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CVE-2026-98626: Linux

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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: Restrict CO-RE poisoning to relocatable instructions CO-RE relocation records can name any instruction offset. When a relocation cannot be resolved, bpf_core_patch_insn() currently poisons its target before checking whether that instruction is a valid relocation target. Malformed metadata can therefore replace jumps, calls, exits, register-source arithmetic, or non-immediate loads instead of failing at the relocation step. Handle poisoning only after the instruction has passed the same class and operand-form checks used for a resolved relocation. Route invalid forms through the existing diagnostic and return a hard error. Keep poisoning supported instructions, including both halves of a plain ldimm64, so an unresolved relocation in dead code remains valid. Extend bpf_core_poison_insn() to poison both halves of ldimm64, and return its status directly from each validated instruction case. This avoids routing the success path through a common label and leaves the helper free to report errors. The shared relocation code applies this restriction to both libbpf and in-kernel CO-RE.

    Засегнати продукти

    • Linux Linux: d7a252708dbc950ca2064310217e8b9f85846e2f преди a8c47e62d9aea2d47a09e06c1682c59c21b92449; d7a252708dbc950ca2064310217e8b9f85846e2f преди d3219c229d16900cef936adad28633c98946e432; d7a252708dbc950ca2064310217e8b9f85846e2f преди a0b79cdfcf34b53c85bac2d3cf022fc1342eeca0; d7a252708dbc950ca2064310217e8b9f85846e2f преди f2a24101e89dd0804e717da7c1bd6af513698aa2; d7a252708dbc950ca2064310217e8b9f85846e2f преди 2d7d04357c41aa49a5ac658fcc207439f2ad6456; d7a252708dbc950ca2064310217e8b9f85846e2f преди 8e4cbcca1e0a2fc5e6c8edb68e0cf5f2587f9319; d7a252708dbc950ca2064310217e8b9f85846e2f преди 394ae398337c5f87e567f6cd63b937fc2b2f6ddc
    • Linux Linux: 5.6; преди 5.6; 5.15.222 до 5.15.*; 6.1.189 до 6.1.*; 6.6.158 до 6.6.*; 6.12.112 до 6.12.*; 6.18.55 до 6.18.*; 7.2.9 до 7.2.*; 7.3 до *

    История

    • 18 октомври 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-98626: Linux | freedomonline.bg