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CVE-2026-98062: 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: bpf: Mark signal tracepoint siginfo arguments as scalar The signal_generate and signal_deliver tracepoints declare their info argument as a struct kernel_siginfo pointer. btf_ctx_access() therefore treats it as a trusted pointer for tp_btf programs. Signal delivery also uses SEND_SIG_NOINFO and SEND_SIG_PRIV as special values for this argument. Those values are zero and one respectively, and are not pointers. A tp_btf program can currently dereference either value and fault the kernel. In particular, signal_generate can run from timer interrupt context, turning the fault into a kernel panic. Record both tracepoints in raw_tp_null_args[] and mark argument one as a non-pointer. This preserves scalar access to the cookie while rejecting direct and helper-mediated pointer use. Merely marking it nullable would not suffice because SEND_SIG_PRIV is nonzero.

    Засегнати продукти

    • Linux Linux: b2fc4b17fc13810ef440fb323fad3981cd174985 преди 05757377fa0447163d07c43a119f81abe1eef8dc; 838a10bd2ebfe11a60dd67687533a7cfc220cc86 преди 0e78cb242a57e481061fcb542fed4d51afba25c4; 838a10bd2ebfe11a60dd67687533a7cfc220cc86 преди d2eaea3599bcce659ce91862254dc91bcbdb6351; 838a10bd2ebfe11a60dd67687533a7cfc220cc86 преди 77515ab12e4983e6416f8c35039a3f0c0822ac70; 6.12.6 преди 6.12.114
    • Linux Linux: 6.13; преди 6.13; 6.12.114 до 6.12.*; 6.18.53 до 6.18.*; 7.2.7 до 7.2.*; от 7.3 нататък

    История

    • 25 септември 2026 Публикувано

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    Първоизточници

    CVE-2026-98062: Linux | freedomonline.bg