Vulnerability-Lookup

GHSA-449W-38PP-J3QP

Vulnerability from github – Published: 2025-10-04 18:31 – Updated: 2026-02-12 18:30

Details

In the Linux kernel, the following vulnerability has been resolved:

rcu-tasks: Avoid pr_info() with spin lock in cblist_init_generic()

pr_info() is called with rtp->cbs_gbl_lock spin lock locked. Because pr_info() calls printk() that might sleep, this will result in BUG like below:

[ 0.206455] cblist_init_generic: Setting adjustable number of callback queues. [ 0.206463] [ 0.206464] ============================= [ 0.206464] [ BUG: Invalid wait context ] [ 0.206465] 5.19.0-00428-g9de1f9c8ca51 #5 Not tainted [ 0.206466] ----------------------------- [ 0.206466] swapper/0/1 is trying to lock: [ 0.206467] ffffffffa0167a58 (&port_lock_key){....}-{3:3}, at: serial8250_console_write+0x327/0x4a0 [ 0.206473] other info that might help us debug this: [ 0.206473] context-{5:5} [ 0.206474] 3 locks held by swapper/0/1: [ 0.206474] #0: ffffffff9eb597e0 (rcu_tasks.cbs_gbl_lock){....}-{2:2}, at: cblist_init_generic.constprop.0+0x14/0x1f0 [ 0.206478] #1: ffffffff9eb579c0 (console_lock){+.+.}-{0:0}, at: _printk+0x63/0x7e [ 0.206482] #2: ffffffff9ea77780 (console_owner){....}-{0:0}, at: console_emit_next_record.constprop.0+0x111/0x330 [ 0.206485] stack backtrace: [ 0.206486] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.19.0-00428-g9de1f9c8ca51 #5 [ 0.206488] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-1.fc36 04/01/2014 [ 0.206489] Call Trace: [ 0.206490] [ 0.206491] dump_stack_lvl+0x6a/0x9f [ 0.206493] __lock_acquire.cold+0x2d7/0x2fe [ 0.206496] ? stack_trace_save+0x46/0x70 [ 0.206497] lock_acquire+0xd1/0x2f0 [ 0.206499] ? serial8250_console_write+0x327/0x4a0 [ 0.206500] ? __lock_acquire+0x5c7/0x2720 [ 0.206502] _raw_spin_lock_irqsave+0x3d/0x90 [ 0.206504] ? serial8250_console_write+0x327/0x4a0 [ 0.206506] serial8250_console_write+0x327/0x4a0 [ 0.206508] console_emit_next_record.constprop.0+0x180/0x330 [ 0.206511] console_unlock+0xf7/0x1f0 [ 0.206512] vprintk_emit+0xf7/0x330 [ 0.206514] _printk+0x63/0x7e [ 0.206516] cblist_init_generic.constprop.0.cold+0x24/0x32 [ 0.206518] rcu_init_tasks_generic+0x5/0xd9 [ 0.206522] kernel_init_freeable+0x15b/0x2a2 [ 0.206523] ? rest_init+0x160/0x160 [ 0.206526] kernel_init+0x11/0x120 [ 0.206527] ret_from_fork+0x1f/0x30 [ 0.206530] [ 0.207018] cblist_init_generic: Setting shift to 1 and lim to 1.

This patch moves pr_info() so that it is called without rtp->cbs_gbl_lock locked.

Severity ?

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2023-53558"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-04T16:15:51Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nrcu-tasks: Avoid pr_info() with spin lock in cblist_init_generic()\n\npr_info() is called with rtp-\u003ecbs_gbl_lock spin lock locked.  Because\npr_info() calls printk() that might sleep, this will result in BUG\nlike below:\n\n[    0.206455] cblist_init_generic: Setting adjustable number of callback queues.\n[    0.206463]\n[    0.206464] =============================\n[    0.206464] [ BUG: Invalid wait context ]\n[    0.206465] 5.19.0-00428-g9de1f9c8ca51 #5 Not tainted\n[    0.206466] -----------------------------\n[    0.206466] swapper/0/1 is trying to lock:\n[    0.206467] ffffffffa0167a58 (\u0026port_lock_key){....}-{3:3}, at: serial8250_console_write+0x327/0x4a0\n[    0.206473] other info that might help us debug this:\n[    0.206473] context-{5:5}\n[    0.206474] 3 locks held by swapper/0/1:\n[    0.206474]  #0: ffffffff9eb597e0 (rcu_tasks.cbs_gbl_lock){....}-{2:2}, at: cblist_init_generic.constprop.0+0x14/0x1f0\n[    0.206478]  #1: ffffffff9eb579c0 (console_lock){+.+.}-{0:0}, at: _printk+0x63/0x7e\n[    0.206482]  #2: ffffffff9ea77780 (console_owner){....}-{0:0}, at: console_emit_next_record.constprop.0+0x111/0x330\n[    0.206485] stack backtrace:\n[    0.206486] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.19.0-00428-g9de1f9c8ca51 #5\n[    0.206488] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-1.fc36 04/01/2014\n[    0.206489] Call Trace:\n[    0.206490]  \u003cTASK\u003e\n[    0.206491]  dump_stack_lvl+0x6a/0x9f\n[    0.206493]  __lock_acquire.cold+0x2d7/0x2fe\n[    0.206496]  ? stack_trace_save+0x46/0x70\n[    0.206497]  lock_acquire+0xd1/0x2f0\n[    0.206499]  ? serial8250_console_write+0x327/0x4a0\n[    0.206500]  ? __lock_acquire+0x5c7/0x2720\n[    0.206502]  _raw_spin_lock_irqsave+0x3d/0x90\n[    0.206504]  ? serial8250_console_write+0x327/0x4a0\n[    0.206506]  serial8250_console_write+0x327/0x4a0\n[    0.206508]  console_emit_next_record.constprop.0+0x180/0x330\n[    0.206511]  console_unlock+0xf7/0x1f0\n[    0.206512]  vprintk_emit+0xf7/0x330\n[    0.206514]  _printk+0x63/0x7e\n[    0.206516]  cblist_init_generic.constprop.0.cold+0x24/0x32\n[    0.206518]  rcu_init_tasks_generic+0x5/0xd9\n[    0.206522]  kernel_init_freeable+0x15b/0x2a2\n[    0.206523]  ? rest_init+0x160/0x160\n[    0.206526]  kernel_init+0x11/0x120\n[    0.206527]  ret_from_fork+0x1f/0x30\n[    0.206530]  \u003c/TASK\u003e\n[    0.207018] cblist_init_generic: Setting shift to 1 and lim to 1.\n\nThis patch moves pr_info() so that it is called without\nrtp-\u003ecbs_gbl_lock locked.",
  "id": "GHSA-449w-38pp-j3qp",
  "modified": "2026-02-12T18:30:18Z",
  "published": "2025-10-04T18:31:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53558"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5fc8cbe4cf0fd34ded8045c385790c3bf04f6785"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9027d69221ff96e1356f070f7feb2ff989ae7388"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ea9b81c7d9104040b46a84d2303045de267f5557"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2023-53558 (GCVE-0-2023-53558)

Vulnerability from cvelistv5 – Published: 2025-10-04 15:17 – Updated: 2025-10-29 10:50

Title

rcu-tasks: Avoid pr_info() with spin lock in cblist_init_generic()

Summary

In the Linux kernel, the following vulnerability has been resolved: rcu-tasks: Avoid pr_info() with spin lock in cblist_init_generic() pr_info() is called with rtp->cbs_gbl_lock spin lock locked. Because pr_info() calls printk() that might sleep, this will result in BUG like below: [ 0.206455] cblist_init_generic: Setting adjustable number of callback queues. [ 0.206463] [ 0.206464] ============================= [ 0.206464] [ BUG: Invalid wait context ] [ 0.206465] 5.19.0-00428-g9de1f9c8ca51 #5 Not tainted [ 0.206466] ----------------------------- [ 0.206466] swapper/0/1 is trying to lock: [ 0.206467] ffffffffa0167a58 (&port_lock_key){....}-{3:3}, at: serial8250_console_write+0x327/0x4a0 [ 0.206473] other info that might help us debug this: [ 0.206473] context-{5:5} [ 0.206474] 3 locks held by swapper/0/1: [ 0.206474] #0: ffffffff9eb597e0 (rcu_tasks.cbs_gbl_lock){....}-{2:2}, at: cblist_init_generic.constprop.0+0x14/0x1f0 [ 0.206478] #1: ffffffff9eb579c0 (console_lock){+.+.}-{0:0}, at: _printk+0x63/0x7e [ 0.206482] #2: ffffffff9ea77780 (console_owner){....}-{0:0}, at: console_emit_next_record.constprop.0+0x111/0x330 [ 0.206485] stack backtrace: [ 0.206486] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.19.0-00428-g9de1f9c8ca51 #5 [ 0.206488] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-1.fc36 04/01/2014 [ 0.206489] Call Trace: [ 0.206490] <TASK> [ 0.206491] dump_stack_lvl+0x6a/0x9f [ 0.206493] __lock_acquire.cold+0x2d7/0x2fe [ 0.206496] ? stack_trace_save+0x46/0x70 [ 0.206497] lock_acquire+0xd1/0x2f0 [ 0.206499] ? serial8250_console_write+0x327/0x4a0 [ 0.206500] ? __lock_acquire+0x5c7/0x2720 [ 0.206502] _raw_spin_lock_irqsave+0x3d/0x90 [ 0.206504] ? serial8250_console_write+0x327/0x4a0 [ 0.206506] serial8250_console_write+0x327/0x4a0 [ 0.206508] console_emit_next_record.constprop.0+0x180/0x330 [ 0.206511] console_unlock+0xf7/0x1f0 [ 0.206512] vprintk_emit+0xf7/0x330 [ 0.206514] _printk+0x63/0x7e [ 0.206516] cblist_init_generic.constprop.0.cold+0x24/0x32 [ 0.206518] rcu_init_tasks_generic+0x5/0xd9 [ 0.206522] kernel_init_freeable+0x15b/0x2a2 [ 0.206523] ? rest_init+0x160/0x160 [ 0.206526] kernel_init+0x11/0x120 [ 0.206527] ret_from_fork+0x1f/0x30 [ 0.206530] </TASK> [ 0.207018] cblist_init_generic: Setting shift to 1 and lim to 1. This patch moves pr_info() so that it is called without rtp->cbs_gbl_lock locked.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/9027d69221ff96e13…
	https://git.kernel.org/stable/c/ea9b81c7d9104040b…
	https://git.kernel.org/stable/c/5fc8cbe4cf0fd34de…

Impacted products

Vendor

Product

Version

Linux

Affected: ab97152f88a4d580b89f0b7cc3028ffac438216f , < 9027d69221ff96e1356f070f7feb2ff989ae7388 (git)
Affected: ab97152f88a4d580b89f0b7cc3028ffac438216f , < ea9b81c7d9104040b46a84d2303045de267f5557 (git)
Affected: ab97152f88a4d580b89f0b7cc3028ffac438216f , < 5fc8cbe4cf0fd34ded8045c385790c3bf04f6785 (git)

Linux

Affected: 5.17
Unaffected: 0 , < 5.17 (semver)
Unaffected: 6.1.42 , ≤ 6.1.* (semver)
Unaffected: 6.4.7 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/rcu/tasks.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9027d69221ff96e1356f070f7feb2ff989ae7388",
              "status": "affected",
              "version": "ab97152f88a4d580b89f0b7cc3028ffac438216f",
              "versionType": "git"
            },
            {
              "lessThan": "ea9b81c7d9104040b46a84d2303045de267f5557",
              "status": "affected",
              "version": "ab97152f88a4d580b89f0b7cc3028ffac438216f",
              "versionType": "git"
            },
            {
              "lessThan": "5fc8cbe4cf0fd34ded8045c385790c3bf04f6785",
              "status": "affected",
              "version": "ab97152f88a4d580b89f0b7cc3028ffac438216f",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/rcu/tasks.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.17"
            },
            {
              "lessThan": "5.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.4.*",
              "status": "unaffected",
              "version": "6.4.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.5",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.42",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.4.7",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.5",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrcu-tasks: Avoid pr_info() with spin lock in cblist_init_generic()\n\npr_info() is called with rtp-\u003ecbs_gbl_lock spin lock locked.  Because\npr_info() calls printk() that might sleep, this will result in BUG\nlike below:\n\n[    0.206455] cblist_init_generic: Setting adjustable number of callback queues.\n[    0.206463]\n[    0.206464] =============================\n[    0.206464] [ BUG: Invalid wait context ]\n[    0.206465] 5.19.0-00428-g9de1f9c8ca51 #5 Not tainted\n[    0.206466] -----------------------------\n[    0.206466] swapper/0/1 is trying to lock:\n[    0.206467] ffffffffa0167a58 (\u0026port_lock_key){....}-{3:3}, at: serial8250_console_write+0x327/0x4a0\n[    0.206473] other info that might help us debug this:\n[    0.206473] context-{5:5}\n[    0.206474] 3 locks held by swapper/0/1:\n[    0.206474]  #0: ffffffff9eb597e0 (rcu_tasks.cbs_gbl_lock){....}-{2:2}, at: cblist_init_generic.constprop.0+0x14/0x1f0\n[    0.206478]  #1: ffffffff9eb579c0 (console_lock){+.+.}-{0:0}, at: _printk+0x63/0x7e\n[    0.206482]  #2: ffffffff9ea77780 (console_owner){....}-{0:0}, at: console_emit_next_record.constprop.0+0x111/0x330\n[    0.206485] stack backtrace:\n[    0.206486] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.19.0-00428-g9de1f9c8ca51 #5\n[    0.206488] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-1.fc36 04/01/2014\n[    0.206489] Call Trace:\n[    0.206490]  \u003cTASK\u003e\n[    0.206491]  dump_stack_lvl+0x6a/0x9f\n[    0.206493]  __lock_acquire.cold+0x2d7/0x2fe\n[    0.206496]  ? stack_trace_save+0x46/0x70\n[    0.206497]  lock_acquire+0xd1/0x2f0\n[    0.206499]  ? serial8250_console_write+0x327/0x4a0\n[    0.206500]  ? __lock_acquire+0x5c7/0x2720\n[    0.206502]  _raw_spin_lock_irqsave+0x3d/0x90\n[    0.206504]  ? serial8250_console_write+0x327/0x4a0\n[    0.206506]  serial8250_console_write+0x327/0x4a0\n[    0.206508]  console_emit_next_record.constprop.0+0x180/0x330\n[    0.206511]  console_unlock+0xf7/0x1f0\n[    0.206512]  vprintk_emit+0xf7/0x330\n[    0.206514]  _printk+0x63/0x7e\n[    0.206516]  cblist_init_generic.constprop.0.cold+0x24/0x32\n[    0.206518]  rcu_init_tasks_generic+0x5/0xd9\n[    0.206522]  kernel_init_freeable+0x15b/0x2a2\n[    0.206523]  ? rest_init+0x160/0x160\n[    0.206526]  kernel_init+0x11/0x120\n[    0.206527]  ret_from_fork+0x1f/0x30\n[    0.206530]  \u003c/TASK\u003e\n[    0.207018] cblist_init_generic: Setting shift to 1 and lim to 1.\n\nThis patch moves pr_info() so that it is called without\nrtp-\u003ecbs_gbl_lock locked."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-29T10:50:31.749Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/9027d69221ff96e1356f070f7feb2ff989ae7388"
        },
        {
          "url": "https://git.kernel.org/stable/c/ea9b81c7d9104040b46a84d2303045de267f5557"
        },
        {
          "url": "https://git.kernel.org/stable/c/5fc8cbe4cf0fd34ded8045c385790c3bf04f6785"
        }
      ],
      "title": "rcu-tasks: Avoid pr_info() with spin lock in cblist_init_generic()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53558",
    "datePublished": "2025-10-04T15:17:02.822Z",
    "dateReserved": "2025-10-04T15:14:15.923Z",
    "dateUpdated": "2025-10-29T10:50:31.749Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

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.

Action not permitted

GHSA-449W-38PP-J3QP

CVE-2023-53558 (GCVE-0-2023-53558)

Tags

Sightings

Nomenclature