scsi: qla2xxx: Fix use-after-free of qpair work on queue teardown
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix use-after-free of qpair work on queue teardown The response queue MSI-X handler qla2xxx_msix_rsp_q() schedules qla_do_work() via queue_work(ha->wq, &qpair->q_work). qla_do_work() dereferences the qpair (vha, rsp) and takes qpair->qp_lock. During teardown, qla2xxx_delete_qpair() deletes the response queue, which calls free_irq() in qla25xx_free_rsp_que(), and then frees the queue and the qpair. free_irq() waits for running hardirq handlers but does not cancel work already placed on ha->wq. A still-pending q_work then runs qla_do_work() against the freed qpair and response queue, causing a use-after-free. This is especially likely during full adapter teardown, where destroy_workqueue(ha->wq) forces pending work to run after the queue pairs have been freed. Flush the work item with cancel_work_sync() in qla25xx_free_rsp_que() after free_irq() has released the interrupt (so no new work can be queued) and before the response queue and qpair memory are freed (so the flushed handler still sees valid memory). Guard on rsp->qpair and ha->wq to match the INIT_WORK() condition and avoid operating on an uninitialized work_struct.
CVE-2026-97536
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-97536
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "68ca949cdb04b4dc71451a999148fbc5f187a220",
"lessThan": "9bd063c082ef0475dfc28c46f607aa3e90fe13d7",
"versionType": "git"
},
{
"status": "affected",
"version": "68ca949cdb04b4dc71451a999148fbc5f187a220",
"lessThan": "dd6c14db0dbb7774278e62c8114902f953540932",
"versionType": "git"
},
{
"status": "affected",
"version": "68ca949cdb04b4dc71451a999148fbc5f187a220",
"lessThan": "1710a69fd74d0b4bdfcc57c3309b1c4057f70d85",
"versionType": "git"
},
{
"status": "affected",
"version": "68ca949cdb04b4dc71451a999148fbc5f187a220",
"lessThan": "f1f4d1cb93eeeb250eac9405121933e268eefbd3",
"versionType": "git"
},
{
"status": "affected",
"version": "68ca949cdb04b4dc71451a999148fbc5f187a220",
"lessThan": "19788a55cab61d78e33e0914a5a31d27843e8a4a",
"versionType": "git"
}
],
"programFiles": [
"drivers/scsi/qla2xxx/qla_mid.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.31"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.31",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.7",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/scsi/qla2xxx/qla_mid.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-97536
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #48780 · Revision 1
- Added to Heist Feed
- Publisher date