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CVE-2021-22555· linux / kernel· CWE-787

Linux Kernel Heap Out-of-Bounds Write Vulnerability

Exploited in the wild. Listed by CISA on 2025-10-06; known to be used by ransomware.

78.7%likelihood of exploitation, next 30 days
100%of all CVEs are less likely
Nonecheck to confirm it

Linux Kernel contains a heap out-of-bounds write vulnerability that could allow an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space.

No ready check is stored for this CVE. Confirm it by hand from the references.

References

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