Dhcpcd: dhcpcd infinite loop and out-of-bounds read via zero-length ipv6 nd option in router advertisement handling
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | affected |
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| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Dhcpcd Project | Dhcpcd |
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| Redhat | Enterprise Linux |
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Vendor Workaround
Until an updated package is available, administrators should disable IPv6 Router Advertisement processing on interfaces where it is not required or restrict acceptance of untrusted ICMPv6 Router Advertisements using appropriate network filtering. Systems that rely on IPv6 Stateless Address Autoconfiguration (SLAAC) or Router Advertisement-based network configuration should carefully evaluate the operational impact before applying these mitigations.
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.397% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:/o:redhat:enterprise_linux:10.2 | |
| References |
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Dhcpcd Project
Dhcpcd Project dhcpcd |
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| Vendors & Products |
Dhcpcd Project
Dhcpcd Project dhcpcd |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| Description | A flaw was found in dhcpcd's IPv6 Neighbor Discovery Router Advertisement processing. A specially crafted IPv6 Router Advertisement containing a zero-length Neighbor Discovery option can bypass validation during packet storage and later be reparsed without adequate validation, causing the parser to enter a non-advancing loop. Successful exploitation may result in excessive CPU consumption, leading to a denial of service. | |
| Title | Dhcpcd: dhcpcd infinite loop and out-of-bounds read via zero-length ipv6 nd option in router advertisement handling | |
| First Time appeared |
Redhat
Redhat enterprise Linux |
|
| Weaknesses | CWE-835 | |
| CPEs | cpe:/o:redhat:enterprise_linux:10 | |
| Vendors & Products |
Redhat
Redhat enterprise Linux |
|
| References |
| |
| Metrics |
cvssV3_1
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