AZL-100623
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-100623.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-100623
- Upstream
- Published
- 2026-09-11T20:20:07Z
- Modified
- 2026-09-12T14:15:28Z
- Summary
- CVE-2026-89765 affecting package kernel 6.6.150.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
timers/itimer: Zero-init old itimerval before copy to userspace
On native sparc64, struct __kernel_old_timeval contains a four-byte hole after tv_usec because tv_sec is 64-bit while __kernel_suseconds_t is 32-bit. put_itimerval() fills only the named fields in a stack-allocated __kernel_old_itimerval and copies the entire object to userspace, so getitimer() can expose the two padding holes.
Zero-initialize the aggregate before assigning the fields so implicit padding is deterministic before it crosses the user/kernel boundary.
- References