vulnerability
Red Hat: CVE-2022-49994: kernel: bootmem: remove the vmemmap pages from kmemleak in put_page_bootmem
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:M/Au:S/C:C/I:C/A:C) | Jun 18, 2025 | Jul 9, 2025 | Jul 10, 2025 |
Description
In the Linux kernel, the following vulnerability has been resolved:
bootmem: remove the vmemmap pages from kmemleak in put_page_bootmem
The vmemmap pages is marked by kmemleak when allocated from memblock.
Remove it from kmemleak when freeing the page. Otherwise, when we reuse
the page, kmemleak may report such an error and then stop working.
kmemleak: Cannot insert 0xffff98fb6eab3d40 into the object search tree (overlaps existing)
kmemleak: Kernel memory leak detector disabled
kmemleak: Object 0xffff98fb6be00000 (size 335544320):
kmemleak: comm "swapper", pid 0, jiffies 4294892296
kmemleak: min_count = 0
kmemleak: count = 0
kmemleak: flags = 0x1
kmemleak: checksum = 0
kmemleak: backtrace:
Solution
References
2026 Global Threat Landscape Report
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