CVE-2023-53205KVM: s390/diag: fix racy access of physical cpu number in diag 9c handler
Updated under an hour ago ()
Does this affect you?
It affects Linux and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
In the Linux kernel, the following vulnerability has been resolved: KVM: s390/diag: fix racy access of physical cpu number in diag 9c handler We do check for target CPU == -1, but this might change at the time we are going to use it. Hold the physical target CPU in a local variable to avoid out-of-bound accesses to the cpu arrays.
- CVSS
- 7.3 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/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
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
Linux Linux linux:linux (from the name) | from 87e28a15c42cc592009c32a8c20e5789059027c2 before a9ccf140a2a03a0ae82be4bdfbdd17bdaea72ff5; 87e28a15c42cc592009c32a8c20e5789059027c2 builds before 86bfb18bad60fc468e5f112cbbd918462a8dd435; from 87e28a15c42cc592009c32a8c20e5789059027c2 before dc7e0192c470a53d847c79a2796f9ac429477a26; 87e28a15c42cc592009c32a8c20e5789059027c2 builds before 0bc380beb78aa352eadbc21d934dd9606fcee808 | CNA record |
linux linux_kernel linux:linux_kernel | from 5.13 before 5.15.121; from 5.16 before 6.1.39; from 6.2 before 6.4.4 | NVD |
References
- https://git.kernel.org/stable/c/a9ccf140a2a03a0ae82be4bdfbdd17bdaea72ff5patch
- https://git.kernel.org/stable/c/86bfb18bad60fc468e5f112cbbd918462a8dd435patch
- https://git.kernel.org/stable/c/dc7e0192c470a53d847c79a2796f9ac429477a26patch
- https://git.kernel.org/stable/c/0bc380beb78aa352eadbc21d934dd9606fcee808patch
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.