Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1a8c64e110435e44e71bcd50a75663174b575f22 before 802e113cf120df7208e4c7e604950a85e87120a8; affected 1a8c64e110435e44e71bcd50a75663174b575f22 before 22dc0d042f02ce82aa61422ea5f232628bfd9e9c; affected 1a8c64e110435e44e71bcd50a75663174b575f22 before 6c25bf4e44a2b6a14332f952bba0974521f5b72d; affected 1a8c64e110435e44e71bcd50a75663174b575f22 before bc3dd82a0ffd488bb902f4c69c3d28fd4088d973; affected 1a8c64e110435e44e71bcd50a75663174b575f22 before 059ac6252a63edf1cea79bf30bd860a8c264b62c; affected 1a8c64e110435e44e71bcd50a75663174b575f22 before a2b8d7827f48ee54a686cb80e4a1d0ff954ec42a |
| Linux / Linux | affected 6.6; unaffected 0 before 6.6; unaffected 6.6.144 through 6.6.*; unaffected 6.12.95 through 6.12.*; unaffected 6.18.37 through 6.18.*; unaffected 7.0.14 through 7.0.*; unaffected 7.1.2 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
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