GHSA-597J-VWW4-HXXR
Vulnerability from github – Published: 2026-09-16 12:30 – Updated: 2026-09-16 12:30In the Linux kernel, the following vulnerability has been resolved:
scsi: qla2xxx: Zero mailbox struct in qla2x00_get_firmware_state()
The mbx_cmd_t is allocated on the stack but left uninitialized. qla2x00_mailbox_command() has several early-return paths (PCI permanent failure, device failed, EEH busy, ISP abort pending, mailbox access timeout, purge mbox) that return without writing the input mailbox registers back into mcp->mb[]. qla2x00_get_firmware_state() then unconditionally copies mcp->mb[1..6] (and mb[12]) into the caller's states[] array regardless of the return value.
On such a failure the copied values are uninitialized kernel stack memory, which is then exposed to userspace via the fw_state and mpi_fw_state sysfs handlers. Zero the mailbox struct so a failed query yields deterministic zeroed state instead of leaking stack contents.
{
"affected": [],
"aliases": [
"CVE-2026-89852"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-16T11:16:52Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Zero mailbox struct in qla2x00_get_firmware_state()\n\nThe mbx_cmd_t is allocated on the stack but left uninitialized.\nqla2x00_mailbox_command() has several early-return paths (PCI permanent\nfailure, device failed, EEH busy, ISP abort pending, mailbox access\ntimeout, purge mbox) that return without writing the input mailbox\nregisters back into mcp-\u003emb[]. qla2x00_get_firmware_state() then\nunconditionally copies mcp-\u003emb[1..6] (and mb[12]) into the caller\u0027s\nstates[] array regardless of the return value.\n\nOn such a failure the copied values are uninitialized kernel stack\nmemory, which is then exposed to userspace via the fw_state and\nmpi_fw_state sysfs handlers. Zero the mailbox struct so a failed query\nyields deterministic zeroed state instead of leaking stack contents.",
"id": "GHSA-597j-vww4-hxxr",
"modified": "2026-09-16T12:30:39Z",
"published": "2026-09-16T12:30:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89852"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/13d645a2cdb224d27205368f3e3c68bb160daf97"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1f49e861c18caf8eef7f0ad9a2c5034f88a6ba79"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2f847f06bb223aa895eea91fc9e5e2d6314038eb"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9efaa782845b4d5fb3e01242be0d06ebc7428d8f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9f31de4d07e4cde91dfc24522993a5fbb4d67083"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e6cfb1ee18336aab41a0941d6d3ea5009aaafc05"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f29695b1138ae2539c5cd6cdaba9b1b072aaa81a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f8fc5cc6b3284506c6ab83c822c48133377668bb"
}
],
"schema_version": "1.4.0",
"severity": []
}
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