JVN iPedia http://jvndb.jvn.jp Advisory JVNDB-2026-032057 Linuxカーネルにおいて、以下の脆弱性が修正されました：crypto: drbg - CTR_DRBGにおける失敗時に成功を返してしまう問題の修正です。drbg_ctr_generate()は失敗した場合でも成功を返すことがあり、その結果として出力バッファが初期化されないままになる問題がありました。これを修正しました。 cpe:/o:linux:linux_kernel https://jvndb.jvn.jp/ja/contents/2026/JVNDB-2026-032057.html Common Vulnerabilities and Exposures (CVE) CVE-2026-64306 https://www.cve.org/CVERecord?id=CVE-2026-64306 National Vulnerability Database (NVD) CVE-2026-64306 https://nvd.nist.gov/vuln/detail/CVE-2026-64306 JVNDB CWE-noinfo https://www.ipa.go.jp/security/vuln/scap/cwe.html 関連文書 crypto: drbg - Fix returning success on failure in CTR_DRBG - kernel/git/stable/linux.git - Linux kernel stable tree (https://git.kernel.org/stable/c/39a31ad9e2a5ed7e9c9c6f711dca96c8c8f5f26b) https://git.kernel.org/stable/c/39a31ad9e2a5ed7e9c9c6f711dca96c8c8f5f26b 関連文書 crypto: drbg - Fix returning success on failure in CTR_DRBG - kernel/git/stable/linux.git - Linux kernel stable tree (https://git.kernel.org/stable/c/75597e8774f319152744d24e0683d9393540a951) https://git.kernel.org/stable/c/75597e8774f319152744d24e0683d9393540a951 関連文書 crypto: drbg - Fix returning success on failure in CTR_DRBG - kernel/git/stable/linux.git - Linux kernel stable tree (https://git.kernel.org/stable/c/074db6db03a0aaa78f05ca9d4838053713796665) https://git.kernel.org/stable/c/074db6db03a0aaa78f05ca9d4838053713796665 関連文書 crypto: drbg - Fix returning success on failure in CTR_DRBG - kernel/git/stable/linux.git - Linux kernel stable tree (https://git.kernel.org/stable/c/a9e886f73dd717027028bb7e3bbca93601ecdfc7) https://git.kernel.org/stable/c/a9e886f73dd717027028bb7e3bbca93601ecdfc7 関連文書 crypto: drbg - Fix returning success on failure in CTR_DRBG - kernel/git/stable/linux.git - Linux kernel stable tree (https://git.kernel.org/stable/c/bbbac12083eff489b35d848332f0dff311131344) https://git.kernel.org/stable/c/bbbac12083eff489b35d848332f0dff311131344 関連文書 crypto: drbg - Fix returning success on failure in CTR_DRBG - kernel/git/stable/linux.git - Linux kernel stable tree (https://git.kernel.org/stable/c/cc42fb40171c249bb859071d81b4eb007398a0bc) https://git.kernel.org/stable/c/cc42fb40171c249bb859071d81b4eb007398a0bc 関連文書 crypto: drbg - Fix returning success on failure in CTR_DRBG - kernel/git/stable/linux.git - Linux kernel stable tree (https://git.kernel.org/stable/c/23b8b188cb32e5531d0f8d3af9506f8959cb369e) https://git.kernel.org/stable/c/23b8b188cb32e5531d0f8d3af9506f8959cb369e 関連文書 crypto: drbg - Fix returning success on failure in CTR_DRBG - kernel/git/stable/linux.git - Linux kernel stable tree (https://git.kernel.org/stable/c/7b03312491f9fe6ba4d60c4023e7e61d2d1fed96) https://git.kernel.org/stable/c/7b03312491f9fe6ba4d60c4023e7e61d2d1fed96 2026-09-04T17:50:50+09:00 2026-09-04T17:50:50+09:00