CVEvulnerability

CVE-2025-21980

5.5 MEDIUM Published 2025-04-01 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2025-04-01
Last modified
2026-06-17
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-476

Description

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().

Affected configurations

• linux linux kernel (>= 5.16 < 6.1.132) • linux linux kernel (>= 6.2 < 6.6.84) • linux linux kernel (>= 6.7 < 6.12.20) • linux linux kernel (>= 6.13 < 6.13.8) • linux linux kernel 6.14

Related

Weakness · CWE (1)

  • CWE-476 NULL Pointer Dereference weakness

References