mptcp: handle fastopen disconnect correctly
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
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
- Added to Heist Feed
- Publisher date