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Patch gh for CVE-2025-27144, CVE-2025-22869 [High] #12692

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140 changes: 140 additions & 0 deletions SPECS/gh/CVE-2025-22869.patch
Original file line number Diff line number Diff line change
@@ -0,0 +1,140 @@
From 041b89a18f81265899e42e6801f830c101a96120 Mon Sep 17 00:00:00 2001
From: Kanishk-Bansal <[email protected]>
Date: Sun, 2 Mar 2025 13:46:00 +0000
Subject: [PATCH] CVE-2025-22869

Upstream Reference : https://github.com/golang/crypto/commit/7292932d45d55c7199324ab0027cc86e8198aa22

ssh: limit the size of the internal packet queue while waiting for KEX

In the SSH protocol, clients and servers execute the key exchange to
generate one-time session keys used for encryption and authentication.
The key exchange is performed initially after the connection is
established and then periodically after a configurable amount of data.
While a key exchange is in progress, we add the received packets to an
internal queue until we receive SSH_MSG_KEXINIT from the other side.
This can result in high memory usage if the other party is slow to
respond to the SSH_MSG_KEXINIT packet, or memory exhaustion if a
malicious client never responds to an SSH_MSG_KEXINIT packet during a
large file transfer.
We now limit the internal queue to 64 packets: this means 2MB with the
typical 32KB packet size.
When the internal queue is full we block further writes until the
pending key exchange is completed or there is a read or write error.

Thanks to Yuichi Watanabe for reporting this issue.

Change-Id: I1ce2214cc16e08b838d4bc346c74c72addafaeec
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/652135
Reviewed-by: Neal Patel <[email protected]>
Auto-Submit: Gopher Robot <[email protected]>
Reviewed-by: Roland Shoemaker <[email protected]>
LUCI-TryBot-Result: Go LUCI <[email protected]>

---
vendor/golang.org/x/crypto/ssh/handshake.go | 47 ++++++++++++++++-----
1 file changed, 37 insertions(+), 10 deletions(-)

diff --git a/vendor/golang.org/x/crypto/ssh/handshake.go b/vendor/golang.org/x/crypto/ssh/handshake.go
index 70a7369..e14eb6c 100644
--- a/vendor/golang.org/x/crypto/ssh/handshake.go
+++ b/vendor/golang.org/x/crypto/ssh/handshake.go
@@ -24,6 +24,11 @@ const debugHandshake = false
// quickly.
const chanSize = 16

+// maxPendingPackets sets the maximum number of packets to queue while waiting
+// for KEX to complete. This limits the total pending data to maxPendingPackets
+// * maxPacket bytes, which is ~16.8MB.
+const maxPendingPackets = 64
+
// keyingTransport is a packet based transport that supports key
// changes. It need not be thread-safe. It should pass through
// msgNewKeys in both directions.
@@ -58,11 +63,19 @@ type handshakeTransport struct {
incoming chan []byte
readError error

- mu sync.Mutex
- writeError error
- sentInitPacket []byte
- sentInitMsg *kexInitMsg
- pendingPackets [][]byte // Used when a key exchange is in progress.
+ mu sync.Mutex
+ // Condition for the above mutex. It is used to notify a completed key
+ // exchange or a write failure. Writes can wait for this condition while a
+ // key exchange is in progress.
+ writeCond *sync.Cond
+ writeError error
+ sentInitPacket []byte
+ sentInitMsg *kexInitMsg
+ // Used to queue writes when a key exchange is in progress. The length is
+ // limited by pendingPacketsSize. Once full, writes will block until the key
+ // exchange is completed or an error occurs. If not empty, it is emptied
+ // all at once when the key exchange is completed in kexLoop.
+ pendingPackets [][]byte
writePacketsLeft uint32
writeBytesLeft int64

@@ -114,6 +127,7 @@ func newHandshakeTransport(conn keyingTransport, config *Config, clientVersion,

config: config,
}
+ t.writeCond = sync.NewCond(&t.mu)
t.resetReadThresholds()
t.resetWriteThresholds()

@@ -236,6 +250,7 @@ func (t *handshakeTransport) recordWriteError(err error) {
defer t.mu.Unlock()
if t.writeError == nil && err != nil {
t.writeError = err
+ t.writeCond.Broadcast()
}
}

@@ -339,6 +354,8 @@ write:
}
}
t.pendingPackets = t.pendingPackets[:0]
+ // Unblock writePacket if waiting for KEX.
+ t.writeCond.Broadcast()
t.mu.Unlock()
}

@@ -526,11 +543,20 @@ func (t *handshakeTransport) writePacket(p []byte) error {
}

if t.sentInitMsg != nil {
- // Copy the packet so the writer can reuse the buffer.
- cp := make([]byte, len(p))
- copy(cp, p)
- t.pendingPackets = append(t.pendingPackets, cp)
- return nil
+ if len(t.pendingPackets) < maxPendingPackets {
+ // Copy the packet so the writer can reuse the buffer.
+ cp := make([]byte, len(p))
+ copy(cp, p)
+ t.pendingPackets = append(t.pendingPackets, cp)
+ return nil
+ }
+ for t.sentInitMsg != nil {
+ // Block and wait for KEX to complete or an error.
+ t.writeCond.Wait()
+ if t.writeError != nil {
+ return t.writeError
+ }
+ }
}

if t.writeBytesLeft > 0 {
@@ -547,6 +573,7 @@ func (t *handshakeTransport) writePacket(p []byte) error {

if err := t.pushPacket(p); err != nil {
t.writeError = err
+ t.writeCond.Broadcast()
}

return nil
--
2.45.2

49 changes: 49 additions & 0 deletions SPECS/gh/CVE-2025-27144.patch
Original file line number Diff line number Diff line change
@@ -0,0 +1,49 @@
From 72e5dc031b9ecdc0ba2db04b715bb43b8eefcf59 Mon Sep 17 00:00:00 2001
From: Kanishk-Bansal <[email protected]>
Date: Fri, 28 Feb 2025 09:57:57 +0000
Subject: [PATCH] CVE-2025-27144
Upstream Reference : https://github.com/go-jose/go-jose/commit/99b346cec4e86d102284642c5dcbe9bb0cacfc22
---
vendor/github.com/go-jose/go-jose/v4/jwe.go | 5 +++--
vendor/github.com/go-jose/go-jose/v4/jws.go | 5 +++--
2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/vendor/github.com/go-jose/go-jose/v4/jwe.go b/vendor/github.com/go-jose/go-jose/v4/jwe.go
index 89f03ee3..9f1322dc 100644
--- a/vendor/github.com/go-jose/go-jose/v4/jwe.go
+++ b/vendor/github.com/go-jose/go-jose/v4/jwe.go
@@ -288,10 +288,11 @@ func ParseEncryptedCompact(
keyAlgorithms []KeyAlgorithm,
contentEncryption []ContentEncryption,
) (*JSONWebEncryption, error) {
- parts := strings.Split(input, ".")
- if len(parts) != 5 {
+ // Five parts is four separators
+ if strings.Count(input, ".") != 4 {
return nil, fmt.Errorf("go-jose/go-jose: compact JWE format must have five parts")
}
+ parts := strings.SplitN(input, ".", 5)

rawProtected, err := base64.RawURLEncoding.DecodeString(parts[0])
if err != nil {
diff --git a/vendor/github.com/go-jose/go-jose/v4/jws.go b/vendor/github.com/go-jose/go-jose/v4/jws.go
index 3a912301..d09d8ba5 100644
--- a/vendor/github.com/go-jose/go-jose/v4/jws.go
+++ b/vendor/github.com/go-jose/go-jose/v4/jws.go
@@ -327,10 +327,11 @@ func parseSignedCompact(
payload []byte,
signatureAlgorithms []SignatureAlgorithm,
) (*JSONWebSignature, error) {
- parts := strings.Split(input, ".")
- if len(parts) != 3 {
+ // Three parts is two separators
+ if strings.Count(input, ".") != 2 {
return nil, fmt.Errorf("go-jose/go-jose: compact JWS format must have three parts")
}
+ parts := strings.SplitN(input, ".", 3)

if parts[1] != "" && payload != nil {
return nil, fmt.Errorf("go-jose/go-jose: payload is not detached")
--
2.45.2

7 changes: 6 additions & 1 deletion SPECS/gh/gh.spec
Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
Summary: GitHub official command line tool
Name: gh
Version: 2.62.0
Release: 6%{?dist}
Release: 7%{?dist}
License: MIT
Vendor: Microsoft Corporation
Distribution: Azure Linux
Expand All @@ -19,6 +19,8 @@ Patch2: CVE-2024-45337.patch
Patch3: CVE-2024-45338.patch
Patch5: CVE-2024-53859.patch
Patch6: CVE-2025-25204.patch
Patch7: CVE-2025-27144.patch
Patch8: CVE-2025-22869.patch

BuildRequires: golang < 1.23
BuildRequires: git
Expand Down Expand Up @@ -61,6 +63,9 @@ make test
%{_datadir}/zsh/site-functions/_gh

%changelog
* Fri Feb 28 2025 Kanishk Bansal <[email protected]> - 2.62.0-7
- Fix CVE-2025-27144, CVE-2025-22869 with an upstream patch

* Fri Feb 21 2025 Kshitiz Godara <[email protected]> - 2.62.0-6
- Patch CVE-2025-25204

Expand Down
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