CVE-2026-64244
CVE CVE-2026-64244EUVD EUVD-2026-48653Published 2026-07-24T15:29:59.000Z
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux 6.6; patch: 0; 1a8c64e110435e44e71bcd50a75663174b575f22 <22dc0d042f02ce82aa61422ea5f232628bfd9e9c; 1a8c64e110435e44e71bcd50a75663174b575f22 <6c25bf4e44a2b6a14332f952bba0974521f5b72d; 1a8c64e110435e44e71bcd50a75663174b575f22 <a2b8d7827f48ee54a686cb80e4a1d0ff954ec42a; patch: 7.0.14; 1a8c64e110435e44e71bcd50a75663174b575f22 <059ac6252a63edf1cea79bf30bd860a8c264b62c; patch: 6.12.95; patch: 6.18.37; 1a8c64e110435e44e71bcd50a75663174b575f22 <bc3dd82a0ffd488bb902f4c69c3d28fd4088d973; patch: 7.2-rc1; patch: 7.1.2; patch: 6.6.144; 1a8c64e110435e44e71bcd50a75663174b575f22 <802e113cf120df7208e4c7e604950a85e87120a8
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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