Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 before d09ef32af1e05d79f29b460521a20bc4e6fd2ecf; affected 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 before 4b7f0a95bfeb1d3673da4c29bbe9872a61bc1a69; affected 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 before 267533b28ddf2c9223d30ad7e6960fa9e936428e; affected 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 before f8d2eb510c063a8ca79a5dc766a4303d3925fe83; affected 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 before f6b3bcc7cb2f4c37464958b9fd97dc7f185ea297; affected 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 before 47272152a13d202d98496208f9bf382c1cf4d4fb; affected 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 before d556f899964d184e6cb788f3fa9dcddcafe1ab2d; affected 2c3dfe3f6ad8daff5acdb01713e4f2b116e78136 before 793cedee296fd819bfadc2a7ec4d52faf9c09a0a |
| Linux / Linux | affected 2.6.23; unaffected 0 before 2.6.23; unaffected 5.10.270 through 5.10.*; unaffected 5.15.221 through 5.15.*; unaffected 6.1.188 through 6.1.*; unaffected 6.6.157 through 6.6.*; unaffected 6.12.110 through 6.12.*; unaffected 6.18.51 through 6.18.*; unaffected 7.2.5 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/d09ef32af1e05d79f29b460521a20bc4e6fd2ecf
- https://git.kernel.org/stable/c/4b7f0a95bfeb1d3673da4c29bbe9872a61bc1a69
- https://git.kernel.org/stable/c/267533b28ddf2c9223d30ad7e6960fa9e936428e
- https://git.kernel.org/stable/c/f8d2eb510c063a8ca79a5dc766a4303d3925fe83
- https://git.kernel.org/stable/c/f6b3bcc7cb2f4c37464958b9fd97dc7f185ea297
- https://git.kernel.org/stable/c/47272152a13d202d98496208f9bf382c1cf4d4fb
- https://git.kernel.org/stable/c/d556f899964d184e6cb788f3fa9dcddcafe1ab2d
- https://git.kernel.org/stable/c/793cedee296fd819bfadc2a7ec4d52faf9c09a0a