CVE-2026-98635: Linux kernel · scsi: block: Fix zones_cond out-of-bounds write on zone report
Affects Linux kernelSource CVE Database V5
Not known to be exploited : upgrade to ca688bb207957cffa5a8cad207329b0dcac1f2c0 or 7c431d61b69a3fd0784c20aa4cd0b8fb501b5653 soon.
Data as of 26 Oct 2026, 14:05 UTC
Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in ca688bb207957cffa5a8cad207329b0dcac1f2c0, 7c431d61b69a3fd0784c20aa4cd0b8fb501b5653
Exploitation evidence
Disclosed: evidence found.
CVE published 18 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade Linux kernel to ca688bb207957cffa5a8cad207329b0dcac1f2c0 or 7c431d61b69a3fd0784c20aa4cd0b8fb501b5653.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in– |
AI-suggested
A fix is available and has been applied in the Linux kernel commits ca688bb207957cffa5a8cad207329b0dcac1f2c0 and 7c431d61b69a3fd0784c20aa4cd0b8fb501b5653. Users and administrators should update to the fixed kernel versions to remediate this vulnerability.
Description
A vulnerability in the Linux kernel's SCSI block subsystem allows an out-of-bounds write in the zones_cond array during zone report processing. This occurs when a device reports more zones than the array can hold, particularly if the zone count exceeds 32 bits, causing an undersized array and unchecked index writes. The issue has been fixed by validating the index against the array size and refusing to revalidate when the zone count is too large.