CVSS
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: bpf: Fix overflow of jump offset in constant blinding bpf_jit_blind_insn() rewrites 'if rX op imm goto off' into: AX = imm ^ rnd AX ^= rnd if rX op AX goto off and subtracts 2 from off when the jump is backward. off is s16, so -32767 and -32768 wrap and the jump goes 32767 insns forward, past the end of the prog. The jump is inside the patch, hence bpf_adj_branches() doesn't check it. The kernel crashes when such prog runs with bpf_jit_harden=2. Return -ERANGE in such case. bpf_jit_blind_constants() fails the same way when blinding of other insns moves a jump out of range.
Засегнати продукти
- Linux Linux: 4f3446bb809f20ad56cadf712e6006815ae7a8f9 преди 443328237113ee0ea515e506497334d871dbc2aa; 4f3446bb809f20ad56cadf712e6006815ae7a8f9 преди ad139384ecddb6f3e7e3c3c12765aafae0e39670
- Linux Linux: 4.7; преди 4.7; 7.2.10 до 7.2.*; от 7.3 нататък
История
- 18 октомври 2026 Публикувано