{"id":"CVE-2026-97530","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Fix soft lockup polling continuation IOCB signature\n\nqla27xx_copy_multiple_pkt() and qla27xx_copy_fpin_pkt() poll\nrsp_q->ring_ptr->signature for RESPONSE…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Fix soft lockup polling continuation IOCB signature\n\nqla27xx_copy_multiple_pkt() and qla27xx_copy_fpin_pkt() poll\nrsp_q->ring_ptr->signature for RESPONSE…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-835"],"vendor":"Linux","product":"Linux","affected":["Linux >= 9f2475fe7406b8ef5f97099c4980021344872d9f < 3e58eb888ebf265af937f636d05997c60d2f197c","Linux >= 9f2475fe7406b8ef5f97099c4980021344872d9f < 6e6c2ba9022eb8f9b062c81bdc6fd24c7b4c4c16","Linux >= 9f2475fe7406b8ef5f97099c4980021344872d9f < 6aa722fca9d2aa1f64094101587f8f4a2f83f6aa","Linux >= 9f2475fe7406b8ef5f97099c4980021344872d9f < d7e3fa7d06bf7fcaac186d3c4d635caac166d36c","Linux 5.9"],"published":"2026-09-25","updated":"2026-10-03","sourceUpdated":"2026-10-03T11:18:01.837","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-97530","references":[{"url":"https://git.kernel.org/stable/c/3e58eb888ebf265af937f636d05997c60d2f197c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6aa722fca9d2aa1f64094101587f8f4a2f83f6aa","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6e6c2ba9022eb8f9b062c81bdc6fd24c7b4c4c16","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d7e3fa7d06bf7fcaac186d3c4d635caac166d36c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97530.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-97530"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2541082"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-97530"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97530"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97530.mbox"},{"url":"https://git.kernel.org/stable/c/428e244dd4066abd40ca1ec525b7aab9a9db8296"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00206,"epssPercentile":0.10589,"cvssSource":"vendor","ingestedAt":"2026-09-25T11:06:38.924Z","slug":"CVE-2026-97530","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Fix soft lockup polling continuation IOCB signature\n\nqla27xx_copy_multiple_pkt() and qla27xx_copy_fpin_pkt() poll\nrsp_q->ring_ptr->signature for RESPONSE_PROCESSED (0xDEADDEAD) to decide\nwhether the next continuation IOCB has arrived, spinning on cpu_relax()\nwithout advancing the ring or decrementing the entry count while it has\nnot. response_t::signature lives at byte offset 60, but a continuation\nIOCB (sts_cont_entry_t / struct sts_cont_entry_ext) carries raw FC frame\npayload at that offset (data[56..59]). A received frame whose payload\nbytes happen to equal 0xDEADDEAD is therefore misread as \"not yet\narrived\", and the loop spins forever in interrupt/DPC context, causing a\nCPU soft lockup.\n\nThe poll is also unnecessary: callers of qla27xx_copy_multiple_pkt()\n(PT_LS4_UNSOL and the NVMe purls path) already gate on\nqla_chk_cont_iocb_avail(), which guarantees all entry_count IOCBs are\npresent before copying begins. The sibling helper\n__qla_copy_purex_to_buffer() already drops the signature poll and relies\non the entry_type == STATUS_CONT_TYPE guard instead.\n\nRemove the signature busy-wait from both helpers, keeping the entry_type\nguard, and gate the FPIN path with qla_chk_cont_iocb_avail() so it defers\nand re-processes on the next interrupt once all continuation IOCBs have\narrived, mirroring the ELS_AUTH_ELS and PT_LS4_UNSOL arms. With this the\nsignature field is never read on a continuation IOCB, eliminating the\npayload-aliasing lockup.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, … · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97530.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":212511,"id":"CVE-2026-97530","ts":1790668195256,"field":"cvss","old":null,"new":"5.5"},{"seq":212510,"id":"CVE-2026-97530","ts":1790668195256,"field":"severity","old":"none","new":"medium"}]}