OPENSUSE-SU-2026:10592-1

Vulnerability from csaf_opensuse - Published: 2026-04-21 00:00 - Updated: 2026-04-21 00:00
Summary
libcoap-devel-4.3.5b-1.1 on GA media
Severity
Moderate
Notes
Title of the patch: libcoap-devel-4.3.5b-1.1 on GA media
Description of the patch: These are all security issues fixed in the libcoap-devel-4.3.5b-1.1 package on the GA media of openSUSE Tumbleweed.
Patchnames: openSUSE-Tumbleweed-2026-10592
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
CVE-2026-29013
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
References
To clipboard 

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          "category": "general",
          "text": "libcoap contains out-of-bounds read vulnerabilities in OSCORE Appendix B.2 CBOR unwrap handling where get_byte_inc() in src/oscore/oscore_cbor.c relies solely on assert() for bounds checking, which is removed in release builds compiled with NDEBUG. Attackers can send crafted CoAP requests with malformed OSCORE options or responses during OSCORE negotiation to trigger out-of-bounds reads during CBOR parsing and potentially cause heap buffer overflow writes through integer wraparound in allocation size computation.",
          "title": "CVE description"
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          "date": "2026-04-21T00:00:00Z",
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}


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  • 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.
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