CVE-2026-90191
- Source
- https://cve.org/CVERecord?id=CVE-2026-90191
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90191.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-90191
- Downstream
- Published
- 2026-09-17T16:07:12Z
- Modified
- 2026-09-19T03:47:25Z
- Severity
-
- 8.4 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- mailbox: riscv-sbi-mpxy: validate RPMI notification lengths
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
mailbox: riscv-sbi-mpxy: validate RPMI notification lengths
The SBI return value controls how many bytes are copied from shared memory into the RPMI notification buffer. It is not validated against the negotiated shared-memory size before that copy. The event walker also uses a reversed loop condition and can inspect a short event record.
Validate the complete notification length before copying it, iterate only while a full event header remains, and stop when a declared event payload extends beyond the copied notification data.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90191.json" }- References
-
- https://git.kernel.org/stable/c/11d5af151bcbe78f5a579e0faecd3be9cea0399a
- https://git.kernel.org/stable/c/c7bc5e7677bcda7a446d63b989cfaa3fe91d6b76
- https://git.kernel.org/stable/c/cbc24bce70dfd91c7b2f53b4fa896e9a4b6d6a6b
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90191.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-90191
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git