PT-2025-14361 · Linux+7 · Linux Kernel+7
Published
2025-03-05
·
Updated
2026-05-22
·
CVE-2025-21980
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A potential NULL pointer dereference in the GRED scheduler has been resolved. The issue occurs when
kzalloc in gred init returns a NULL pointer, leading to a call to gred destroy, which in turn calls gred offload. In gred offload, memset could receive a NULL pointer as input, potentially causing a kernel crash. This happens because table->opt is NULL in gred init(), making it unnecessary to call ->ndo setup tc() in gred offload().Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
DoS
NULL Pointer Dereference
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Astra Linux
Debian
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu