CVE-2026-98587

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Source
https://cve.org/CVERecord?id=CVE-2026-98587
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98587.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-98587
Downstream
Published
2026-10-18T15:19:00Z
Modified
2026-10-19T02:46:45Z
Summary
firewire: cdev: fix back-transition for iso_resource_auto client resource
Details

In the Linux kernel, the following vulnerability has been resolved:

firewire: cdev: fix back-transition for iso_resource_auto client resource

The todo member of iso_resource_auto structure represents the state of the client resource and normally transitions in the following order:

ISO_RES_AUTO_ALLOC -> ISO_RES_AUTO_REALLOC -> ISO_RES_AUTO_DEALLOC

However, concurrent access from the work item and the file descriptor release function can cause the state to transition backwards from ISO_RES_AUTO_DEALLOC to ISO_RES_AUTO_REALLOC.

Prevent the back-transition by checking the current state before updating it in the work item.

Database specific 
{
    "cna_assigner":  "Linux",
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98587.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
fcabbf40fae501379b4f3a057febe92d4b0ebdd8
Fixed
ee1df60a0d0e8ab4b00137135733bdadd6d33dab
Fixed
c6b51091cafff9ce6c03c1416aa13864d17ab97c

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98587.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
7.2.0
Fixed
7.2.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98587.json"