CVE-2026-31493: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: RDMA/efa: Fix use of completion ctx after free On admin queue completion handling, if the admin command completed with error we print data from the completion context. The issue is that we already freed the completion context in polling/interrupts handler which means we print data from context in an unknown state (it might be already used again). Change the admin submission flow so alloc/dealloc of the context will be symmetric and dealloc will be called after any potential use of the context.

Засегнати продукти

• Linux Linux: 68fb9f3e312a36e49fd05ec2d6b668daf2c4931a преди 8c24b5179af260a5f36571c992d29aab1f448544; 68fb9f3e312a36e49fd05ec2d6b668daf2c4931a преди 7ba09d85f177e9f5f64b881f33dbcb57b2cf23d5; 68fb9f3e312a36e49fd05ec2d6b668daf2c4931a преди 0dd98aea1c0c45987fa2dd92f988b0eb1a72c125; 68fb9f3e312a36e49fd05ec2d6b668daf2c4931a преди 1cf95fe5dc5471efea947b4c6f8913da6bc7976e; 68fb9f3e312a36e49fd05ec2d6b668daf2c4931a преди ef3b06742c8a201d0e83edc9a33a89a4fe3009f8
• Linux Linux: 5.12; преди 5.12; 6.6.160 до 6.6.*; 6.12.114 до 6.12.*; 6.18.21 до 6.18.*; 6.19.11 до 6.19.*; от 7.0 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-2026-31493
• https://nvd.nist.gov/vuln/detail/CVE-2026-31493
• https://git.kernel.org/stable/c/8c24b5179af260a5f36571c992d29aab1f448544
• https://git.kernel.org/stable/c/7ba09d85f177e9f5f64b881f33dbcb57b2cf23d5
• https://git.kernel.org/stable/c/0dd98aea1c0c45987fa2dd92f988b0eb1a72c125
• https://git.kernel.org/stable/c/1cf95fe5dc5471efea947b4c6f8913da6bc7976e
• https://git.kernel.org/stable/c/ef3b06742c8a201d0e83edc9a33a89a4fe3009f8