Update module github.com/moby/spdystream to v0.5.1 [SECURITY]

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
github.com/moby/spdystream	v0.5.0 → v0.5.1

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SpdyStream: DOS on CRI

CVE-2026-35469 / GHSA-pc3f-x583-g7j2

More information

Details

The SPDY/3 frame parser in spdystream does not validate
attacker-controlled counts and lengths before allocating memory. A
remote peer that can send SPDY frames to a service using spdystream can
cause the process to allocate gigabytes of memory with a small number of
malformed control frames, leading to an out-of-memory crash.
 
Three allocation paths in the receive side are affected:

1. SETTINGS entry count -- The SETTINGS frame reader reads a 32-bit
   numSettings from the payload and allocates a slice of that size
   without checking it against the declared frame length. An attacker
   can set numSettings to a value far exceeding the actual payload,
   triggering a large allocation before any setting data is read.
    
2. Header count -- parseHeaderValueBlock reads a 32-bit
   numHeaders from the decompressed header block and allocates an
   http.Header map of that size with no upper bound.
    
3. Header field size -- Individual header name and value lengths are
   read as 32-bit integers and used directly as allocation sizes with
   no validation.
    
   Because SPDY header blocks are zlib-compressed, a small on-the-wire
   payload can decompress into attacker-controlled bytes that the parser
   interprets as 32-bit counts and lengths. A single crafted frame is
   enough to exhaust process memory.

Impact

 Any program that accepts SPDY connections using spdystream -- directly
or through a dependent library -- is affected. A remote peer that can
send SPDY frames to the service can crash the process with a single
crafted SPDY control frame, causing denial of service.

Affected versions

 github.com/moby/spdystream <= v0.5.0

Fix

 v0.5.1 addresses the receive-side allocation bugs and adds related
hardening:
 
Core fixes:
 

• SETTINGS entry-count validation -- The SETTINGS frame reader now
  checks that numSettings is consistent with the declared frame
  length (numSettings <= (length-4)/8) before allocating.
   
• Header count limit -- parseHeaderValueBlock enforces a maximum
  number of headers per frame (default: 1000).
   
• Header field size limit -- Individual header name and value
  lengths are checked against a per-field size limit (default: 1 MiB)
  before allocation.
   
• Connection closure on protocol error -- The connection read loop
  now closes the underlying net.Conn when it encounters an
  InvalidControlFrame error, preventing further exploitation on the
  same connection.
   
  Additional hardening:
   
• Write-side bounds checks -- All frame write methods now verify
  that payloads fit within the 24-bit length field, preventing the
  library from producing invalid frames.
   
  Configurable limits:
   
• Callers can adjust the defaults using NewConnectionWithOptions or
  the lower-level spdy.NewFramerWithOptions with functional options:
  WithMaxControlFramePayloadSize, WithMaxHeaderFieldSize, and
  WithMaxHeaderCount.
   

Severity

• CVSS Score: 8.7 / 10 (High)
• Vector String: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

References

• https://github.com/moby/spdystream/security/advisories/GHSA-pc3f-x583-g7j2
• https://nvd.nist.gov/vuln/detail/CVE-2026-35469
• https://github.com/moby/spdystream/releases/tag/v0.5.1
• https://github.com/moby/spdystream/commit/ef6121f62c730110bf5ae604a865a8613bfb787f
• https://github.com/advisories/GHSA-pc3f-x583-g7j2

This data is provided by the GitHub Advisory Database (CC-BY 4.0).

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Release Notes

moby/spdystream (github.com/moby/spdystream)

v0.5.1

Compare Source

What's Changed

Security

Fix memory amplification in SPDY frame parsing leads to denial of service (CVE-2026-35469 / GHSA-pc3f-x583-g7j2)

Changes

• spdy: fix duplicate license headers, add LICENSE, PATENTS, and update NOTICE #​106
• ci: update actions and test against latest Go versions #​107
• use ioutil.Discard for go1.13 compatibility #​109

Full Changelog: moby/spdystream@v0.5.0...v0.5.1

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✅ Load Test Results (quick)

✅ Load Test Results: ALL TESTS PASSED

🚀 Quick Test (S1, S4, S6) — Use /loadtest for full suite

3/3 passed (100%)

	Scenario	Description	Actions	Errors
✅	S1	S1: 143 burst updates, each triggers 1 dep...	143/143	0
✅	S4	S4: 143 no-op updates, all should be skipped	0	0
✅	S6	S6: Restart test - 142 updates during restart	139	0

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