CVE-2023-53291 (GCVE-0-2023-53291)

Vulnerability from cvelistv5 – Published: 2025-09-16 08:11 – Updated: 2026-01-14 18:12
VLAI?
Title
rcu/rcuscale: Stop kfree_scale_thread thread(s) after unloading rcuscale
Summary
In the Linux kernel, the following vulnerability has been resolved: rcu/rcuscale: Stop kfree_scale_thread thread(s) after unloading rcuscale Running the 'kfree_rcu_test' test case [1] results in a splat [2]. The root cause is the kfree_scale_thread thread(s) continue running after unloading the rcuscale module. This commit fixes that isue by invoking kfree_scale_cleanup() from rcu_scale_cleanup() when removing the rcuscale module. [1] modprobe rcuscale kfree_rcu_test=1 // After some time rmmod rcuscale rmmod torture [2] BUG: unable to handle page fault for address: ffffffffc0601a87 #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0010) - not-present page PGD 11de4f067 P4D 11de4f067 PUD 11de51067 PMD 112f4d067 PTE 0 Oops: 0010 [#1] PREEMPT SMP NOPTI CPU: 1 PID: 1798 Comm: kfree_scale_thr Not tainted 6.3.0-rc1-rcu+ #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 0.0.0 02/06/2015 RIP: 0010:0xffffffffc0601a87 Code: Unable to access opcode bytes at 0xffffffffc0601a5d. RSP: 0018:ffffb25bc2e57e18 EFLAGS: 00010297 RAX: 0000000000000000 RBX: ffffffffc061f0b6 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff962fd0de RDI: ffffffff962fd0de RBP: ffffb25bc2e57ea8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: 000000000000000a R15: 00000000001c1dbe FS: 0000000000000000(0000) GS:ffff921fa2200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffc0601a5d CR3: 000000011de4c006 CR4: 0000000000370ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> ? kvfree_call_rcu+0xf0/0x3a0 ? kthread+0xf3/0x120 ? kthread_complete_and_exit+0x20/0x20 ? ret_from_fork+0x1f/0x30 </TASK> Modules linked in: rfkill sunrpc ... [last unloaded: torture] CR2: ffffffffc0601a87 ---[ end trace 0000000000000000 ]---
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: e6e78b004fa7e0ab455d46d27f218bf6ce178a18 , < 604d6a5ff718874904b0fe614878a42b42c0d699 (git)
Affected: e6e78b004fa7e0ab455d46d27f218bf6ce178a18 , < f766d45ab294871a3d588ee76c666852f151cad9 (git)
Affected: e6e78b004fa7e0ab455d46d27f218bf6ce178a18 , < b8a6ba524d41f4da102e65f90498d9a910839621 (git)
Affected: e6e78b004fa7e0ab455d46d27f218bf6ce178a18 , < 1dd7547c7610723b2b6afe1a3c4ddb2bde63387c (git)
Affected: e6e78b004fa7e0ab455d46d27f218bf6ce178a18 , < 29b1da4f90fc42c91beb4e400d926194925ad31b (git)
Affected: e6e78b004fa7e0ab455d46d27f218bf6ce178a18 , < 23fc8df26dead16687ae6eb47b0561a4a832e2f6 (git)
Create a notification for this product.
    Linux Linux Affected: 5.6
Unaffected: 0 , < 5.6 (semver)
Unaffected: 5.10.188 , ≤ 5.10.* (semver)
Unaffected: 5.15.121 , ≤ 5.15.* (semver)
Unaffected: 6.1.39 , ≤ 6.1.* (semver)
Unaffected: 6.3.13 , ≤ 6.3.* (semver)
Unaffected: 6.4.4 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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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     \u003cTASK\u003e\\n     ? kvfree_call_rcu+0xf0/0x3a0\\n     ? kthread+0xf3/0x120\\n     ? kthread_complete_and_exit+0x20/0x20\\n     ? ret_from_fork+0x1f/0x30\\n     \u003c/TASK\u003e\\n    Modules linked in: rfkill sunrpc ... [last unloaded: torture]\\n    CR2: ffffffffc0601a87\\n    ---[ end trace 0000000000000000 ]---\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.188\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.121\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.39\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.3.13\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.4.4\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.5\", \"versionStartIncluding\": \"5.6\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-09-16T08:11:23.666Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-53291\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-14T18:12:56.096Z\", \"dateReserved\": \"2025-09-16T08:09:37.992Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-09-16T08:11:23.666Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.