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CVE-2026-89672: Linux

9.1

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се по мрежата, без особени условия, без вход и без действие от потребителя.

  • Експлоатация: няма данни за експлоатация
  • Атаката може да се автоматизира

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: nfsd: gate nfs2 setacl by argp->mask The NFSACL v2 SETACL path shares the decoder convention used by its v3 sibling: nfsaclsvc_decode_setaclargs() fills in argp->acl_access only when NFS_ACL is set in the request mask and argp->acl_default only when NFS_DFACL is set, leaving the other pointer NULL because the argument buffer is zeroed up to pc_argzero before decode. nfsacld_proc_setacl() then hands both pointers to set_posix_acl() unconditionally. set_posix_acl(idmap, dentry, type, NULL) is the VFS "remove this ACL type" operation, so an omitted arm is indistinguishable from an explicit request to delete that ACL. A SETACL carrying only NFS_ACL silently strips the directory's default ACL; mask=0 strips both. This is the same defect just fixed in nfsd3_proc_setacl(); apply the same remedy. Gate each set_posix_acl() call on its mask bit and initialize error to 0 so that a request with neither bit set leaves the on-disk ACLs untouched and returns success. The out_drop_lock path and the unconditional posix_acl_release() in nfsaclsvc_release_setacl() already tolerate the skipped arms.

Засегнати продукти

  • Linux Linux: a257cdd0e2179630d3201c32ba14d7fcb3c3a055 преди d00a2f81ba7c57045bd644971ddb6961c5efe3e0; a257cdd0e2179630d3201c32ba14d7fcb3c3a055 преди 760e7a4f92f597c61ab6b089f934a7e3acf238b7; a257cdd0e2179630d3201c32ba14d7fcb3c3a055 преди 54ff9c81d6b77de4540ba33a3b4d613ce3194863; a257cdd0e2179630d3201c32ba14d7fcb3c3a055 преди 8e4422b05f410f95c51b68a0db4bf1d87f6d22f5; a257cdd0e2179630d3201c32ba14d7fcb3c3a055 преди e41d173d9dc735cecb15ab7aa63ecab09338f81b; a257cdd0e2179630d3201c32ba14d7fcb3c3a055 преди f951b22dbeec46f2e0fba81cb80d1b0c686b61eb; a257cdd0e2179630d3201c32ba14d7fcb3c3a055 преди 37eea38e7898538f0ec5f1eb8b18d8646e4be41c; a257cdd0e2179630d3201c32ba14d7fcb3c3a055 преди a3a7e20ed66d3f04d37883c398da8a113b430769
  • Linux Linux: 2.6.13; преди 2.6.13; 5.10.273 до 5.10.*; 5.15.224 до 5.15.*; 6.1.191 до 6.1.*; 6.6.157 до 6.6.*; 6.12.109 до 6.12.*; 6.18.50 до 6.18.*; 7.2.4 до 7.2.*; от 7.3 нататък

История

  • 11 септември 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-89672: Linux | freedomonline.bg