CVE-2023-5215
Libnbd: crash or misbehaviour when nbd server returns an unexpected block size
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
A flaw was found in libnbd. A server can reply with a block size larger than 2^63 (the NBD spec states the size is a 64-bit unsigned value). This issue could lead to an application crash or other unintended behavior for NBD clients that doesn't treat the return value of the nbd_get_size() function correctly.
Timeline
- CVE published
- Record last updated
Affected versions
- libnbd
Version range not reported
- virt:rhel/libnbd
Version range not reported
- virt:av/libnbd
Version range not reported
- virt-devel:av/libnbd
Version range not reported