GHSA-3P2F-FJ9W-3JG5
Vulnerability from github – Published: 2025-12-09 18:30 – Updated: 2026-08-04 12:34In the Linux kernel, the following vulnerability has been resolved:
net: rds: don't hold sock lock when cancelling work from rds_tcp_reset_callbacks()
syzbot is reporting lockdep warning at rds_tcp_reset_callbacks() [1], for commit ac3615e7f3cffe2a ("RDS: TCP: Reduce code duplication in rds_tcp_reset_callbacks()") added cancel_delayed_work_sync() into a section protected by lock_sock() without realizing that rds_send_xmit() might call lock_sock().
We don't need to protect cancel_delayed_work_sync() using lock_sock(), for even if rds_{send,recv}worker() re-queued this work while __flush_work() from cancel_delayed_work_sync() was waiting for this work to complete, retried rds{send,recv}_worker() is no-op due to the absence of RDS_CONN_UP bit.
{
"affected": [],
"aliases": [
"CVE-2022-50676"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-09T16:17:19Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: rds: don\u0027t hold sock lock when cancelling work from rds_tcp_reset_callbacks()\n\nsyzbot is reporting lockdep warning at rds_tcp_reset_callbacks() [1], for\ncommit ac3615e7f3cffe2a (\"RDS: TCP: Reduce code duplication in\nrds_tcp_reset_callbacks()\") added cancel_delayed_work_sync() into a section\nprotected by lock_sock() without realizing that rds_send_xmit() might call\nlock_sock().\n\nWe don\u0027t need to protect cancel_delayed_work_sync() using lock_sock(), for\neven if rds_{send,recv}_worker() re-queued this work while __flush_work()\n from cancel_delayed_work_sync() was waiting for this work to complete,\nretried rds_{send,recv}_worker() is no-op due to the absence of RDS_CONN_UP\nbit.",
"id": "GHSA-3p2f-fj9w-3jg5",
"modified": "2026-08-04T12:34:40Z",
"published": "2025-12-09T18:30:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50676"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2425007c0967a7c04b0dee7cce05ecf0ca869ad1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/30bfa5aa7228eb1e67663d67e553627e572cc717"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/360aa7219285fac63dab99706a16f2daf3222abe"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5d2ba255e93211e541373469dffbda7c99dfa0e5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a91b750fd6629354460282bbf5146c01b05c4859"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/afe7053c390fe8ff27d0c2ceaece5625283044ba"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c380c28ab9b15fc53565909c814f6dd3e7f77c4b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/da349221c4d2d4ac5f606c1c3b36d4ef0b3e6a0c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e3cb25d3ad08f5dbd53ce2b31720cad529944322"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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