{"api_version":"1","generated_at":"2026-10-02T03:44:39+00:00","cve":"CVE-2026-97530","urls":{"html":"https://cve.report/CVE-2026-97530","api":"https://cve.report/api/cve/CVE-2026-97530.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-97530","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-97530"},"summary":{"title":"scsi: qla2xxx: Fix soft lockup polling continuation IOCB signature","description":"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_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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-25 11:17:03","updated_at":"2026-09-25 11:17:03"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/6aa722fca9d2aa1f64094101587f8f4a2f83f6aa","name":"https://git.kernel.org/stable/c/6aa722fca9d2aa1f64094101587f8f4a2f83f6aa","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6e6c2ba9022eb8f9b062c81bdc6fd24c7b4c4c16","name":"https://git.kernel.org/stable/c/6e6c2ba9022eb8f9b062c81bdc6fd24c7b4c4c16","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d7e3fa7d06bf7fcaac186d3c4d635caac166d36c","name":"https://git.kernel.org/stable/c/d7e3fa7d06bf7fcaac186d3c4d635caac166d36c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-97530","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97530","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9f2475fe7406b8ef5f97099c4980021344872d9f 6e6c2ba9022eb8f9b062c81bdc6fd24c7b4c4c16 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9f2475fe7406b8ef5f97099c4980021344872d9f 6aa722fca9d2aa1f64094101587f8f4a2f83f6aa git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9f2475fe7406b8ef5f97099c4980021344872d9f d7e3fa7d06bf7fcaac186d3c4d635caac166d36c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.9","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.9 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.53 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.7 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"97530","cve":"CVE-2026-97530","epss":"0.001980000","percentile":"0.085900000","score_date":"2026-09-27","updated_at":"2026-09-28 00:02:24"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/scsi/qla2xxx/qla_isr.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"6e6c2ba9022eb8f9b062c81bdc6fd24c7b4c4c16","status":"affected","version":"9f2475fe7406b8ef5f97099c4980021344872d9f","versionType":"git"},{"lessThan":"6aa722fca9d2aa1f64094101587f8f4a2f83f6aa","status":"affected","version":"9f2475fe7406b8ef5f97099c4980021344872d9f","versionType":"git"},{"lessThan":"d7e3fa7d06bf7fcaac186d3c4d635caac166d36c","status":"affected","version":"9f2475fe7406b8ef5f97099c4980021344872d9f","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/scsi/qla2xxx/qla_isr.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.9"},{"lessThan":"5.9","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.53","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.53","versionStartIncluding":"5.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.7","versionStartIncluding":"5.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"5.9","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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_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."}],"providerMetadata":{"dateUpdated":"2026-09-25T10:21:31.326Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/6e6c2ba9022eb8f9b062c81bdc6fd24c7b4c4c16"},{"url":"https://git.kernel.org/stable/c/6aa722fca9d2aa1f64094101587f8f4a2f83f6aa"},{"url":"https://git.kernel.org/stable/c/d7e3fa7d06bf7fcaac186d3c4d635caac166d36c"}],"title":"scsi: qla2xxx: Fix soft lockup polling continuation IOCB signature","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-97530","datePublished":"2026-09-25T10:21:31.326Z","dateReserved":"2026-09-24T16:01:01.153Z","dateUpdated":"2026-09-25T10:21:31.326Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-25 11:17:03","lastModifiedDate":"2026-09-25 11:17:03","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"97530","Ordinal":"1","Title":"scsi: qla2xxx: Fix soft lockup polling continuation IOCB signatu","CVE":"CVE-2026-97530","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"97530","Ordinal":"1","NoteData":"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_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.","Type":"Description","Title":"scsi: qla2xxx: Fix soft lockup polling continuation IOCB signatu"}]}}}