CVE-2026-46315: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: io_uring/waitid: clear waitid info before copying it to userspace IORING_OP_WAITID stores its result fields in struct io_waitid::info and later copies them to userspace siginfo. The prep path initializes the request arguments, but it does not initialize info itself. If the wait operation completes without reporting a child event, the common wait code can return without writing wo_info. In that case io_waitid_finish() still copies iw->info to userspace, exposing stale bytes from the reused io_kiocb command storage. Clear the result storage during prep so the io_uring path matches the regular waitid syscall, which uses a zero-initialized struct waitid_info.

Засегнати продукти

• Linux Linux: f31ecf671ddc498f20219453395794ff2383e06b преди 954518e5a4a5efc5033253f6e36fc7b9f98363a3; f31ecf671ddc498f20219453395794ff2383e06b преди b737c6612c60c23b40a9f31749b99e6f61943847; f31ecf671ddc498f20219453395794ff2383e06b преди 4d2a0de611ab60d02fc768ae0cd5918b16bd5474; f31ecf671ddc498f20219453395794ff2383e06b преди 93d93f5f8da791e98159795c6ef683f45bd95d13
• Linux Linux: 6.7; преди 6.7; 6.12.92 до 6.12.*; 6.18.34 до 6.18.*; 7.0.11 до 7.0.*; от 7.1 нататък

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-2026-46315
• https://nvd.nist.gov/vuln/detail/CVE-2026-46315
• https://git.kernel.org/stable/c/954518e5a4a5efc5033253f6e36fc7b9f98363a3
• https://git.kernel.org/stable/c/b737c6612c60c23b40a9f31749b99e6f61943847
• https://git.kernel.org/stable/c/4d2a0de611ab60d02fc768ae0cd5918b16bd5474
• https://git.kernel.org/stable/c/93d93f5f8da791e98159795c6ef683f45bd95d13