Memory corruption via out-of-bounds VP bitmap write
Published Sep 25, 2026 · Updated Sep 25, 2026
Out-of-bounds write in the Linux qla2xxx SCSI driver allows attackers to corrupt kernel request data through a high virtual-port index. qla25xx_ctrlvp_iocb() derives a byte offset from vp_index and writes into the fixed 16-byte vp_idx_map without checking that the offset is below the array length. Reachability requires a QLogic Fibre Channel adapter whose firmware reports more than 128 virtual ports and an attempt to control an index above 128; adapters reporting 63 or 127 are unaffected.
Summary
What happened
Out-of-bounds write in the Linux qla2xxx SCSI driver allows attackers to corrupt kernel request data through a high virtual-port index. qla25xx_ctrlvp_iocb() derives a byte offset from vp_index and writes into the fixed 16-byte vp_idx_map without checking that the offset is below the array length. Reachability requires a QLogic Fibre Channel adapter whose firmware reports more than 128 virtual ports and an attempt to control an index above 128; adapters reporting 63 or 127 are unaffected.
The record
- CVE
- CVE-2026-97535
- Published
- Sep 25, 2026
- Updated
- Sep 25, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- Unavailable
- Attack vector
- Unavailable
- Privileges
- Unavailable
Timeline
How it unfolded
- Sep 25, 2026CVE publishedPublication date reported by the CVE source.
- Sep 25, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=2853192e154b813fe34a6cbee5e34dfef50d29d0 <13354ad251ab009102597a791bc7c4d2265229e1
- Affected versionversion=2853192e154b813fe34a6cbee5e34dfef50d29d0 <48a44e19746eaa70320a3c2571dcb345192fca72
- Affected versionversion=2853192e154b813fe34a6cbee5e34dfef50d29d0 <878613ecb5a36db26859c4fd83daf9283a334fa2
- Affected versionversion=4.16
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Activity data is delayed. The latest report is Sep 28, 2026.
Weakness, pattern, technique
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Public exploit references
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Technologies
Your stack
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