EN

Tracker / CVE-2026-63833

CVE-2026-63833

Alta 7.1

In the Linux kernel, the following vulnerability has been resolved: ntfs3: reject direct userspace writes to reserved $LX* xattrs NTFS3 uses $LXUID, $LXGID, $LXMOD and $LXDEV as internal WSL permission metadata and reloads them into i_uid, i_gid and i_mode from ntfs_get_wsl_perm(). Because the empty-prefix xattr handler also lets file owners call setxattr() on these names directly, an unprivileged writer on a writable ntfs3 mount can plant root ownership and S_ISUID on their own file and gain euid 0 after inode reload. Reject direct userspace writes to the reserved $LX* names. Internal ntfs3 metadata updates are unchanged because ntfs_save_wsl_perm() writes them via ntfs_set_ea() directly. [[email protected]: added an additional check for non privileged users]

Prodotti e versioni affette

linux linux_kernel · 5.15 → 5.15.211
linux linux_kernel · 5.16 → 6.1.177
linux linux_kernel · 6.13 → 6.18.38
linux linux_kernel · 6.19 → 7.1.3
linux linux_kernel · 6.2 → 6.6.144
linux linux_kernel · 6.7 → 6.12.95

Analisi

Questa pagina non è ancora indicizzabile.Finché non contiene un’analisi originale — cosa espone davvero, come verificare in due minuti se un sistema è stato toccato, cosa fare se lo è stato — la pagina resta noindex. È il database a deciderlo, non il modello di pagina.

Riferimenti