CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, без особени условия, без вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: idpf: bound interrupt-vector register fill to the allocated array idpf_get_reg_intr_vecs() fills the caller-allocated reg_vals[] array from the VIRTCHNL2_OP_ALLOC_VECTORS reply in adapter->req_vec_chunks, bounding its inner loop only by the per-chunk num_vectors. The array is sized separately: idpf_intr_reg_init() allocates kzalloc_objs(struct idpf_vec_regs, total_vecs) from caps.num_allocated_vectors and only checks the returned count after the fill. The sum of per-chunk num_vectors is never reconciled against total_vecs, so a reply with a small num_allocated_vectors but chunks summing higher writes past the end of reg_vals[]. Impact: a control plane (a PF or hypervisor device model) that returns a VIRTCHNL2_OP_ALLOC_VECTORS reply whose per-chunk num_vectors sum exceeds num_allocated_vectors writes struct idpf_vec_regs entries past the end of the reg_vals kmalloc allocation (KASAN slab-out-of-bounds write). Bound the fill loop to the array capacity passed in by the callers, mirroring the sibling idpf_vport_get_q_reg(). The existing num_regs < num_vecs check then rejects an undersized reply without the out-of-bounds write happening first.
Засегнати продукти
- Linux Linux: d4d5587182664b0c4ab6d3556ce881cb975507c2 преди a6447b6a9678e701ca4d32789f311067cf528c2d; d4d5587182664b0c4ab6d3556ce881cb975507c2 преди e299b7d1334ebec4d43a7bb697d10c12df1aaed3; d4d5587182664b0c4ab6d3556ce881cb975507c2 преди 41bb8748124d0d8ee5d8e1eace9dfbc874bc9564; d4d5587182664b0c4ab6d3556ce881cb975507c2 преди 9f7007ee9858c99aa43101bc8352c672fee85644
- Linux Linux: 6.7; преди 6.7; 6.12.114 до 6.12.*; 6.18.57 до 6.18.*; 7.1.8 до 7.1.*; 7.2 до *
История
- 28 август 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-80693
- https://nvd.nist.gov/vuln/detail/CVE-2026-80693
- https://git.kernel.org/stable/c/a6447b6a9678e701ca4d32789f311067cf528c2d
- https://git.kernel.org/stable/c/e299b7d1334ebec4d43a7bb697d10c12df1aaed3
- https://git.kernel.org/stable/c/41bb8748124d0d8ee5d8e1eace9dfbc874bc9564
- https://git.kernel.org/stable/c/9f7007ee9858c99aa43101bc8352c672fee85644