.1.1
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "10.5.0-160000.1.1"
}
]
}
],
"package": {
"name": "dhcpcd",
"purl": "pkg:rpm/suse/dhcpcd&distro=SUSE%20Linux%20Enterprise%20Server%2016.0",
"ecosystem": "SUSE:Linux Enterprise Server 16.0"
},
"database_specific": {
"source": "https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:23562-1.json"
},
"ecosystem_specific": {
"binaries": [
{
"dhcpcd": "10.5.0-160000.1.1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "10.5.0-160000.1.1"
}
]
}
],
"package": {
"name": "dhcpcd",
"purl": "pkg:rpm/suse/dhcpcd&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0",
"ecosystem": "SUSE:Linux Enterprise Server for SAP applications 16.0"
},
"database_specific": {
"source": "https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:23562-1.json"
},
"ecosystem_specific": {
"binaries": [
{
"dhcpcd": "10.5.0-160000.1.1"
}
]
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #30772 · Revision 1
- Added to Heist Feed
- Publisher date