firewire: cdev: fix back-transition for iso_resource_auto client resource
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 7.2.9
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From fcabbf40fae501379b4f3a057febe92d4b0ebdd8 · fixed in ee1df60a0d0e8ab4b00137135733bdadd6d33dab; From fcabbf40fae501379b4f3a057febe92d4b0ebdd8 · fixed in c6b51091cafff9ce6c03c1416aa13864d17ab97c
- Linux Linux
7.2
- KernelLinux
From 7.2.0 · fixed in 7.2.9