Vulnerability Database

296,202

Total vulnerabilities in the database

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().

  • Published: Apr 1, 2025
  • Updated: May 4, 2025
  • CVE: CVE-2025-21980
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 5.5
  • AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWEs:

Software From Fixed in
linux / linux_kernel 6.14-rc1 6.14-rc1.x
linux / linux_kernel 6.14-rc2 6.14-rc2.x
linux / linux_kernel 6.14-rc3 6.14-rc3.x
linux / linux_kernel 6.14-rc4 6.14-rc4.x
linux / linux_kernel 6.14-rc5 6.14-rc5.x
linux / linux_kernel 6.14-rc6 6.14-rc6.x
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