CVE-2026-93242

Summary

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().

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxfac2807946c10b9a509b9c348afd442fa823c5f7 < a136c311676fd1010b1bde3bcfd410caa2fa040faffected
LinuxLinuxfac2807946c10b9a509b9c348afd442fa823c5f7 < d841707fafba5f80341b82e8c3a4c24fc5aa5132affected
LinuxLinuxfac2807946c10b9a509b9c348afd442fa823c5f7 < 6e3f129538c32d0019437197735912308c161843affected
LinuxLinuxfac2807946c10b9a509b9c348afd442fa823c5f7 < bd1534d4afab47f13dfc27fff6f59dd859a0ac3aaffected
LinuxLinuxfac2807946c10b9a509b9c348afd442fa823c5f7 < 31715d1e1cbf3a37ce3452635c5602f73fd7abd4affected
LinuxLinuxfac2807946c10b9a509b9c348afd442fa823c5f7 < df86c27cf1ba9d66f737a1fa56479c6e7efafe4eaffected
LinuxLinuxfac2807946c10b9a509b9c348afd442fa823c5f7 < 3ba019bdd89d931499d9476456b5d9c7ab7fa753affected
LinuxLinux5.15affected
LinuxLinux0 < 5.15unaffected
LinuxLinux5.15.221 <= 5.15.*unaffected
LinuxLinux6.1.188 <= 6.1.*unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.51 <= 6.18.*unaffected
LinuxLinux7.2.5 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References