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mptcp: handle fastopen disconnect correctly

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: mptcp: handle fastopen disconnect correctly Syzbot was able to trigger a data stream corruption: WARNING: CPU: 0 PID: 9846 at net/mptcp/protocol.c:1024 __mptcp_clean_una+0xddb/0xff0 net/mptcp/protocol.c:1024 Modules linked in: CPU: 0 UID: 0 PID: 9846 Comm: syz-executor351 Not tainted 6.13.0-rc2-syzkaller-00059-g00a5acdbf398 #0 Hardware name: Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 RIP: 0010:__mptcp_clean_una+0xddb/0xff0 net/mptcp/protocol.c:1024 Code: fa ff ff 48 8b 4c 24 18 80 e1 07 fe c1 38 c1 0f 8c 8e fa ff ff 48 8b 7c 24 18 e8 e0 db 54 f6 e9 7f fa ff ff e8 e6 80 ee f5 90 <0f> 0b 90 4c 8b 6c 24 40 4d 89 f4 e9 04 f5 ff ff 44 89 f1 80 e1 07 RSP: 0018:ffffc9000c0cf400 EFLAGS: 00010293 RAX: ffffffff8bb0dd5a RBX: ffff888033f5d230 RCX: ffff888059ce8000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000c0cf518 R08: ffffffff8bb0d1dd R09: 1ffff110170c8928 R10: dffffc0000000000 R11: ffffed10170c8929 R12: 0000000000000000 R13: ffff888033f5d220 R14: dffffc0000000000 R15: ffff8880592b8000 FS: 00007f6e866496c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6e86f491a0 CR3: 00000000310e6000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __mptcp_clean_una_wakeup+0x7f/0x2d0 net/mptcp

Announced Source revision 1
Original source ↗

CVE-2025-21705

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2025-21705

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "b7bb71dfb541df376c21c24451369fea83c4f327",
        "lessThan": "73e268b4be27b36ae68ea10755cb003f43b38884",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c2b2ae3925b65070adb27d5a31a31c376f26dec7",
        "lessThan": "0263fb2e7b7b88075a5d86e74c4384ee4400828d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c2b2ae3925b65070adb27d5a31a31c376f26dec7",
        "lessThan": "84ac44d9fed3a56440971cbd7600a02b70b5b32a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c2b2ae3925b65070adb27d5a31a31c376f26dec7",
        "lessThan": "6ec806762318a4adde0ea63342d42d0feae95079",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c2b2ae3925b65070adb27d5a31a31c376f26dec7",
        "lessThan": "619af16b3b57a3a4ee50b9a30add9ff155541e71",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9c998d59a6b1359ad43d1ef38538af5f55fd01a2",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "6.1.36",
        "lessThan": "6.1.129",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "6.3.10",
        "lessThan": "6.4",
        "versionType": "semver"
      }
    ],
    "programFiles": [
      "net/mptcp/protocol.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "6.4"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "6.4",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "6.1.129",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.76",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.13",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.13.2",
        "versionType": "semver",
        "lessThanOrEqual": "6.13.*"
      },
      {
        "status": "unaffected",
        "version": "6.14",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/mptcp/protocol.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2025-21705

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#26916 · Revision 1
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Publisher date
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