CVE-2026-89861
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.
How to fix
- Linux Linuxd09ef32af1e05d79f29b460521a20bc4e6fd2ecf, 4b7f0a95bfeb1d3673da4c29bbe9872a61bc1a69, 267533b28ddf2c9223d30ad7e6960fa9e936428e, f8d2eb510c063a8ca79a5dc766a4303d3925fe83, f6b3bcc7cb2f4c37464958b9fd97dc7f185ea297, 47272152a13d202d98496208f9bf382c1cf4d4fb, d556f899964d184e6cb788f3fa9dcddcafe1ab2d, 793cedee296fd819bfadc2a7ec4d52faf9c09a0a or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 ≤ v < d09ef32af1e05d79f29b460521a20bc4e6fd2ecf, 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 ≤ v < 4b7f0a95bfeb1d3673da4c29bbe9872a61bc1a69, 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 ≤ v < 267533b28ddf2c9223d30ad7e6960fa9e936428e, 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 ≤ v < f8d2eb510c063a8ca79a5dc766a4303d3925fe83, 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 ≤ v < f6b3bcc7cb2f4c37464958b9fd97dc7f185ea297, 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 ≤ v < 47272152a13d202d98496208f9bf382c1cf4d4fb, 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 ≤ v < d556f899964d184e6cb788f3fa9dcddcafe1ab2d, 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 ≤ v < 793cedee296fd819bfadc2a7ec4d52faf9c09a0a, 2.6.23 | d09ef32af1e05d79f29b460521a20bc4e6fd2ecf, 4b7f0a95bfeb1d3673da4c29bbe9872a61bc1a69, 267533b28ddf2c9223d30ad7e6960fa9e936428e, f8d2eb510c063a8ca79a5dc766a4303d3925fe83, f6b3bcc7cb2f4c37464958b9fd97dc7f185ea297, 47272152a13d202d98496208f9bf382c1cf4d4fb, d556f899964d184e6cb788f3fa9dcddcafe1ab2d, 793cedee296fd819bfadc2a7ec4d52faf9c09a0a |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.