CVSS
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: bpf: Don't resurrect a scalar id dropped by collect_linked_regs() check_cond_jmp_op() copies the compared registers into env->{false,true}_reg{1,2} before collect_linked_regs() runs and copies those snapshots back into both branch states afterwards. collect_linked_regs() records at most LINKED_REGS_MAX members of a linked registers group in the jump history and calls clear_scalar_id() for every member that does not fit. The compared register is not exempt from that. As a consequence, sync_linked_regs() might adjust ranges for more registers than bpf_bt_sync_linked_regs() can propagate precision to. Collect the linked registers before the snapshots are taken instead. This might lead to some unnecessary clear_scalar_id's, but from previous testing situations with many linked registers are extremely rare.
Засегнати продукти
- Linux Linux: ec1d77cb0ee98249142dcd0376d76e7a48ba0b31 преди e821ff19b8ef08255ff8d8234774ed814637e9bf; ec1d77cb0ee98249142dcd0376d76e7a48ba0b31 преди 73a98f96811e2cb0f4210b1caa8cb322f92f2a2b
- Linux Linux: 7.1; преди 7.1; 7.2.7 до 7.2.*; 7.3 до *
История
- 25 септември 2026 Публикувано