vulnerability
Ubuntu: (Multiple Advisories) (CVE-2024-58078): Linux kernel vulnerabilities
Severity | CVSS | Published | Added | Modified |
---|---|---|---|---|
5 | (AV:L/AC:L/Au:S/C:N/I:N/A:C) | Mar 6, 2025 | May 21, 2025 | May 29, 2025 |
Description
In the Linux kernel, the following vulnerability has been resolved:
misc: misc_minor_alloc to use ida for all dynamic/misc dynamic minors
misc_minor_alloc was allocating id using ida for minor only in case of
MISC_DYNAMIC_MINOR but misc_minor_free was always freeing ids
using ida_free causing a mismatch and following warn:
> > WARNING: CPU: 0 PID: 159 at lib/idr.c:525 ida_free+0x3e0/0x41f
> > ida_free called for id=127 which is not allocated.
> >
...
> > [] ida_free+0x3e0/0x41f
> > [] misc_minor_free+0x3e/0xbc
> > [] misc_deregister+0x171/0x1b3
misc_minor_alloc is changed to allocate id from ida for all minors
falling in the range of dynamic/ misc dynamic minors
Solution(s)

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