GHSA-W8H6-PXW4-JQXH
Vulnerability from github – Published: 2026-09-24 18:31 – Updated: 2026-09-24 18:31In the Linux kernel, the following vulnerability has been resolved:
scsi: qla2xxx: Fix response queue over-consumption in __qla_consume_iocb()
qla24xx_process_response_queue() advances ring_ptr past the head IOCB before dispatching, so by the time __qla_consume_iocb() runs, ring_ptr already points at the first continuation IOCB. The function however looped purex->entry_count times starting at ring_ptr. As entry_count includes the head, this consumed one entry too many: it stamped RESPONSE_PROCESSED on the next, unrelated IOCB and advanced the ring past it, silently dropping a legitimate firmware response. The head IOCB's signature was also never marked.
Mark the head processed and account for it, then consume only the entry_count - 1 continuation IOCBs, matching __qla_copy_purex_to_buffer().
{
"affected": [],
"aliases": [
"CVE-2026-93242"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-24T16:17:20Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Fix response queue over-consumption in __qla_consume_iocb()\n\nqla24xx_process_response_queue() advances ring_ptr past the head IOCB\nbefore dispatching, so by the time __qla_consume_iocb() runs, ring_ptr\nalready points at the first continuation IOCB. The function however\nlooped purex-\u003eentry_count times starting at ring_ptr. As entry_count\nincludes the head, this consumed one entry too many: it stamped\nRESPONSE_PROCESSED on the next, unrelated IOCB and advanced the ring\npast it, silently dropping a legitimate firmware response. The head\nIOCB\u0027s signature was also never marked.\n\nMark the head processed and account for it, then consume only the\nentry_count - 1 continuation IOCBs, matching __qla_copy_purex_to_buffer().",
"id": "GHSA-w8h6-pxw4-jqxh",
"modified": "2026-09-24T18:31:23Z",
"published": "2026-09-24T18:31:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93242"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/31715d1e1cbf3a37ce3452635c5602f73fd7abd4"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3ba019bdd89d931499d9476456b5d9c7ab7fa753"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6e3f129538c32d0019437197735912308c161843"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a136c311676fd1010b1bde3bcfd410caa2fa040f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/bd1534d4afab47f13dfc27fff6f59dd859a0ac3a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d841707fafba5f80341b82e8c3a4c24fc5aa5132"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/df86c27cf1ba9d66f737a1fa56479c6e7efafe4e"
}
],
"schema_version": "1.4.0",
"severity": []
}
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|---|
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