CVE-2026-93266: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: arm64: RSI: fix field-spanning write warning in attestation token init The challenge is passed in registers a1 through a8. However, copying to &regs.a1 makes FORTIFY treat the destination as the single a1 field, resulting in a field-spanning write warning. [1] Overlay the SMCCC register structure with an RSI-specific argument layout and copy the challenge into an explicit 64-byte array. This keeps the existing a1-a8 argument encoding while giving the copy a correctly sized destination object. [1] memcpy: detected field-spanning write (size 64) of single field "&regs.a1" at ./arch/arm64/include/asm/rsi_cmds.h:119 (size 8) WARNING: ./arch/arm64/include/asm/rsi_cmds.h:119 at rsi_attestation_token_init+0xdc/0xf8 [arm_cca_guest], CPU#0: cat/3314

Засегнати продукти

• Linux Linux: b880a80011f56880f32bde47fc6af313359f926b преди e505092cb200d430d5b8d8d3e926d45f29474ba3; b880a80011f56880f32bde47fc6af313359f926b преди d29a8ee271da17b5e32d7a76a9c78d43f66447ca; b880a80011f56880f32bde47fc6af313359f926b преди 221049874b6a78c7d87bc826581b0695cd338e2b
• Linux Linux: 6.13; преди 6.13; 6.18.52 до 6.18.*; 7.2.6 до 7.2.*; от 7.3 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-93266
• https://nvd.nist.gov/vuln/detail/CVE-2026-93266
• https://git.kernel.org/stable/c/e505092cb200d430d5b8d8d3e926d45f29474ba3
• https://git.kernel.org/stable/c/d29a8ee271da17b5e32d7a76a9c78d43f66447ca
• https://git.kernel.org/stable/c/221049874b6a78c7d87bc826581b0695cd338e2b