CVE-2026-93242scsi: qla2xxx: Fix response queue over-consumption in __qla_consume_iocb()
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In 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().
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from fac2807946c10b9a509b9c348afd442fa823c5f7 before a136c311676fd1010b1bde3bcfd410caa2fa040f; from fac2807946c10b9a509b9c348afd442fa823c5f7 before d841707fafba5f80341b82e8c3a4c24fc5aa5132; from fac2807946c10b9a509b9c348afd442fa823c5f7 before 6e3f129538c32d0019437197735912308c161843; from fac2807946c10b9a509b9c348afd442fa823c5f7 before bd1534d4afab47f13dfc27fff6f59dd859a0ac3a; from fac2807946c10b9a509b9c348afd442fa823c5f7 before 31715d1e1cbf3a37ce3452635c5602f73fd7abd4; from fac2807946c10b9a509b9c348afd442fa823c5f7 before df86c27cf1ba9d66f737a1fa56479c6e7efafe4e; from fac2807946c10b9a509b9c348afd442fa823c5f7 before 3ba019bdd89d931499d9476456b5d9c7ab7fa753 | CNA record |
References
- https://git.kernel.org/stable/c/a136c311676fd1010b1bde3bcfd410caa2fa040f
- https://git.kernel.org/stable/c/d841707fafba5f80341b82e8c3a4c24fc5aa5132
- https://git.kernel.org/stable/c/6e3f129538c32d0019437197735912308c161843
- https://git.kernel.org/stable/c/bd1534d4afab47f13dfc27fff6f59dd859a0ac3a
- https://git.kernel.org/stable/c/31715d1e1cbf3a37ce3452635c5602f73fd7abd4
- https://git.kernel.org/stable/c/df86c27cf1ba9d66f737a1fa56479c6e7efafe4e
- https://git.kernel.org/stable/c/3ba019bdd89d931499d9476456b5d9c7ab7fa753
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.