Description
In the Linux kernel, the following vulnerability has been resolved: drivers/base/memory: set mem->altmap after successful device registration If __add_memory_block() fails at xa_store() (under memory pressure for example), device_unregister() is called, which eventually triggers memory_block_release() with mem->altmap still set, causing a WARN_ON(mem->altmap). This was triggered by modifying virtio-mem driver. Fix this by delaying the assignment of mem->altmap until after __add_memory_block() has succeeded.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
1a8c64e110435e44e71bcd50a75663174b575f22 to < 802e113cf120df7208e4c7e604950a85e87120a8affected1a8c64e110435e44e71bcd50a75663174b575f22 to < 22dc0d042f02ce82aa61422ea5f232628bfd9e9caffected1a8c64e110435e44e71bcd50a75663174b575f22 to < 6c25bf4e44a2b6a14332f952bba0974521f5b72daffected1a8c64e110435e44e71bcd50a75663174b575f22 to < bc3dd82a0ffd488bb902f4c69c3d28fd4088d973affected1a8c64e110435e44e71bcd50a75663174b575f22 to < 059ac6252a63edf1cea79bf30bd860a8c264b62caffected1a8c64e110435e44e71bcd50a75663174b575f22 to < a2b8d7827f48ee54a686cb80e4a1d0ff954ec42aaffected
Linux Linux
Default version status: affected
6.6affected0 to < 6.6unaffected6.6.144 to ≤ 6.6.*unaffected6.12.95 to ≤ 6.12.*unaffected6.18.37 to ≤ 6.18.*unaffected7.0.14 to ≤ 7.0.*unaffected7.1.2 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/802e113cf120df7208e4c7e604950a85e87120a8 ↗
- https://git.kernel.org/stable/c/22dc0d042f02ce82aa61422ea5f232628bfd9e9c ↗
- https://git.kernel.org/stable/c/6c25bf4e44a2b6a14332f952bba0974521f5b72d ↗
- https://git.kernel.org/stable/c/bc3dd82a0ffd488bb902f4c69c3d28fd4088d973 ↗
- https://git.kernel.org/stable/c/059ac6252a63edf1cea79bf30bd860a8c264b62c ↗
- https://git.kernel.org/stable/c/a2b8d7827f48ee54a686cb80e4a1d0ff954ec42a ↗