CVE-2026-99250 (GCVE-0-2026-99250)

Vulnerability from cvelistv5 – Published: 2026-11-03 11:18 – Updated: 2026-11-03 11:18
VLAI
Title
printk: Postpone kthread startup
Summary
In the Linux kernel, the following vulnerability has been resolved: printk: Postpone kthread startup There have been various bug reports related to SMP systems hanging on boot. The reports vary but seem to have some overlap with regard to missed IPI's during SMP setup. The reports also show that reverting NBCON console usage allows the bugs to disappear. The NBCON kthreads for console printing are started very early during boot using early_initcall(). Since these kthreads are asynchronously enabling/disabling interrupts during early boot, they may be interfering with early SMP setup on some hardware platforms. Starting the console printing kthreads later has shown to avoid the hanging on systems that could previously reproduce the issue. Postpone kthread starting until after all arch initcalls have completed.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6637 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 76f258bf3f2aae570209319944703a92ac64e29e , < a86bcdd84c8fe7a45f73e12d53fe06fea07d1ceb (git)
Affected: 76f258bf3f2aae570209319944703a92ac64e29e , < 7595bacee48bc30b5021eccf199d704d4e5e5374 (git)
Affected: 76f258bf3f2aae570209319944703a92ac64e29e , < 792acd173da0884f0172c68cb473f42cf93c647e (git)
Affected: 76f258bf3f2aae570209319944703a92ac64e29e , < 5f339c46f153184570f16c8e789c9709b14cbe8b (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.12
Unaffected: 0 , < 6.12 (semver)
Unaffected: 6.12.115 , ≤ 6.12.* (semver)
Unaffected: 6.18.59 , ≤ 6.18.* (semver)
Unaffected: 7.2.13 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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{
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    "dateReserved": "2026-09-25T10:25:14.403Z",
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    "state": "PUBLISHED"
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          }
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        "metrics": {},
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      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-99250.json",
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}



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