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[lts94] net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done #468

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Merged
merged 1 commit into from
Aug 7, 2025
Merged

[lts94] net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done #468

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5 changes: 5 additions & 0 deletions net/tipc/crypto.c
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Original file line number Diff line number Diff line change
Expand Up @@ -817,12 +817,16 @@ static int tipc_aead_encrypt(struct tipc_aead *aead, struct sk_buff *skb,
goto exit;
}

/* Get net to avoid freed tipc_crypto when delete namespace */
get_net(aead->crypto->net);

/* Now, do encrypt */
rc = crypto_aead_encrypt(req);
if (rc == -EINPROGRESS || rc == -EBUSY)
return rc;

tipc_bearer_put(b);
put_net(aead->crypto->net);

exit:
kfree(ctx);
Expand Down Expand Up @@ -860,6 +864,7 @@ static void tipc_aead_encrypt_done(struct crypto_async_request *base, int err)
kfree(tx_ctx);
tipc_bearer_put(b);
tipc_aead_put(aead);
put_net(net);
}

/**
Expand Down