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kernel: fix out of bound reading. close #1227

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weishu
2023-12-27 20:19:21 +08:00
parent fe7f509f9d
commit d6cbda49aa
1 changed files with 3 additions and 1 deletions
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kernel/allowlist.c
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@@ -458,7 +458,9 @@ void ksu_prune_allowlist(bool (*is_uid_valid)(uid_t, char *, void *), void *data
modified = true;
pr_info("prune uid: %d, package: %s\n", uid, package);
list_del(&np->list);
if (likely(uid <= BITMAP_UID_MAX)) {
allow_list_bitmap[uid / BITS_PER_BYTE] &= ~(1 << (uid % BITS_PER_BYTE));
}
remove_uid_from_arr(uid);
smp_mb();
kfree(np);