Riskcovery

CVE-2024-46842

scsi: lpfc: Handle mailbox timeouts in lpfc_get_sfp_info

State
Published
Severity
7.8 High
Published
Sep 27, 2024
Updated
Oct 21, 2026
Reserved
Sep 11, 2024

Read the record on cve.org

Description

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

scsi: lpfc: Handle mailbox timeouts in lpfc_get_sfp_info

The MBX_TIMEOUT return code is not handled in lpfc_get_sfp_info and the routine unconditionally frees submitted mailbox commands regardless of return status. The issue is that for MBX_TIMEOUT cases, when firmware returns SFP information at a later time, that same mailbox memory region references previously freed memory in its cmpl routine.

Fix by adding checks for the MBX_TIMEOUT return code. During mailbox resource cleanup, check the mbox flag to make sure that the wait did not timeout. If the MBOX_WAKE flag is not set, then do not free the resources because it will be freed when firmware completes the mailbox at a later time in its cmpl routine.

Also, increase the timeout from 30 to 60 seconds to accommodate boot scripts requiring longer timeouts.

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 479b0917e4477f49df2e3be454aac3cfa5dec171 to before c6d8cce685d6088d795b29a0f47e6fd04548fd64Affected
  • 479b0917e4477f49df2e3be454aac3cfa5dec171 to before bba47fe3b038cca3d3ebd799665ce69d6d273b58Affected
  • 479b0917e4477f49df2e3be454aac3cfa5dec171 to before ede596b1434b57c0b3fd5c02b326efe5c54f6e48Affected
LinuxLinux
  • 6.2Affected
  • before 6.2Not affected
  • 6.6.160 through 6.6.*Not affected
  • 6.10.10 through 6.10.*Not affected
  • 6.11 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.