CVE-2026-93786
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Błąd w kernelu Linux pozwalał na poszerzenie uprawnień przy tworzeniu obiektów SMB.
CVSS
8.1
EPSS
0.3%
Exploit
none
Vendor
Opis źródłowy (NVD)
In the Linux kernel, the following vulnerability has been resolved: ksmbd: preserve VFS inherited POSIX ACL mask The VFS initializes a child's POSIX ACL from the parent's default ACL and the requested creation mode. Do not mutate the parent ACL or overwrite the child's VFS-computed access and default ACLs afterwards. This preserves restrictive ACL_MASK entries and prevents SMB object creation from widening effective permissions.
brak
Brak patcha
Źródła i daty
| Źródło | Wartość |
|---|---|
| NVD – CVSS | 8.1 |
| CISA KEV (aktywnie wykorzystywane) | Nie |
| FIRST EPSS (prawdopodobieństwo exploita) | 0.3% |
| Opublikowano (NVD) | 2026-09-24 17:17:11 UTC |
| Ostatnia modyfikacja (NVD) | 2026-10-03 11:17:48 UTC |
Referencje
- https://git.kernel.org/stable/c/0093909becbda22b62b39b654dbc607faed59cd0 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- https://git.kernel.org/stable/c/4a19bb1c45667f5a5f6eff9cf6648e0f692d046f (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- https://git.kernel.org/stable/c/591acf171644de590cda245fd8595b473a1beb70 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- https://git.kernel.org/stable/c/e148e567a9252643baa125cb65d7ae9c2c6cf68a (416baaa9-dc9f-4396-8d5f-8c081fb06d67)