AZL-90216
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-90216.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-90216
- Upstream
- Published
- 2026-06-23T17:17:09Z
- Modified
- 2026-09-20T05:33:47Z
- Summary
- CVE-2026-56114 affecting package dhcpcd for versions less than 10.0.8-2
- Details
-
dhcpcd through 10.3.2, fixed in commit 2f00c7b, contains a one-byte stack out-of-bounds write vulnerability in dhcp6_makemessage() in src/dhcp6.c that allows unauthenticated same-link attackers to write beyond a fixed local buffer by serializing an oversized RFC6603 OPTION_PD_EXCLUDE option body. Attackers can send a crafted DHCPv6 ADVERTISE message containing an IA_PD IAPREFIX /0 with a valid OPTION_PD_EXCLUDE using an exclude prefix length of /121 through /128 to trigger the out-of-bounds write and potentially corrupt adjacent stack memory.
- References