CVE-2026-23416: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: mm/mseal: update VMA end correctly on merge Previously we stored the end of the current VMA in curr_end, and then upon iterating to the next VMA updated curr_start to curr_end to advance to the next VMA. However, this doesn't take into account the fact that a VMA might be updated due to a merge by vma_modify_flags(), which can result in curr_end being stale and thus, upon setting curr_start to curr_end, ending up with an incorrect curr_start on the next iteration. Resolve the issue by setting curr_end to vma->vm_end unconditionally to ensure this value remains updated should this occur. While we're here, eliminate this entire class of bug by simply setting const curr_[start/end] to be clamped to the input range and VMAs, which also happens to simplify the logic.

Засегнати продукти

• Linux Linux: 6c2da14ae1e0a0146587381594559027bd46c059 преди 40b3f4700e5535fbe74738cebb9379a40ec66bed; 6c2da14ae1e0a0146587381594559027bd46c059 преди 83737e34b83a23b2a9bcf586b058b2c2a54c7c6b; 6c2da14ae1e0a0146587381594559027bd46c059 преди 2697dd8ae721db4f6a53d4f4cbd438212a80f8dc
• Linux Linux: 6.17; преди 6.17; 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-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-23416
• https://nvd.nist.gov/vuln/detail/CVE-2026-23416
• https://git.kernel.org/stable/c/40b3f4700e5535fbe74738cebb9379a40ec66bed
• https://git.kernel.org/stable/c/83737e34b83a23b2a9bcf586b058b2c2a54c7c6b
• https://git.kernel.org/stable/c/2697dd8ae721db4f6a53d4f4cbd438212a80f8dc