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CVE-2026-99236: Linux

7.8

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: tracing: Reject incomplete event filter expressions A non-empty expression normally finishes in predicate_parse()'s inner loop, which resolves the pending logical operators before jumping to finalization. If the input ends after an operator, possibly followed by unary '!' tokens, the outer loop instead falls through with unresolved operator state. For example, "common_pid == 1 || common_pid == 2 &&" leaves prog[0].target equal to -1. The second pass then reads prog[-1] before the forward-jump check can reject it. Depending on adjacent slab contents, it can also copy an out-of-bounds word into a branch target that passes the forward-only check. A self-targeted perf tracepoint counting event can reach this path through PERF_EVENT_IOC_SET_FILTER. Reject the outer-loop fallthrough when a predicate has already been parsed. This ensures that non-empty expressions only reach finalization after the inner loop has resolved their operators. Keep the existing no-filter error for input that has no predicates. Add a regression test for trailing logical operators and unary negations.

    Засегнати продукти

    • Linux Linux: 80765597bc587feae8dbc8ce97a0f32e12a6e625 преди 4a1a6d35359991c5d47f4bf101cfbe1475c94093; 80765597bc587feae8dbc8ce97a0f32e12a6e625 преди 2a98f5d4913ec081e08e1075512cb7ec313d9f72; 80765597bc587feae8dbc8ce97a0f32e12a6e625 преди 15ff3cc7f2beecc3f95d66358f20ad7b057466aa; 80765597bc587feae8dbc8ce97a0f32e12a6e625 преди b205ff58e02922ac324f931cf9eb238a3acdb048; 80765597bc587feae8dbc8ce97a0f32e12a6e625 преди 5a999b5a16530898f0dbe5f8c50fd45ea72e110b; 80765597bc587feae8dbc8ce97a0f32e12a6e625 преди 1008e9e0b8280d47f1ab5e9c113f666a023a9697; 80765597bc587feae8dbc8ce97a0f32e12a6e625 преди 64993d970dde2a2da353e9e99595a4fa88ec27d9; 80765597bc587feae8dbc8ce97a0f32e12a6e625 преди 5bcdf3c18c3471122ee9652b0e2f5cdb718d9a46; 80765597bc587feae8dbc8ce97a0f32e12a6e625 преди 1fdc4164e488916402badddbb1f51e9380dabb91
    • Linux Linux: 4.17; преди 4.17; 5.10.273 до 5.10.*; 5.15.224 до 5.15.*; 6.1.191 до 6.1.*; 6.6.161 до 6.6.*; 6.12.115 до 6.12.*; 6.18.60 до 6.18.*; 7.2.14 до 7.2.*; 7.3.1 до 7.3.*; от 7.4-rc1 нататък

    История

    • 2 ноември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-99236: Linux | freedomonline.bg