Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: scsi: bsg: Pass reply_len to bsg_setup_queue() to fit UFS ARPMB replies bsg-lib allocates a 96-byte (SCSI_SENSE_BUFFERSIZE) reply buffer per job, but struct ufs_rpmb_reply is 104 bytes: a 40-byte struct ufs_bsg_reply followed by a 64-byte EHS. When an Advanced RPMB command returns an EHS, ufshcd_advanced_rpmb_req_handler() copies it right after the 40-byte header and writes 8 bytes past the end of the buffer. Let each BSG transport pass its reply buffer size to bsg_setup_queue() and have ufs_bsg request sizeof(struct ufs_rpmb_reply), so the full reply reaches user space. Other transports keep SCSI_SENSE_BUFFERSIZE.
References
- https://git.kernel.org/stable/c/2effbe746452c108188f85a6951f2b0b65653840
- https://git.kernel.org/stable/c/7a755f6d47b811d3abd93c1642ce5e63894540b8
- https://git.kernel.org/stable/c/913a1876fbe9a168030013b9e6cb2746fe41fff4
- https://git.kernel.org/stable/c/bfb0582708b3432919a8baaa3a65de5fdb1490ea
- https://git.kernel.org/stable/c/ec6b083915e8146e147314a5f4f1285d07b57bfc
FAQ
What is CVE-2026-99157?
CVE-2026-99157 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: scsi: bsg: Pass reply_len to bsg_setup_queue() to fit UFS ARPMB replies bsg-lib allocates a 96-byte (SCSI_SENSE_BUFFERSIZE) reply ...
How severe is CVE-2026-99157?
CVSS scoring is not yet available for CVE-2026-99157. Check NVD for updates.
Is there a patch for CVE-2026-99157?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.