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CVE-2026-97530: Linux

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CVSS

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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Време до експлоатация

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix soft lockup polling continuation IOCB signature qla27xx_copy_multiple_pkt() and qla27xx_copy_fpin_pkt() poll rsp_q->ring_ptr->signature for RESPONSE_PROCESSED (0xDEADDEAD) to decide whether the next continuation IOCB has arrived, spinning on cpu_relax() without advancing the ring or decrementing the entry count while it has not. response_t::signature lives at byte offset 60, but a continuation IOCB (sts_cont_entry_t / struct sts_cont_entry_ext) carries raw FC frame payload at that offset (data[56..59]). A received frame whose payload bytes happen to equal 0xDEADDEAD is therefore misread as "not yet arrived", and the loop spins forever in interrupt/DPC context, causing a CPU soft lockup. The poll is also unnecessary: callers of qla27xx_copy_multiple_pkt() (PT_LS4_UNSOL and the NVMe purls path) already gate on qla_chk_cont_iocb_avail(), which guarantees all entry_count IOCBs are present before copying begins. The sibling helper __qla_copy_purex_to_buffer() already drops the signature poll and relies on the entry_type == STATUS_CONT_TYPE guard instead. Remove the signature busy-wait from both helpers, keeping the entry_type guard, and gate the FPIN path with qla_chk_cont_iocb_avail() so it defers and re-processes on the next interrupt once all continuation IOCBs have arrived, mirroring the ELS_AUTH_ELS and PT_LS4_UNSOL arms. With this the signature field is never read on a continuation IOCB, eliminating the payload-aliasing lockup.

    Засегнати продукти

    • Linux Linux: 9f2475fe7406b8ef5f97099c4980021344872d9f преди bded2de273c5b0e50e3e23de937260436cd67df2; 9f2475fe7406b8ef5f97099c4980021344872d9f преди 70df7f03499046da0d28a58ec8b237ed5dfbd0a7; 9f2475fe7406b8ef5f97099c4980021344872d9f преди 428e244dd4066abd40ca1ec525b7aab9a9db8296; 9f2475fe7406b8ef5f97099c4980021344872d9f преди 3e58eb888ebf265af937f636d05997c60d2f197c; 9f2475fe7406b8ef5f97099c4980021344872d9f преди 6e6c2ba9022eb8f9b062c81bdc6fd24c7b4c4c16; 9f2475fe7406b8ef5f97099c4980021344872d9f преди 6aa722fca9d2aa1f64094101587f8f4a2f83f6aa; 9f2475fe7406b8ef5f97099c4980021344872d9f преди d7e3fa7d06bf7fcaac186d3c4d635caac166d36c
    • Linux Linux: 5.9; преди 5.9; 5.15.224 до 5.15.*; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.112 до 6.12.*; 6.18.53 до 6.18.*; 7.2.7 до 7.2.*; от 7.3 нататък

    История

    • 25 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-97530: Linux | freedomonline.bg