CVE-2025-21980
In the Linux kernel, the following vulnerability has been resolved:
sched: address a potential NULL pointer dereference in the GRED scheduler.
If kzalloc in gred_init returns a NULL pointer, the code follows the
error handling path, invoking gred_destroy. This, in turn, calls
gred_offload, where memset could receive a NULL pointer as input,
potentially leading to a kernel crash.
When table->opt is NULL in gred_init(), gred_change_table_def()
is not called yet, so it is not necessary to call ->ndo_setup_tc()
in gred_offload().
https://nvd.nist.gov/vuln/detail/CVE-2025-21980
Categories
No category defined
References
CPE
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REMEDIATION
EXPLOITS
Exploit-db.com
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POC Github
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Other Nist (github, ...)
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CAPEC
Common Attack Pattern Enumerations and Classifications
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