CVE-2026-98587
Description
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.
How to fix
- Linux Linuxee1df60a0d0e8ab4b00137135733bdadd6d33dab, c6b51091cafff9ce6c03c1416aa13864d17ab97c or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | fcabbf40fae501379b4f3a057febe92d4b0ebdd8 ≤ v < ee1df60a0d0e8ab4b00137135733bdadd6d33dab, fcabbf40fae501379b4f3a057febe92d4b0ebdd8 ≤ v < c6b51091cafff9ce6c03c1416aa13864d17ab97c, 7.2 | ee1df60a0d0e8ab4b00137135733bdadd6d33dab, c6b51091cafff9ce6c03c1416aa13864d17ab97c |
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