Yüksek CVSS 7.9
CVE-2026-62958: CVE-2026-62958: hatalı girdi doğrulama
Açıklama (NVD)
libriscv is a RISC-V sandbox and emulator. Prior to 1.18, a crafted ELF binary can cause out-of-bounds reads in the host emulator. `Memory<W>::binary_loader` checks `PT_LOAD` program-header bounds, but `Memory<W>::serialize_execute_segment` trusts section-header `sh_offset` and `sh_size` when locating `.text` without verifying the file range against `m_binary.size()`; `Memory<W>::lookup()` has a similar section-table problem. Malformed `.text` or `.symtab` offsets can therefore bypass the program-header checks and point outside the binary buffer, crashing rvlinux. With suitable memory layout or integer overflow, out-of-buffer host heap memory may instead be mapped into the guest by `create_execute_segment()`, potentially exposing host memory. The reported reproducer demonstrates a host SIGSEGV, while memory disclosure through grooming is described as possible rather than demonstrated. This issue is fixed in version 1.18.
Özet bilgiler
- CVSS v3.1
- 7.9
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:H - EPSS
- %0,21 (yüzdelik 11)
- CWE
- CWE-20
- Yama
- Yok / bilinmiyor