{
  "schema_version": "1.4.0",
  "id": "GHSA-7472-5646-8g66",
  "modified": "2025-09-16T15:32:33Z",
  "published": "2025-09-16T15:32:33Z",
  "aliases": [
    "CVE-2023-53291"
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nrcu/rcuscale: Stop kfree_scale_thread thread(s) after unloading rcuscale\n\nRunning the 'kfree_rcu_test' test case [1] results in a splat [2].\nThe root cause is the kfree_scale_thread thread(s) continue running\nafter unloading the rcuscale module.  This commit fixes that isue by\ninvoking kfree_scale_cleanup() from rcu_scale_cleanup() when removing\nthe rcuscale module.\n\n[1] modprobe rcuscale kfree_rcu_test=1\n    // After some time\n    rmmod rcuscale\n    rmmod torture\n\n[2] BUG: unable to handle page fault for address: ffffffffc0601a87\n    #PF: supervisor instruction fetch in kernel mode\n    #PF: error_code(0x0010) - not-present page\n    PGD 11de4f067 P4D 11de4f067 PUD 11de51067 PMD 112f4d067 PTE 0\n    Oops: 0010 [#1] PREEMPT SMP NOPTI\n    CPU: 1 PID: 1798 Comm: kfree_scale_thr Not tainted 6.3.0-rc1-rcu+ #1\n    Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 0.0.0 02/06/2015\n    RIP: 0010:0xffffffffc0601a87\n    Code: Unable to access opcode bytes at 0xffffffffc0601a5d.\n    RSP: 0018:ffffb25bc2e57e18 EFLAGS: 00010297\n    RAX: 0000000000000000 RBX: ffffffffc061f0b6 RCX: 0000000000000000\n    RDX: 0000000000000000 RSI: ffffffff962fd0de RDI: ffffffff962fd0de\n    RBP: ffffb25bc2e57ea8 R08: 0000000000000000 R09: 0000000000000000\n    R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000\n    R13: 0000000000000000 R14: 000000000000000a R15: 00000000001c1dbe\n    FS:  0000000000000000(0000) GS:ffff921fa2200000(0000) knlGS:0000000000000000\n    CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n    CR2: ffffffffc0601a5d CR3: 000000011de4c006 CR4: 0000000000370ee0\n    DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n    DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n    Call Trace:\n     <TASK>\n     ? kvfree_call_rcu+0xf0/0x3a0\n     ? kthread+0xf3/0x120\n     ? kthread_complete_and_exit+0x20/0x20\n     ? ret_from_fork+0x1f/0x30\n     </TASK>\n    Modules linked in: rfkill sunrpc ... [last unloaded: torture]\n    CR2: ffffffffc0601a87\n    ---[ end trace 0000000000000000 ]---",
  "severity": [],
  "affected": [],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53291"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1dd7547c7610723b2b6afe1a3c4ddb2bde63387c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/23fc8df26dead16687ae6eb47b0561a4a832e2f6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/29b1da4f90fc42c91beb4e400d926194925ad31b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/604d6a5ff718874904b0fe614878a42b42c0d699"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b8a6ba524d41f4da102e65f90498d9a910839621"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f766d45ab294871a3d588ee76c666852f151cad9"
    }
  ],
  "database_specific": {
    "cwe_ids": [],
    "severity": null,
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-16T08:15:38Z"
  }
}