CVE-2026-31430: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: X.509: Fix out-of-bounds access when parsing extensions Leo reports an out-of-bounds access when parsing a certificate with empty Basic Constraints or Key Usage extension because the first byte of the extension is read before checking its length. Fix it. The bug can be triggered by an unprivileged user by submitting a specially crafted certificate to the kernel through the keyrings(7) API. Leo has demonstrated this with a proof-of-concept program responsibly disclosed off-list.

Засегнати продукти

• Linux Linux: 30eae2b037af54b24109dcaea21db46f6285c69b преди 672b526def1f94c1be8eb11b885b803da0d8c2f1; 30eae2b037af54b24109dcaea21db46f6285c69b преди 30ab358fad0c7daa1d282ec48089901b21b36a20; 30eae2b037af54b24109dcaea21db46f6285c69b преди 206121294b9cf27f0589857f80d64f87e496ffb2; 30eae2b037af54b24109dcaea21db46f6285c69b преди 7fb4dadc2734f4020d7543d688b8d49c8e569c61; 30eae2b037af54b24109dcaea21db46f6285c69b преди d702c3408213bb12bd570bb97204d8340d141c51
• Linux Linux: 6.4; преди 6.4; 6.6.135 до 6.6.*; 6.12.82 до 6.12.*; 6.18.23 до 6.18.*; 6.19.13 до 6.19.*; 7.0 до *

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-2026-31430
• https://nvd.nist.gov/vuln/detail/CVE-2026-31430
• https://git.kernel.org/stable/c/672b526def1f94c1be8eb11b885b803da0d8c2f1
• https://git.kernel.org/stable/c/30ab358fad0c7daa1d282ec48089901b21b36a20
• https://git.kernel.org/stable/c/206121294b9cf27f0589857f80d64f87e496ffb2
• https://git.kernel.org/stable/c/7fb4dadc2734f4020d7543d688b8d49c8e569c61
• https://git.kernel.org/stable/c/d702c3408213bb12bd570bb97204d8340d141c51