Kernel fault via unchecked management-response task identifiers
Published Oct 28, 2026 · Updated Oct 28, 2026
NULL-pointer dereference in Linux libiscsi allows remote attackers to trigger a kernel oops via crafted iSCSI responses. In __iscsi_complete_pdu(), management-response task lookup checks the pool index but accepts unused slots, whose NULL connection pointer is dereferenced during completion. Exploitation requires control of the connected iSCSI target or injection into its traffic; the fault interrupts processing and panics the host when panic_on_oops is enabled.
Summary
What happened
NULL-pointer dereference in Linux libiscsi allows remote attackers to trigger a kernel oops via crafted iSCSI responses. In __iscsi_complete_pdu(), management-response task lookup checks the pool index but accepts unused slots, whose NULL connection pointer is dereferenced during completion. Exploitation requires control of the connected iSCSI target or injection into its traffic; the fault interrupts processing and panics the host when panic_on_oops is enabled.
The record
- CVE
- CVE-2026-99152
- Published
- Oct 28, 2026
- Updated
- Oct 28, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- T1499.004
- Attack vector
- network
- Privileges
- Unavailable
Timeline
How it unfolded
- Oct 28, 2026CVE publishedPublication date reported by the CVE source.
- Oct 28, 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=2.6.18
- Affected versionversion=7996a778ff8c717cb1a7a294475c59cc8f1e9fb8 <11bffcd9cb346732eab2914ef44fe777a3f0b585
- Affected versionversion=7996a778ff8c717cb1a7a294475c59cc8f1e9fb8 <55a65ef61e2775aeb18fda63bd1959fa8b41f936
- Affected versionversion=7996a778ff8c717cb1a7a294475c59cc8f1e9fb8 <f721487523d45941aed4b0ac8d829b0461a7d860
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
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Attacks
What attackers are doing with it
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Activity data is delayed. The latest report is Sep 28, 2026.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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