CVE-2023-54246
published 2025-12-30CVE-2023-54246: In the Linux kernel, the following vulnerability has been resolved: rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle() The…
PriorityP420low2.5
EPSS
0.18%
7.2th percentile
In the Linux kernel, the following vulnerability has been resolved:
rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle()
The rcuscale.holdoff module parameter can be used to delay the start
of rcu_scale_writer() kthread. However, the hung-task timeout will
trigger when the timeout specified by rcuscale.holdoff is greater than
hung_task_timeout_secs:
runqemu kvm nographic slirp qemuparams="-smp 4 -m 2048M"
bootparams="rcuscale.shutdown=0 rcuscale.holdoff=300"
[ 247.071753] INFO: task rcu_scale_write:59 blocked for more than 122 seconds.
[ 247.072529] Not tainted 6.4.0-rc1-00134-gb9ed6de8d4ff #7
[ 247.073400] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 247.074331] task:rcu_scale_write state:D stack:30144 pid:59 ppid:2 flags:0x00004000
[ 247.075346] Call Trace:
[ 247.075660]
[ 247.075965] __schedule+0x635/0x1280
[ 247.076448] ? __pfx___schedule+0x10/0x10
[ 247.076967] ? schedule_timeout+0x2dc/0x4d0
[ 247.077471] ? __pfx_lock_release+0x10/0x10
[ 247.078018] ? enqueue_timer+0xe2/0x220
[ 247.078522] schedule+0x84/0x120
[ 247.078957] schedule_timeout+0x2e1/0x4d0
[ 247.079447] ? __pfx_schedule_timeout+0x10/0x10
[ 247.080032] ? __pfx_rcu_scale_writer+0x10/0x10
[ 247.080591] ? __pfx_process_timeout+0x10/0x10
[ 247.081163] ? __pfx_sched_set_fifo_low+0x10/0x10
[ 247.081760] ? __pfx_rcu_scale_writer+0x10/0x10
[ 247.082287] rcu_scale_writer+0x6b1/0x7f0
[ 247.082773] ? mark_held_locks+0x29/0xa0
[ 247.083252] ? __pfx_rcu_scale_writer+0x10/0x10
[ 247.083865] ? __pfx_rcu_scale_writer+0x10/0x10
[ 247.084412] kthread+0x179/0x1c0
[ 247.084759] ? __pfx_kthread+0x10/0x10
[ 247.085098] ret_from_fork+0x2c/0x50
[ 247.085433]
This commit therefore replaces schedule_timeout_uninterruptible() with
schedule_timeout_idle().
Affected
15 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.55-1 (bookworm) | linux 6.1.55-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= df37e66bfdbb57e8cae7dbf39a0c66b1b8701338 < 55887adc76e19aec9763186e2c1d0a3481d20e96 | 55887adc76e19aec9763186e2c1d0a3481d20e96 |
| linux | linux | >= df37e66bfdbb57e8cae7dbf39a0c66b1b8701338 < 4f03fba096bfded90e0d71eba8839a46922164d1 | 4f03fba096bfded90e0d71eba8839a46922164d1 |
| linux | linux | >= df37e66bfdbb57e8cae7dbf39a0c66b1b8701338 < 83ed0cdb6ae0383dd14b02375c353773836884ed | 83ed0cdb6ae0383dd14b02375c353773836884ed |
| linux | linux | >= df37e66bfdbb57e8cae7dbf39a0c66b1b8701338 < 9416dccb31fdb190d25d57e97674f232651f6560 | 9416dccb31fdb190d25d57e97674f232651f6560 |
| linux | linux | >= df37e66bfdbb57e8cae7dbf39a0c66b1b8701338 < e60c122a1614b4f65b29a7bef9d83b9fd30e937a | e60c122a1614b4f65b29a7bef9d83b9fd30e937a |
| linux | linux_kernel | >= 0 < 5.10.197-1 | 5.10.197-1 |
| linux | linux_kernel | >= 0 < 6.1.55-1 | 6.1.55-1 |
| linux | linux_kernel | >= 0 < 6.5.6-1 | 6.5.6-1 |
| linux | linux_kernel | >= 0 < 6.5.6-1 | 6.5.6-1 |
| linux | linux_kernel | >= 4.7.0 < 5.10.197 | 5.10.197 |
| linux | linux_kernel | >= 5.11.0 < 5.15.133 | 5.15.133 |
| linux | linux_kernel | >= 5.16.0 < 6.1.55 | 6.1.55 |
| linux | linux_kernel | >= 6.2.0 < 6.5.5 | 6.5.5 |
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Red Hat
kernel: rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle()
vendor_redhat·2025-12-30·CVSS 2.5
CVE-2023-54246 [LOW] CWE-628 kernel: rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle()
kernel: rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle()
In the Linux kernel, the following vulnerability has been resolved:
rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle()
The rcuscale.holdoff module parameter can be used to delay the start
of rcu_scale_writer() kthread. However, the hung-task timeout will
trigger when the timeout specified by rcuscale.holdoff is greater than
hung_task_timeout_secs:
runqemu kvm nographic slirp qemuparams="-smp 4 -m 2048M"
bootparams="rcuscale.shutdown=0 rcuscale.holdoff=300"
[ 247.071753] INFO: task rcu_scale_write:59 blocked for more than 122 seconds.
[ 247.072529] Not tainted 6.4.0-rc1-00134-gb9ed6de8d4ff #7
[ 247.073400] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this mess
Debian
CVE-2023-54246: linux - In the Linux kernel, the following vulnerability has been resolved: rcuscale: M...
vendor_debian·2023
CVE-2023-54246 CVE-2023-54246: linux - In the Linux kernel, the following vulnerability has been resolved: rcuscale: M...
In the Linux kernel, the following vulnerability has been resolved: rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle() The rcuscale.holdoff module parameter can be used to delay the start of rcu_scale_writer() kthread. However, the hung-task timeout will trigger when the timeout specified by rcuscale.holdoff is greater than hung_task_timeout_secs: runqemu kvm nographic slirp qemuparams="-smp 4 -m 2048M" bootparams="rcuscale.shutdown=0 rcuscale.holdoff=300" [ 247.071753] INFO: task rcu_scale_write:59 blocked for more than 122 seconds. [ 247.072529] Not tainted 6.4.0-rc1-00134-gb9ed6de8d4ff #7 [ 247.073400] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 247.074331] task:rcu_scale_write state:D stack:30144 pid:59 ppid:2 flags:0x0000400
OSV
CVE-2023-54246: In the Linux kernel, the following vulnerability has been resolved: rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle() Th
osv·2025-12-30
CVE-2023-54246 CVE-2023-54246: In the Linux kernel, the following vulnerability has been resolved: rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle() Th
In the Linux kernel, the following vulnerability has been resolved: rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle() The rcuscale.holdoff module parameter can be used to delay the start of rcu_scale_writer() kthread. However, the hung-task timeout will trigger when the timeout specified by rcuscale.holdoff is greater than hung_task_timeout_secs: runqemu kvm nographic slirp qemuparams="-smp 4 -m 2048M" bootparams="rcuscale.shutdown=0 rcuscale.holdoff=300" [ 247.071753] INFO: task rcu_scale_write:59 blocked for more than 122 seconds. [ 247.072529] Not tainted 6.4.0-rc1-00134-gb9ed6de8d4ff #7 [ 247.073400] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 247.074331] task:rcu_scale_write state:D stack:30144 pid:59 ppid:2 flags:0x0000400
GHSA
GHSA-qqm3-hrh7-jh6j: In the Linux kernel, the following vulnerability has been resolved:
rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle()
ghsa_unreviewed·2025-12-30
CVE-2023-54246 GHSA-qqm3-hrh7-jh6j: In the Linux kernel, the following vulnerability has been resolved:
rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle()
In the Linux kernel, the following vulnerability has been resolved:
rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle()
The rcuscale.holdoff module parameter can be used to delay the start
of rcu_scale_writer() kthread. However, the hung-task timeout will
trigger when the timeout specified by rcuscale.holdoff is greater than
hung_task_timeout_secs:
runqemu kvm nographic slirp qemuparams="-smp 4 -m 2048M"
bootparams="rcuscale.shutdown=0 rcuscale.holdoff=300"
[ 247.071753] INFO: task rcu_scale_write:59 blocked for more than 122 seconds.
[ 247.072529] Not tainted 6.4.0-rc1-00134-gb9ed6de8d4ff #7
[ 247.073400] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 247.074331] task:rcu_scale_write state:D stack:30144 pid:59 ppid:2 flags:0x000
OSV
rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle()
osv·2025-12-30
CVE-2023-54246 rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle()
rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle()
In the Linux kernel, the following vulnerability has been resolved:
rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle()
The rcuscale.holdoff module parameter can be used to delay the start
of rcu_scale_writer() kthread. However, the hung-task timeout will
trigger when the timeout specified by rcuscale.holdoff is greater than
hung_task_timeout_secs:
runqemu kvm nographic slirp qemuparams="-smp 4 -m 2048M"
bootparams="rcuscale.shutdown=0 rcuscale.holdoff=300"
[ 247.071753] INFO: task rcu_scale_write:59 blocked for more than 122 seconds.
[ 247.072529] Not tainted 6.4.0-rc1-00134-gb9ed6de8d4ff #7
[ 247.073400] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2023-54246 kernel: rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle()
bugzilla·2025-12-30
CVE-2023-54246 [LOW] CVE-2023-54246 kernel: rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle()
CVE-2023-54246 kernel: rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle()
In the Linux kernel, the following vulnerability has been resolved:
rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle()
The rcuscale.holdoff module parameter can be used to delay the start
of rcu_scale_writer() kthread. However, the hung-task timeout will
trigger when the timeout specified by rcuscale.holdoff is greater than
hung_task_timeout_secs:
runqemu kvm nographic slirp qemuparams="-smp 4 -m 2048M"
bootparams="rcuscale.shutdown=0 rcuscale.holdoff=300"
[ 247.071753] INFO: task rcu_scale_write:59 blocked for more than 122 seconds.
[ 247.072529] Not tainted 6.4.0-rc1-00134-gb9ed6de8d4ff #7
[ 247.073400] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
Wiz
CVE-2023-54246 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz
CVE-2023-54246 CVE-2023-54246 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2023-54246 :
Linux Kernel vulnerability analysis and mitigation
In the Linux kernel, the following vulnerability has been resolved:
rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle()
The rcuscale.holdoff module parameter can be used to delay the start
of rcu_scale_writer() kthread. However, the hung-task timeout will
trigger when the timeout specified by rcuscale.holdoff is greater than
hung_task_timeout_secs:
runqemu kvm nographic slirp qemuparams="-smp 4 -m 2048M"
bootparams="rcuscale.shutdown=0 rcuscale.holdoff=300"
[ 247.071753] INFO: task rcu_scale_write:59 blocked for more than 122 seconds.
[ 247.072529] Not tainted 6.4.0-rc1-00134-gb9ed6de8d4ff #7
[ 247.073400] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 247.0
https://git.kernel.org/stable/c/4f03fba096bfded90e0d71eba8839a46922164d1https://git.kernel.org/stable/c/55887adc76e19aec9763186e2c1d0a3481d20e96https://git.kernel.org/stable/c/83ed0cdb6ae0383dd14b02375c353773836884edhttps://git.kernel.org/stable/c/9416dccb31fdb190d25d57e97674f232651f6560https://git.kernel.org/stable/c/e60c122a1614b4f65b29a7bef9d83b9fd30e937a
2025-12-30
Published