Answer in brief
CVE-2026-89854 records a High severity (CVSS 7.8) vulnerability in scsi: qla2xxx: Fix cs84xx use-after-free on host teardown. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=fe1b806f4f7172b1eae18ddeebb7d8fb351043f7 <8c1ebcade6aac58137f2645b579894301febabf3 || >=fe1b806f4f7172b1eae18ddeebb7d8fb351043f7 <1d8bbc4344b9367d9d54731475d745fbc9ea28f2 || >=fe1b806f4f7172b1eae18ddeebb7d8fb351043f7 <2c3b17ee53f034936f7398dbf4d143e608b7c35c || >=fe1b806f4f7172b1eae18ddeebb7d8fb351043f7 <ae09260be7454ed7630a913f147591a25e3a9d09 || >=fe1b806f4f7172b1eae18ddeebb7d8fb351043f7 <fcf0804dfe05862007189ac9dc4dc2063be36de1 || >=fe1b806f4f7172b1eae18ddeebb7d8fb351043f7 <8286a9095fb59751fba171afa2b4f590271c87d5 || >=fe1b806f4f7172b1eae18ddeebb7d8fb351043f7 <122bf170c94a3797531b12fee580639a5dc893ed || >=fe1b806f4f7172b1eae18ddeebb7d8fb351043f7 <33d102102d925357c5fd172dd6672a27d74b3215 | 8c1ebcade6aac58137f2645b579894301febabf3, 1d8bbc4344b9367d9d54731475d745fbc9ea28f2, 2c3b17ee53f034936f7398dbf4d143e608b7c35c, ae09260be7454ed7630a913f147591a25e3a9d09, fcf0804dfe05862007189ac9dc4dc2063be36de1, 8286a9095fb59751fba171afa2b4f590271c87d5, 122bf170c94a3797531b12fee580639a5dc893ed, 33d102102d925357c5fd172dd6672a27d74b3215 |
| Linux/Linuxgeneric | 3.14 | Not reported |
Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 16, 2026
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix cs84xx use-after-free on host teardown qla84xx_put_chip() drops the last reference to ha->cs84xx and frees it via __qla84xx_chip_release() without clearing ha->cs84xx. During teardown it ran before scsi_remove_host(), which is what removes the 84xx_fw_version host sysfs attribute. A concurrent read of that attribute in the window between the two calls executes qla24xx_84xx_fw_version_show(), which dereferences the freed ha->cs84xx, resulting in a use-after-free. Move qla84xx_put_chip() to after scsi_remove_host() in both qla2x00_remove_one() and qla2x00_disable_board_on_pci_error(). Once scsi_remove_host() returns, the sysfs attribute is gone and kernfs has drained any in-flight show(), so no reader can touch cs84xx; the put still runs before the host and ha are freed.
Quoted source text, attributed separately from HOL analysis.