tcp: Fix out-of-bounds access for twsk in tcp_ao_established_key().
In the Linux kernel, the following vulnerability has been resolved: tcp: Fix out-of-bounds access for twsk in tcp_ao_established_key(). lockdep_sock_is_held() was added in tcp_ao_established_key() by the cited commit. It can be called from tcp_v[46]_timewait_ack() with twsk. Since it does not have sk->sk_lock, the lockdep annotation results in out-of-bound access. $ pahole -C tcp_timewait_sock vmlinux | grep size /* size: 288, cachelines: 5, members: 8 */ $ pahole -C sock vmlinux | grep sk_lock socket_lock_t sk_lock; /* 440 192 */ Let's not use lockdep_sock_is_held() for TCP_TIME_WAIT.
CVE-2026-64518
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: osv:CVE-2026-64518
Kernel
Source reference: /affected/1/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 6.12.92
Source reference:
/affected/1/ranges6.18.34Source reference:
/affected/1/ranges7.0.11Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "051f49d5176613dea88ecf73a101c3a99f4720e9"
},
{
"fixed": "87bb3e719042f0030a6dad39118c6a6b2a491ad9"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "6b2d11e2d8fc130df4708be0b6b53fd3e6b54cf6"
},
{
"fixed": "510db031ba6eb40134f84c90ef963ea4b6dfb878"
},
{
"fixed": "29cf64d128c94cf98d1c69d8b2962d39db5ff4c6"
},
{
"fixed": "03cb001ef87b3f8d859cf7f96329acf3d6235d29"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "6.12.5"
},
{
"fixed": "6.12.92"
}
]
}
],
"versions": [
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"v6.12.90",
"v6.12.89",
"v6.12.88",
"v6.12.87",
"v6.12.86",
"v6.12.85",
"v6.12.84",
"v6.12.83",
"v6.12.82",
"v6.12.81",
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"v6.12.79",
"v6.12.78",
"v6.12.77",
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"v6.12.71",
"v6.12.70",
"v6.12.69",
"v6.12.68",
"v6.12.67",
"v6.12.66",
"v6.12.65",
"v6.12.64",
"v6.12.63",
"v6.12.62",
"v6.12.61",
"v6.12.60",
"v6.12.59",
"v6.12.58",
"v6.12.57",
"v6.12.56",
"v6.12.55",
"v6.12.54",
"v6.12.53",
"v6.12.52",
"v6.12.51",
"v6.12.50",
"v6.12.49",
"v6.12.48",
"v6.12.47",
"v6.12.46",
"v6.12.45",
"v6.12.44",
"v6.12.43",
"v6.12.42",
"v6.12.41",
"v6.12.40",
"v6.12.39",
"v6.12.38",
"v6.12.37",
"v6.12.36",
"v6.12.35",
"v6.12.34",
"v6.12.33",
"v6.12.32",
"v6.12.31",
"v6.12.30",
"v6.12.29",
"v6.12.28",
"v6.12.27",
"v6.12.26",
"v6.12.25",
"v6.12.24",
"v6.12.23",
"v6.12.22",
"v6.12.21",
"v6.12.20",
"v6.12.19",
"v6.12.18",
"v6.12.17",
"v6.12.16",
"v6.12.15",
"v6.12.14",
"v6.12.13",
"v6.12.12",
"v6.12.11",
"v6.12.10",
"v6.12.9",
"v6.12.8",
"v6.12.7",
"v6.12.6",
"v6.12.5"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64518.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "6.12.92"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.13.0"
},
{
"fixed": "6.18.34"
},
{
"fixed": "7.0.11"
}
]
}
],
"package": {
"name": "Kernel",
"ecosystem": "Linux"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64518.json"
}
}
]- Related CVEs
- CVE-2026-64518
Source reference:
/id
Publisher severity
No explicit severity was provided.
- Event
- #50737 · Revision 1
- Added to Heist Feed
- Publisher date