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[release/7.0-rc1] hold reference to SslContextHandle to prevent crashes #74367

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merged 2 commits into from
Aug 23, 2022
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[release/7.0-rc1] hold reference to SslContextHandle to prevent crashes #74367

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b3aecf0
fold reference to SslContextHandle to prevent crashes
wfurt Aug 15, 2022
f7c7cb4
Update src/libraries/Common/src/Interop/Unix/System.Security.Cryptogr…
danmoseley Aug 16, 2022
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3 changes: 3 additions & 0 deletions src/libraries/Common/src/Interop/Unix/System.Security.Cryptography.Native/Interop.OpenSsl.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -394,6 +394,9 @@ internal static SafeSslHandle AllocateSslHandle(SslAuthenticationOptions sslAuth
if (cacheSslContext && !string.IsNullOrEmpty(punyCode))
{
sslCtxHandle.TrySetSession(sslHandle, punyCode);
bool ignored = false;
sslCtxHandle.DangerousAddRef(ref ignored);
sslHandle.SslContextHandle = sslCtxHandle;
}

// relevant to TLS 1.3 only: if user supplied a client cert or cert callback,
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3 changes: 3 additions & 0 deletions src/libraries/Common/src/Interop/Unix/System.Security.Cryptography.Native/Interop.Ssl.cs
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Expand Up @@ -335,6 +335,7 @@ internal sealed class SafeSslHandle : SafeDeleteSslContext
private bool _handshakeCompleted;

public GCHandle AlpnHandle;
public SafeSslContextHandle? SslContextHandle;

public bool IsServer
{
Expand Down Expand Up @@ -432,6 +433,8 @@ protected override bool ReleaseHandle()
Disconnect();
}

SslContextHandle?.DangerousRelease();

IntPtr h = handle;
SetHandle(IntPtr.Zero);
Interop.Ssl.SslDestroy(h); // will free the handles underlying _readBio and _writeBio
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