CVE-2026-64354: Linux, грешка в паметта

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: bpf: Validate BTF repeated field counts before expansion btf_parse_struct_metas() walks user-supplied BTF during BPF_BTF_LOAD, and btf_repeat_fields() expands repeatable fields from array elements into the fixed BTF_FIELDS_MAX scratch array used by btf_parse_fields(). The remaining-capacity check performs the expanded field count calculation in u32. A malformed BTF can wrap that calculation, causing the check to pass even when the expanded field count exceeds the scratch array capacity. The following memcpy() can then write past the end of the array. Use checked addition and multiplication before copying repeated fields and reject impossible counts.

Засегнати продукти

• Linux Linux: 797d73ee232dd1833dec4824bc53a22032e97c1c преди c5ff816d5f13900c3f1f3298cfcc61339e056e56; 797d73ee232dd1833dec4824bc53a22032e97c1c преди cd407de2ef5dc70f1970b343ffaa16186340fdfd; 797d73ee232dd1833dec4824bc53a22032e97c1c преди ff77d013b737c0f77d925e2f2c59f0cf3d76bd35; 797d73ee232dd1833dec4824bc53a22032e97c1c преди b9452b594fd3aecbfd4aa0a6a1f741330a37dab7; 6f957d972feee9b385ea3ae6530310a84e55ba71; 6.11.6 преди 6.12
• Linux Linux: 6.12; преди 6.12; 6.12.96 до 6.12.*; 6.18.39 до 6.18.*; 7.1.4 до 7.1.*; от 7.2 нататък

Вид слабост

• CWE-190 Целочислено препълване отгоре

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-64354
• https://nvd.nist.gov/vuln/detail/CVE-2026-64354
• https://git.kernel.org/stable/c/c5ff816d5f13900c3f1f3298cfcc61339e056e56
• https://git.kernel.org/stable/c/cd407de2ef5dc70f1970b343ffaa16186340fdfd
• https://git.kernel.org/stable/c/ff77d013b737c0f77d925e2f2c59f0cf3d76bd35
• https://git.kernel.org/stable/c/b9452b594fd3aecbfd4aa0a6a1f741330a37dab7