CVE-2023-53558 — Use of Blocking Code in Single-threaded, Non-blocking Context in Linux

CWE-1322 — Use of Blocking Code in Single-threaded, Non-blocking Context5 documents5 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 98.22%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
LinuxLinux KernelDebian Linux
Timeline
PublishedOct 4

Description

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 …

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages4 packages

▶NVDlinux/linux_kernel5.17 — 6.1.42+1
▶Debianlinux/linux_kernel< 6.1.52-1+2
▶CVEListV5linux/linuxab97152f88a4d580b89f0b7cc3028ffac438216f — 9027d69221ff96e1356f070f7feb2ff989ae7388+3
▶debiandebian/linux< linux 6.1.52-1 (bookworm)

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

2
GHSA
GHSA-449w-38pp-j3qp: 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↗2025-10-04
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OSV
CVE-2023-53558: 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 ca↗2025-10-04
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📋Vendor Advisories

2
Red Hat
kernel: rcu-tasks: Avoid pr_info() with spin lock in cblist_init_generic()↗2025-10-04
▶
Debian
CVE-2023-53558: linux - In the Linux kernel, the following vulnerability has been resolved: rcu-tasks: ...↗2023
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