AZL-59901
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-59901.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-59901
- Upstream
- Published
- 2025-04-01T16:15:29Z
- Modified
- 2026-04-01T05:19:33.659131Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- CVE-2025-21980 affecting package kernel for versions less than 6.6.85.1-2
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
sched: address a potential NULL pointer dereference in the GRED scheduler.
If kzalloc in gredinit returns a NULL pointer, the code follows the error handling path, invoking greddestroy. 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 gredinit(), gredchangetabledef() is not called yet, so it is not necessary to call ->ndosetuptc() in gred_offload().
- References