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CVE-2026-89861

scsi: qla2xxx: Hold vport reference in qla24xx_report_id_acquisition()

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, and 2 more
None on Exploit-DB, Metasploit or GitHub

Summary

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Hold vport reference in qla24xx_report_id_acquisition() In the format 1 path, the virtual port is located on ha->vp_list while holding vport_slock, but the lock is dropped before vp is used: qla_update_host_map() is called and VP_IDX_ACQUIRED/REGISTER_FC4_NEEDED/ REGISTER_FDMI_NEEDED are set on vp. No reference is taken across that window, so a concurrent qla24xx_deallocate_vp_id() can tear the vport down and free it, leading to a use-after-free. Take a vport reference (vref_count) under vport_slock when the matching vp is found, and drop it after the last use of vp. qla24xx_deallocate_vp_id() waits for vref_count to reach zero before unlinking and freeing the vport, so the pointer stays valid. This matches the reference idiom already used by the other ha->vp_list traversals.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 · fixed in d09ef32af1e05d79f29b460521a20bc4e6fd2ecf; From 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 · fixed in 4b7f0a95bfeb1d3673da4c29bbe9872a61bc1a69; From 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 · fixed in 267533b28ddf2c9223d30ad7e6960fa9e936428e; From 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 · fixed in f8d2eb510c063a8ca79a5dc766a4303d3925fe83; From 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 · fixed in f6b3bcc7cb2f4c37464958b9fd97dc7f185ea297; From 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 · fixed in 47272152a13d202d98496208f9bf382c1cf4d4fb; From 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 · fixed in d556f899964d184e6cb788f3fa9dcddcafe1ab2d; From 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 · fixed in 793cedee296fd819bfadc2a7ec4d52faf9c09a0a

  • Linux Linux

    2.6.23

  • KernelLinux

    From 2.6.23 · fixed in 5.10.270; From 5.11.0 · fixed in 5.15.221; From 5.16.0 · fixed in 6.1.188; From 6.2.0 · fixed in 6.6.157; From 6.7.0 · fixed in 6.12.110; From 6.13.0 · fixed in 6.18.51; From 6.19.0 · fixed in 7.2.5

References 8

git.kernel.org