ghsa-cj8f-58h8-h475
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
netlink: fix potential deadlock in netlink_set_err()
syzbot reported a possible deadlock in netlink_set_err() [1]
A similar issue was fixed in commit 1d482e666b8e ("netlink: disable IRQs for netlink_lock_table()") in netlink_lock_table()
This patch adds IRQ safety to netlink_set_err() and __netlink_diag_dump() which were not covered by cited commit.
[1]
WARNING: possible irq lock inversion dependency detected 6.4.0-rc6-syzkaller-00240-g4e9f0ec38852 #0 Not tainted
syz-executor.2/23011 just changed the state of lock: ffffffff8e1a7a58 (nl_table_lock){.+.?}-{2:2}, at: netlink_set_err+0x2e/0x3a0 net/netlink/af_netlink.c:1612 but this lock was taken by another, SOFTIRQ-safe lock in the past: (&local->queue_stop_reason_lock){..-.}-{2:2}
and interrupts could create inverse lock ordering between them.
other info that might help us debug this: Possible interrupt unsafe locking scenario:
CPU0 CPU1
---- ----
lock(nl_table_lock); local_irq_disable(); lock(&local->queue_stop_reason_lock); lock(nl_table_lock); lock(&local->queue_stop_reason_lock);
*** DEADLOCK ***
{
"affected": [],
"aliases": [
"CVE-2023-53731"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-10-22T14:15:48Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetlink: fix potential deadlock in netlink_set_err()\n\nsyzbot reported a possible deadlock in netlink_set_err() [1]\n\nA similar issue was fixed in commit 1d482e666b8e (\"netlink: disable IRQs\nfor netlink_lock_table()\") in netlink_lock_table()\n\nThis patch adds IRQ safety to netlink_set_err() and __netlink_diag_dump()\nwhich were not covered by cited commit.\n\n[1]\n\nWARNING: possible irq lock inversion dependency detected\n6.4.0-rc6-syzkaller-00240-g4e9f0ec38852 #0 Not tainted\n\nsyz-executor.2/23011 just changed the state of lock:\nffffffff8e1a7a58 (nl_table_lock){.+.?}-{2:2}, at: netlink_set_err+0x2e/0x3a0 net/netlink/af_netlink.c:1612\nbut this lock was taken by another, SOFTIRQ-safe lock in the past:\n (\u0026local-\u003equeue_stop_reason_lock){..-.}-{2:2}\n\nand interrupts could create inverse lock ordering between them.\n\nother info that might help us debug this:\n Possible interrupt unsafe locking scenario:\n\n CPU0 CPU1\n ---- ----\n lock(nl_table_lock);\n local_irq_disable();\n lock(\u0026local-\u003equeue_stop_reason_lock);\n lock(nl_table_lock);\n \u003cInterrupt\u003e\n lock(\u0026local-\u003equeue_stop_reason_lock);\n\n *** DEADLOCK ***",
"id": "GHSA-cj8f-58h8-h475",
"modified": "2025-10-22T15:31:12Z",
"published": "2025-10-22T15:31:12Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53731"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1556ba034b95cfd4f75ea93c1a2679ae0444bba1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4b9adb8d4a62ff7608d4a7d4eb42036a88f30980"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/61ffe8b1ee084e5c82a4e4bbf9e7b68e0c06e464"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8d61f926d42045961e6b65191c09e3678d86a9cf"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8f6652ed2ad98fe6d13b903483d9257762ab2ec6"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a641240b7e071c5538dc0e7894ece833fce459dd"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c09e8e3f7fd432984bf5422302b093d2371dfc48"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/cde7b90e0539a3b11da377e463dfd2288a162dbf"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/eb8e27c8fa9397b4a7b181c48fa58157dbe9902e"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.