KVM: s390/diag: fix racy access of physical cpu number in diag 9c handler
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 5.15.121, 6.1.39, 6.4.4
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
From 87e28a15c42cc592009c32a8c20e5789059027c2 · fixed in a9ccf140a2a03a0ae82be4bdfbdd17bdaea72ff5; From 87e28a15c42cc592009c32a8c20e5789059027c2 · fixed in 86bfb18bad60fc468e5f112cbbd918462a8dd435; From 87e28a15c42cc592009c32a8c20e5789059027c2 · fixed in dc7e0192c470a53d847c79a2796f9ac429477a26; From 87e28a15c42cc592009c32a8c20e5789059027c2 · fixed in 0bc380beb78aa352eadbc21d934dd9606fcee808
- Linux Linux
5.13
- KernelLinux
From 5.13.0 · fixed in 5.15.121; From 5.16.0 · fixed in 6.1.39; From 6.2.0 · fixed in 6.4.4