Medium 5.5Published May 6, 2026

CVE-2026-43148powerpc/smp: Add check for kcalloc() failure in parse_thread_groups()

Updated under an hour ago (Oct 27, 2026, 4:50 AM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: powerpc/smp: Add check for kcalloc() failure in parse_thread_groups() As kcalloc() may fail, check its return value to avoid a NULL pointer dereference when passing it to of_property_read_u32_array().

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	790a1662d3a26fe9fa5f691386d8fde6bb8b0dc2 builds before 1de31dba19c3cd0c1caf388a286b46df638f0b91; from 790a1662d3a26fe9fa5f691386d8fde6bb8b0dc2 before b265e53d9adfbb5751713185843f7188aa9dd066; 790a1662d3a26fe9fa5f691386d8fde6bb8b0dc2 builds before 9d0ca11258e7b452653d04310addfec1753de1a2; from 790a1662d3a26fe9fa5f691386d8fde6bb8b0dc2 before ca46d2092f307385a7acfb42632056570d6dbbbc; 790a1662d3a26fe9fa5f691386d8fde6bb8b0dc2 builds before 9b85c8f624b0f8cf9b932f5a65dacd56a1f47a72; 790a1662d3a26fe9fa5f691386d8fde6bb8b0dc2 builds before 8b221db0b7d24675e465e98d9326d298025a4e8d; 790a1662d3a26fe9fa5f691386d8fde6bb8b0dc2 builds before 33c1c6d8a28a2761ac74b0380b2563cf546c2a3a	CNA record
linux linux_kernel linux:linux_kernel	from 5.11 before 5.15.202; from 5.16 before 6.1.165; from 6.2 before 6.6.128; from 6.7 before 6.12.75; from 6.13 before 6.18.16; from 6.19 before 6.19.6	NVD

References

References

https://git.kernel.org/stable/c/1de31dba19c3cd0c1caf388a286b46df638f0b91	patch
https://git.kernel.org/stable/c/b265e53d9adfbb5751713185843f7188aa9dd066	patch
https://git.kernel.org/stable/c/9d0ca11258e7b452653d04310addfec1753de1a2	patch
https://git.kernel.org/stable/c/ca46d2092f307385a7acfb42632056570d6dbbbc	patch
https://git.kernel.org/stable/c/9b85c8f624b0f8cf9b932f5a65dacd56a1f47a72	patch
https://git.kernel.org/stable/c/8b221db0b7d24675e465e98d9326d298025a4e8d	patch
https://git.kernel.org/stable/c/33c1c6d8a28a2761ac74b0380b2563cf546c2a3a	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.