CVE-2025-21980
- Source
- https://cve.org/CVERecord?id=CVE-2025-21980
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-21980.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2025-21980
- Downstream
- Related
- Published
- 2025-04-01T15:47:09.232Z
- Modified
- 2026-05-28T03:55:31.863843358Z
- 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
- sched: address a potential NULL pointer dereference in the GRED scheduler.
- 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().
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21980.json" }- References
-
- https://git.kernel.org/stable/c/0f0a152957d64ce45b4c27c687e7d087e8f45079
- https://git.kernel.org/stable/c/115ef44a98220fddfab37a39a19370497cd718b9
- https://git.kernel.org/stable/c/5f996b4f80c2cef1f9c77275055e7fcba44c9199
- https://git.kernel.org/stable/c/68896dd50180b38ea552e49a6a00b685321e5769
- https://git.kernel.org/stable/c/d02c9acd68950a444acda18d514e2b41f846cb7f
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21980.json
- https://nvd.nist.gov/vuln/detail/CVE-2025-21980
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedf25c0515c521375154c62c72447869f40218c861Fixedd02c9acd68950a444acda18d514e2b41f846cb7fFixed0f0a152957d64ce45b4c27c687e7d087e8f45079Fixed68896dd50180b38ea552e49a6a00b685321e5769Fixed5f996b4f80c2cef1f9c77275055e7fcba44c9199Fixed115ef44a98220fddfab37a39a19370497cd718b9