Description
Various routines for the ppc64 architecture on Linux kernel 2.6 prior to 2.6.2 and 2.4 prior to 2.4.24 do not use the copy_from_user function when copying data from userspace to kernelspace, which crosses security boundaries and allows local users to cause a denial of service.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 3 | kernel +8 | 2.4.21-9.EL | RHSA-2004:017 |
Advisories 1
- RHSA-2004:017 Red Hat Security Advisory: Updated kernel packages available for Red Hat Enterprise Linux 3 Update 1 Red Hat Security Advisories (RHSA) · Jun 26, 2026