FKIE_CVE-2022-50676

Vulnerability from fkie_nvd - Published: 2025-12-09 16:17 - Updated: 2025-12-09 18:37
Severity ?
Summary
In 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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2425007c0967a7c04b0dee7cce05ecf0ca869ad1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/30bfa5aa7228eb1e67663d67e553627e572cc717
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/360aa7219285fac63dab99706a16f2daf3222abe
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5d2ba255e93211e541373469dffbda7c99dfa0e5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a91b750fd6629354460282bbf5146c01b05c4859
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/afe7053c390fe8ff27d0c2ceaece5625283044ba
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c380c28ab9b15fc53565909c814f6dd3e7f77c4b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/da349221c4d2d4ac5f606c1c3b36d4ef0b3e6a0c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e3cb25d3ad08f5dbd53ce2b31720cad529944322
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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": "CVE-2022-50676",
  "lastModified": "2025-12-09T18:37:13.640",
  "metrics": {},
  "published": "2025-12-09T16:17:19.843",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2425007c0967a7c04b0dee7cce05ecf0ca869ad1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/30bfa5aa7228eb1e67663d67e553627e572cc717"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/360aa7219285fac63dab99706a16f2daf3222abe"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5d2ba255e93211e541373469dffbda7c99dfa0e5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a91b750fd6629354460282bbf5146c01b05c4859"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/afe7053c390fe8ff27d0c2ceaece5625283044ba"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c380c28ab9b15fc53565909c814f6dd3e7f77c4b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/da349221c4d2d4ac5f606c1c3b36d4ef0b3e6a0c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e3cb25d3ad08f5dbd53ce2b31720cad529944322"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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