CVE-2026-23007None▾ TwilightPoC availableIn 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 …
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 2.8 · likelihood 0 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Public exploit / PoC code seen in 1 source. Availability, not in-the-wild use.
Exploit-prediction probability, daily snapshots since Oct 21.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
0.2% → 0.2%
1 GitHub repo (last check)
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.
Linux >= c546d6f438338017480d105ab597292da67f6f6a < 765bf0a5880777c04ae98fc2a9f3b995737b3a64Linux >= c546d6f438338017480d105ab597292da67f6f6a < d6072557b90e0c557df319a56f4a9dc482706d2cLinux >= c546d6f438338017480d105ab597292da67f6f6a < ca22c566b89164f6e670af56ecc45f47ef3df819Linux 6.11Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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