CVE-2024-53148

Summary

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

comedi: Flush partial mappings in error case

If some remap_pfn_range() calls succeeded before one failed, we still have buffer pages mapped into the userspace page tables when we drop the buffer reference with comedi_buf_map_put(bm). The userspace mappings are only cleaned up later in the mmap error path.

Fix it by explicitly flushing all mappings in our VMA on the error path.

See commit 79a61cc3fc04 ("mm: avoid leaving partial pfn mappings around in error case").

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxed9eccbe8970f6eedc1b978c157caf1251a896d4 < 57f048c2d205b85e34282a9b0b0ae177e84c2f44affected
LinuxLinuxed9eccbe8970f6eedc1b978c157caf1251a896d4 < b9322408d83accc8b96322bc7356593206288c56affected
LinuxLinuxed9eccbe8970f6eedc1b978c157caf1251a896d4 < 8797b7712de704dc231f9e821d8eb3b9aeb3a032affected
LinuxLinuxed9eccbe8970f6eedc1b978c157caf1251a896d4 < 16c507df509113c037cdc0ba642b9ab3389bd26caffected
LinuxLinuxed9eccbe8970f6eedc1b978c157caf1251a896d4 < 9b07fb464eb69a752406e78e62ab3a60bfa7b00daffected
LinuxLinuxed9eccbe8970f6eedc1b978c157caf1251a896d4 < c6963a06ce5c61d3238751ada04ee1569663a828affected
LinuxLinuxed9eccbe8970f6eedc1b978c157caf1251a896d4 < 297f14fbb81895f4ccdb0ad25d196786d6461e00affected
LinuxLinuxed9eccbe8970f6eedc1b978c157caf1251a896d4 < ce8f9fb651fac95dd41f69afe54d935420b945bdaffected
LinuxLinux2.6.29affected
LinuxLinux0 < 2.6.29unaffected
LinuxLinux5.4.287 <= 5.4.*unaffected
LinuxLinux5.10.231 <= 5.10.*unaffected
LinuxLinux5.15.174 <= 5.15.*unaffected
LinuxLinux6.1.120 <= 6.1.*unaffected
LinuxLinux6.6.64 <= 6.6.*unaffected
LinuxLinux6.11.11 <= 6.11.*unaffected
LinuxLinux6.12.2 <= 6.12.*unaffected
LinuxLinux6.13 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

References