Vulnerability-Lookup

OPENSUSE-SU-2026:21220-1

Vulnerability from csaf_opensuse - Published: 2026-07-02 13:13 - Updated: 2026-07-02 13:13

Summary

Security update for dhcpcd

Severity

Moderate

Notes

Title of the patch: Security update for dhcpcd

Description of the patch: This update for dhcpcd fixes the following issue Update to 10.3.2: - CVE-2025-70102: NULL pointer dereference in `parse_option()` when processing a specially crafted configuration input (bsc#1268761). Changes for dhcpcd: * options: Ensure ldop is not NULL dereferenced * DHCP: Don't run double EXPIRE hooks on carrier loss * DHCP: free the state when dropping on state NONE * BSD: don't send uninitialised memory using ps_root_indirectioctl * Fix fallback_time option * IPv4: Ignore DHCP state when building routes * route: Routes may not have an interface assinged * options: Ensure that an overly long bitflag string does not crash * options: Don't assume vsio options have an argument * common: Cast via uintptr_t rather than unsigned long in UNCONST * privsep: Ensure we recv for real after a successful recv MSG_PEEK * DHCP: Add parentheses to macro definitions * ipv6nd: empty IPV6RA_EXPIRE eloop queue when dropping * privsep: enforce message boundaries with MSG_EOR on our messages * Protocols will notify when dhcpcd can exit * DHCP: Don't request T1 and T2 * DHCP: Don't request a lease time * DHCP6: Don't exit if using DHCP4 INFORM in non manager mode * ND: Route Information Option prefix is optional * ipv6: respect slaac hwaddr to really use the hwaddr * When stopping all interfaces at exit and releasing, remove persistance * NetBSD: Delete RTF_CONNECTED route when changing it * privsep: Drain the log when the root process is exiting * eloop: vastly reworked, kqueue and epoll support on by default

Patchnames: openSUSE-Leap-16.0-1147

CVE-2025-70102

5.5 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

Recommended 3 products

Product	Version	Remediation
Unresolved product id: openSUSE Leap 16.0:dhcpcd-10.3.2-160000.1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:dhcpcd-10.3.2-160000.1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:dhcpcd-10.3.2-160000.1.1.x86_64	—	Vendor Fix

Threats

Impact moderate

References

6 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/o…	self
https://bugzilla.suse.com/1268761	self
https://www.suse.com/security/cve/CVE-2025-70102/	self
https://www.suse.com/security/cve/CVE-2025-70102	external
https://bugzilla.suse.com/1268761	external

JSON

To clipboard

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        "text": "This update for dhcpcd fixes the following issue\n\nUpdate to 10.3.2:\n\n- CVE-2025-70102: NULL pointer dereference in `parse_option()` when processing a specially crafted configuration input\n  (bsc#1268761).\n\nChanges for dhcpcd:\n\n * options: Ensure ldop is not NULL dereferenced\n * DHCP: Don\u0027t run double EXPIRE hooks on carrier loss\n * DHCP: free the state when dropping on state NONE\n * BSD: don\u0027t send uninitialised memory using\n ps_root_indirectioctl\n * Fix fallback_time option\n * IPv4: Ignore DHCP state when building routes\n * route: Routes may not have an interface assinged\n * options: Ensure that an overly long bitflag string does not\n crash\n * options: Don\u0027t assume vsio options have an argument\n * common: Cast via uintptr_t rather than unsigned long in UNCONST\n * privsep: Ensure we recv for real after a successful recv\n MSG_PEEK\n * DHCP: Add parentheses to macro definitions\n * ipv6nd: empty IPV6RA_EXPIRE eloop queue when dropping\n * privsep: enforce message boundaries with MSG_EOR on our\n messages\n * Protocols will notify when dhcpcd can exit\n * DHCP: Don\u0027t request T1 and T2\n * DHCP: Don\u0027t request a lease time\n * DHCP6: Don\u0027t exit if using DHCP4 INFORM in non manager mode\n * ND: Route Information Option prefix is optional\n * ipv6: respect slaac hwaddr to really use the hwaddr\n * When stopping all interfaces at exit and releasing,\n remove persistance\n * NetBSD: Delete RTF_CONNECTED route when changing it\n * privsep: Drain the log when the root process is exiting\n * eloop: vastly reworked, kqueue and epoll support on by default\n",
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      "notes": [
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          "category": "general",
          "text": "A NULL pointer dereference occurs in Roy Marples NetworkConfiguration/dhcpcd 10.3.0 while parsing configuration options. In parse_option() (src/if-options.c:1886), the code performs a member access on a NULL pointer of type \u0027struct dhcp_opt\u0027 when an unexpected/invalid option token or parsing state causes the lookup to yield NULL. The instrumented fuzzing build reports \u0027runtime error: member access within null pointer of type struct dhcp_opt\u0027 and aborts.",
          "title": "CVE description"
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          "date": "2026-07-02T13:13:57Z",
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      "title": "CVE-2025-70102"
    }
  ]
}

CVE-2025-70102 (GCVE-0-2025-70102)

Vulnerability from cvelistv5 – Published: 2026-06-15 00:00 – Updated: 2026-06-16 14:47

Summary

A NULL pointer dereference occurs in Roy Marples NetworkConfiguration/dhcpcd 10.3.0 while parsing configuration options. In parse_option() (src/if-options.c:1886), the code performs a member access on a NULL pointer of type 'struct dhcp_opt' when an unexpected/invalid option token or parsing state causes the lookup to yield NULL. The instrumented fuzzing build reports 'runtime error: member access within null pointer of type struct dhcp_opt' and aborts.

Severity

6.3 (Medium)


                        
                          CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

n/a
CWE-476 - NULL Pointer Dereference

Assigner

mitre

References

1 reference

URL	Tags
https://infosec.exchange/@sigdevel/116733594508542047

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "ADJACENT_NETWORK",
              "availabilityImpact": "LOW",
              "baseScore": 6.3,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-70102",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-16T14:47:28.342031Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-476",
                "description": "CWE-476 NULL Pointer Dereference",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-16T14:47:32.985Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A NULL pointer dereference occurs in Roy Marples NetworkConfiguration/dhcpcd 10.3.0 while parsing configuration options. In parse_option() (src/if-options.c:1886), the code performs a member access on a NULL pointer of type \u0027struct dhcp_opt\u0027 when an unexpected/invalid option token or parsing state causes the lookup to yield NULL. The instrumented fuzzing build reports \u0027runtime error: member access within null pointer of type struct dhcp_opt\u0027 and aborts."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-15T18:52:37.376Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://infosec.exchange/@sigdevel/116733594508542047"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2025-70102",
    "datePublished": "2026-06-15T00:00:00.000Z",
    "dateReserved": "2026-01-09T00:00:00.000Z",
    "dateUpdated": "2026-06-16T14:47:32.985Z",
    "state": "PUBLISHED"
  },
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

OPENSUSE-SU-2026:21220-1

CVE-2025-70102 (GCVE-0-2025-70102)

Tags

Sightings

Nomenclature