CVE-2026-89861

scsi: qla2xxx: Hold vport reference in qla24xx_report_id_acquisition()

State: Published
Severity: 8.1 High
Published: Sep 16, 2026
Updated: Oct 19, 2026
Reserved: Sep 11, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	8.1 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 to before d09ef32af1e05d79f29b460521a20bc4e6fd2ecfAffected 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 to before 4b7f0a95bfeb1d3673da4c29bbe9872a61bc1a69Affected 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 to before 267533b28ddf2c9223d30ad7e6960fa9e936428eAffected 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 to before f8d2eb510c063a8ca79a5dc766a4303d3925fe83Affected 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 to before f6b3bcc7cb2f4c37464958b9fd97dc7f185ea297Affected 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 to before 47272152a13d202d98496208f9bf382c1cf4d4fbAffected 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 to before d556f899964d184e6cb788f3fa9dcddcafe1ab2dAffected 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 to before 793cedee296fd819bfadc2a7ec4d52faf9c09a0aAffected
LinuxLinux	2.6.23Affected before 2.6.23Not affected 5.10.270 through 5.10.Not affected 5.15.221 through 5.15.Not affected 6.1.188 through 6.1.Not affected 6.6.157 through 6.6.Not affected 6.12.110 through 6.12.Not affected 6.18.51 through 6.18.Not affected 7.2.5 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 to before d09ef32af1e05d79f29b460521a20bc4e6fd2ecfAffected
2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 to before 4b7f0a95bfeb1d3673da4c29bbe9872a61bc1a69Affected
2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 to before 267533b28ddf2c9223d30ad7e6960fa9e936428eAffected
2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 to before f8d2eb510c063a8ca79a5dc766a4303d3925fe83Affected
2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 to before f6b3bcc7cb2f4c37464958b9fd97dc7f185ea297Affected
2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 to before 47272152a13d202d98496208f9bf382c1cf4d4fbAffected
2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 to before d556f899964d184e6cb788f3fa9dcddcafe1ab2dAffected
2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 to before 793cedee296fd819bfadc2a7ec4d52faf9c09a0aAffected

LinuxLinux

2.6.23Affected
before 2.6.23Not affected
5.10.270 through 5.10.*Not affected
5.15.221 through 5.15.*Not affected
6.1.188 through 6.1.*Not affected
6.6.157 through 6.6.*Not affected
6.12.110 through 6.12.*Not affected
6.18.51 through 6.18.*Not affected
7.2.5 through 7.2.*Not affected
7.3 and laterNot affected

References

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