CVE-2026-89701: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: nfsd: validate nseconds in TIME_DELEG decode paths The xdrgen-based TIME_DELEG_ACCESS and TIME_DELEG_MODIFY decode arms store a raw uint32_t nseconds directly into tv_nsec without enforcing nseconds < NSEC_PER_SEC. The legacy nfsd4_decode_nfstime4 has this check but the TIME_DELEG paths do not. A malformed timespec can propagate through notify_change() to disk. Add range checks in both nfs4xdr.c (SETATTR path) and nfs4callback.c (CB_GETATTR path).

Засегнати продукти

• Linux Linux: 6ae30d6eb26bce02c48c60074b4306270e2434c1 преди 7e7b93da7fa2e77f977096251899d1410986adf6; 6ae30d6eb26bce02c48c60074b4306270e2434c1 преди 5eb489831a9fd4754f4baf26e6989efb66ce104c; 6ae30d6eb26bce02c48c60074b4306270e2434c1 преди 0f4a767340fad392bd656115b8752005518c9065
• Linux Linux: 6.14; преди 6.14; 6.18.50 до 6.18.*; 7.2.4 до 7.2.*; 7.3 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-2026-89701
• https://nvd.nist.gov/vuln/detail/CVE-2026-89701
• https://git.kernel.org/stable/c/7e7b93da7fa2e77f977096251899d1410986adf6
• https://git.kernel.org/stable/c/5eb489831a9fd4754f4baf26e6989efb66ce104c
• https://git.kernel.org/stable/c/0f4a767340fad392bd656115b8752005518c9065