Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: block: zero non-PI portion of auto integrity buffer The auto-generated integrity buffer for writes needs to be fully initialized before being passed to the underlying block device, otherwise the uninitialized memory can be read back by userspace or anyone with physical access to the storage device. If protection information is generated, that portion of the integrity buffer is already initialized. The integrity data is also zeroed if PI generation is disabled via sysfs or the PI tuple size is 0. However, this misses the case where PI is generated and the PI tuple size is nonzero, but the metadata size is larger than the PI tuple. In this case, the remainder ("opaque") of the metadata is left uninitialized. Generalize the BLK_INTEGRITY_CSUM_NONE check to cover any case when the metadata is larger than just the PI tuple.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.11.1, < 6.18.7 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/ca22c566b89164f6e670af56ecc45f47ef3df819Patch
- https://git.kernel.org/stable/c/d6072557b90e0c557df319a56f4a9dc482706d2cPatch
FAQ
What is CVE-2026-23007?
CVE-2026-23007 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: block: zero non-PI portion of auto integrity buffer The auto-generated integrity buffer for writes needs to be fully initialized b...
How severe is CVE-2026-23007?
CVE-2026-23007 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-23007?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.