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CVE-2026-99157unknown

scsi: bsg: Pass reply_len to bsg_setup_queue() to fit UFS ARPMB replies

Impact

In the Linux kernel, the following vulnerability has been resolved:

Source excerpt · Linux

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

Linux · Linux

Other versions: unaffected

Version / rangeSource status
6ff265fc5ef660499e0edc4641647e99eed3f519 to before 2effbe746452c108188f85a6951f2b0b65653840affected
6ff265fc5ef660499e0edc4641647e99eed3f519 to before 7a755f6d47b811d3abd93c1642ce5e63894540b8affected
6ff265fc5ef660499e0edc4641647e99eed3f519 to before ec6b083915e8146e147314a5f4f1285d07b57bfcaffected
Linux version evidence

Linux · Linux

Other versions: affected

Version / rangeSource status
6.3affected
0 to before 6.3unaffected
6.18.59 through 6.18.* (inclusive)unaffected
7.2.13 through 7.2.* (inclusive)unaffected
7.3 through * (inclusive)unaffected
Linux version evidence

Original source 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