CVE-2026-89854
CVE CVE-2026-89854EUVD EUVD-2026-80454Published 2026-09-16T10:31:27.000ZLast changed 2026-09-16T14:39:19.000ZCVSS 7.8
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux 3.14; fe1b806f4f7172b1eae18ddeebb7d8fb351043f7 <33d102102d925357c5fd172dd6672a27d74b3215; patch: 6.12.110; patch: 6.18.51; fe1b806f4f7172b1eae18ddeebb7d8fb351043f7 <8c1ebcade6aac58137f2645b579894301febabf3; fe1b806f4f7172b1eae18ddeebb7d8fb351043f7 <1d8bbc4344b9367d9d54731475d745fbc9ea28f2; fe1b806f4f7172b1eae18ddeebb7d8fb351043f7 <122bf170c94a3797531b12fee580639a5dc893ed; patch: 5.10.270; patch: 7.3-rc1; patch: 0; patch: 7.2.5; fe1b806f4f7172b1eae18ddeebb7d8fb351043f7 <2c3b17ee53f034936f7398dbf4d143e608b7c35c; patch: 6.1.188; patch: 5.15.221; patch: 6.6.157; fe1b806f4f7172b1eae18ddeebb7d8fb351043f7 <8286a9095fb59751fba171afa2b4f590271c87d5; fe1b806f4f7172b1eae18ddeebb7d8fb351043f7 <ae09260be7454ed7630a913f147591a25e3a9d09; fe1b806f4f7172b1eae18ddeebb7d8fb351043f7 <fcf0804dfe05862007189ac9dc4dc2063be36de1
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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