CVE-2026-89863

Kernel crash via stale firmware completion

Published Sep 16, 2026 · Updated Sep 16, 2026

NULL pointer dereference in Linux 5.15 crashes the kernel when qla2xxx processes a stale firmware status completion. qla_chk_edif_rx_sa_delete_pending() dereferences cmd->sc_data_direction before verifying that GET_CMD_SP(sp) returned a command. The crash occurs in interrupt context and requires the qla2xxx EDIF path plus a firmware completion for an already returned or aborted command.

CVSS severityUnavailable
Unscored
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Linux 5.15 crashes the kernel when qla2xxx processes a stale firmware status completion. qla_chk_edif_rx_sa_delete_pending() dereferences cmd->sc_data_direction before verifying that GET_CMD_SP(sp) returned a command. The crash occurs in interrupt context and requires the qla2xxx EDIF path plus a firmware completion for an already returned or aborted command.

The record

CVE
CVE-2026-89863
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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.

  1. Affected versionversion=5.15
  2. Affected versionversion=dd30706e73b70d67e88fdaca688db7a3374fd5de <2191b0034a2f1307d421782e6eceddf8eec9e7f6
  3. Affected versionversion=dd30706e73b70d67e88fdaca688db7a3374fd5de <75fd6d041c4a325ae37f4683e6678d3015988bb0
  4. Affected versionversion=dd30706e73b70d67e88fdaca688db7a3374fd5de <94bfb61478bcb207d27f8cd24fd231421059519f
  5. Affected versionversion=dd30706e73b70d67e88fdaca688db7a3374fd5de <96eb8a3fc9f7fe7ba32679fcf1d2fd7d251e7a8b
  6. Affected versionversion=dd30706e73b70d67e88fdaca688db7a3374fd5de <c20ee380ca59c5a8646750c4849969a815924e2e
  7. Affected versionversion=dd30706e73b70d67e88fdaca688db7a3374fd5de <de0c8ef3b900c5e971c82ef38c6f5c22c5f3d8c1
  8. Affected versionversion=dd30706e73b70d67e88fdaca688db7a3374fd5de <e479e9b148456905d12711411484b94083c8ff58

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=5.15; version=dd30706e73b70d67e88fdaca688db7a3374fd5de <2191b0034a2f1307d421782e6eceddf8eec9e7f6; version=dd30706e73b70d67e88fdaca688db7a3374fd5de <75fd6d041c4a325ae37f4683e6678d3015988bb0; version=dd30706e73b70d67e88fdaca688db7a3374fd5de <94bfb61478bcb207d27f8cd24fd231421059519f; version=dd30706e73b70d67e88fdaca688db7a3374fd5de <96eb8a3fc9f7fe7ba32679fcf1d2fd7d251e7a8b; version=dd30706e73b70d67e88fdaca688db7a3374fd5de <c20ee380ca59c5a8646750c4849969a815924e2e; version=dd30706e73b70d67e88fdaca688db7a3374fd5de <de0c8ef3b900c5e971c82ef38c6f5c22c5f3d8c1; version=dd30706e73b70d67e88fdaca688db7a3374fd5de <e479e9b148456905d12711411484b94083c8ff58

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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