GHSA-xxf8-vfhv-w73cMediumCVSS 6.1
libsmi through 0.5.0 contains an out-of-bounds write vulnerability in smiValueAsString() in lib...
🔗 CVE IDs covered (1)
📋 Description
libsmi through 0.5.0 contains an out-of-bounds write vulnerability in smiValueAsString() in lib/smi.c that allows attackers to overflow a fixed 1024-byte static buffer through hex rendering of OCTET STRING values. Attackers can supply a crafted MIB with an OCTET STRING DEFVAL of 512 or more octets and a leading 0x00 byte to corrupt adjacent library globals and crash smidump or other consumers.
🔗 References (6)
- https://nvd.nist.gov/vuln/detail/CVE-2026-111137
- https://github.com/amartin755/libsmi
- https://github.com/amartin755/libsmi/blob/c58307210fe995ec419db976eb234aebc71a9216/lib/smi.c#L479-L566
- https://hackmd.io/@haind-pwn/libsmi-smivalueasstring-octetstring-defval-oob-write
- https://www.vulncheck.com/advisories/libsmi-through-0.5.0-out-of-bounds-write-via-smivalueasstring-octet-string-defval
- https://github.com/advisories/GHSA-xxf8-vfhv-w73c