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CVE-2026-97587: Linux

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CVSS

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: perf: RISC-V: store available counter mask as bitmap The available-counter mask was a single unsigned long, but iteration uses RISCV_MAX_COUNTERS, which is 64. On RV32 that reads past the object. Filling with an unsigned-long bit at index 32 and above is also wrong. Use DECLARE_BITMAP and set_bit/bitmap helpers. Walk each bitmap word into CFG_MATCH when checking events, when allocating an index, and when stopping all counters. Set the counter base to i times BITS_PER_LONG. Share the CFG_MATCH ecall through a small helper so the 32-bit argument split is not duplicated. On qemu-system-riscv32 the probe bitmap has bits above XLEN set, so the first word alone is not enough. [[email protected]: updated to apply; fixed checkpatch.pl issues]

    Засегнати продукти

    • Linux Linux: e9991434596f5373dfd75857b445eb92a9253c56 преди 433249a4de52ecda40ffa9c466cec1312e62826f; e9991434596f5373dfd75857b445eb92a9253c56 преди 5a1b6379eed5b13eac0228b605b0bed988e547e9; e9991434596f5373dfd75857b445eb92a9253c56 преди 143668c424772979a45118dc9cc9c2c13a35f41d; e9991434596f5373dfd75857b445eb92a9253c56 преди 9bec7beaed074bcae4181fde9ff9dfbe4e7b0957; e9991434596f5373dfd75857b445eb92a9253c56 преди e5481db31f4654e9a1254d5d467d9b1ff2f8b1cb; e9991434596f5373dfd75857b445eb92a9253c56 преди 6809da6e9c08ccc9a09cb0a48c61471679274aaa
    • Linux Linux: 5.18; преди 5.18; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.111 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-2026-97587: Linux | freedomonline.bg