GHSA-cjch-253g-8hp2

GHSA-cjch-253g-8hp2 PUBLISHED CVSS 4.800000190734863 MEDIUM

Record from GitHub Advisory Database · Published November 18, 2025

A vulnerability has been identified in the GRUB (Grand Unified Bootloader) component. This flaw occurs because the bootloader mishandles string conversion when reading information from a USB device, allowing an attacker to exploit inconsistent length values. A local attacker can connect a maliciously configured USB device during the boot sequence to trigger this issue. A successful exploitation may lead GRUB to crash, leading to a Denial of Service. Data corruption may be also possible, although given the complexity of the exploit the impact is most likely limited.

Risk scores

CVSS 3.1

4.800000190734863

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

Timeline

Nov 18, 2025 CVE Published
May 1, 2026 Security Advisory

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The same record, from the CLI:

vulnetix vdb vuln GHSA-cjch-253g-8hp2
vulnetix vdb fixes GHSA-cjch-253g-8hp2

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curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
  "https://api.vdb.vulnetix.com/v2/vuln/GHSA-cjch-253g-8hp2/fixes/registry"

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References

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