Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Clear buf on error in __bpf_get_task_stack Both bpf_get_task_stack and bpf_get_task_stack_sleepable helpers that use __bpf_get_task_stack have buf defined as ARG_PTR_TO_UNINIT_MEM argument and we should initialize the buf on every return path. Adding missing buf memset for __bpf_get_task_stack fail paths. This provides deterministic buffer contents, which is useful when the buffer is used directly as a map key.
References
- https://git.kernel.org/stable/c/f523359c4789bb0396d2d642464a6e2fd4f2299d
- https://git.kernel.org/stable/c/f5d242825ca417bb6afe35fde6e8880f97ca43fb
FAQ
What is CVE-2026-90300?
CVE-2026-90300 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: bpf: Clear buf on error in __bpf_get_task_stack Both bpf_get_task_stack and bpf_get_task_stack_sleepable helpers that use __bpf_ge...
How severe is CVE-2026-90300?
CVSS scoring is not yet available for CVE-2026-90300. Check NVD for updates.
Is there a patch for CVE-2026-90300?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.