generated from sig_core/wiki-template
81 lines
3.3 KiB
Markdown
81 lines
3.3 KiB
Markdown
# Extra package: lkrg
|
|
|
|
## EL9
|
|
|
|
- Version `0.9.8-2.el9_4.security`
|
|
- Based on upstream version `0.9.8`
|
|
|
|
## EL8
|
|
|
|
- Version `0.9.8-2.el8_10.security`
|
|
- Based on upstream version `0.9.8`
|
|
|
|
### Package summary
|
|
|
|
LKRG, or Linux Kernel Runtime Guard, is a kernel module that performs runtime integrity checking of the Linux kernel and detection of security vulnerability exploits against the kernel.
|
|
|
|
More information is available on the [LKRG homepage](https://lkrg.org) and in the documentation files included in the package.
|
|
|
|
### Usage in Rocky Linux
|
|
|
|
Due to EL's kABI stability and the `weak-modules` mechanism, which this package uses, the same binary package of LKRG usually works across different kernel revisions/builds within the same EL minor release (e.g., 9.4). Once there's a new minor release (e.g., 9.4 is upgraded to 9.5), we'll provide a new build of LKRG accordingly.
|
|
|
|
Installing the package does not automatically start LKRG nor enable it to start on system bootup. To start LKRG please use:
|
|
|
|
```
|
|
systemctl start lkrg
|
|
```
|
|
|
|
To enable LKRG on bootup please use:
|
|
|
|
```
|
|
systemctl enable lkrg
|
|
```
|
|
|
|
### Testing and recovery
|
|
|
|
Although the current package passed our own testing (on 9.4 and 8.10), we recommend that you only enable LKRG to start on system bootup after you've tested it for a while to ensure its compatibility with your system. If you nevertheless run into a boot time issue with LKRG later, you can disable it with the `nolkrg` kernel command-line option.
|
|
|
|
### Remote logging
|
|
|
|
LKRG includes a remote kernel message logging capability.
|
|
The corresponding userspace tools are found in the `lkrg-logger` sub-package.
|
|
Documentation is also included in there, in `/usr/share/doc/lkrg-logger/LOGGING`.
|
|
|
|
### Change log
|
|
|
|
```
|
|
* Wed May 22 2024 Solar Designer <solar@openwall.com> 0.9.8-2
|
|
- Pass direct kernel-devel's build path into make
|
|
- Drop "BuildRequires: kernel" as we no longer need /lib/modules/*/build
|
|
- Add "BuildRequires: systemd" for the _unitdir RPM macro (apparently this was
|
|
previously an indirect dependency via the kernel package)
|
|
|
|
* Tue Feb 27 2024 Solar Designer <solar@openwall.com> 0.9.8-1
|
|
- Update to 0.9.8
|
|
- Add logger sub-package
|
|
- Mark the sysctl configuration file config(noreplace)
|
|
- Use "sort -V" to build against the latest installed version of kernel-devel
|
|
|
|
* Wed Nov 8 2023 Solar Designer <solar@openwall.com> 0.9.7-4
|
|
- Add a couple of upstream patches, most notably to fix kINT false positives on
|
|
EL 8.8.
|
|
|
|
* Tue Oct 24 2023 Solar Designer <solar@openwall.com> 0.9.7-3
|
|
- Use weak-modules if available so that on RHEL and its rebuilds the same LKRG
|
|
package build works across different kABI-compatible kernel revisions/builds
|
|
- Drop 32-bit x86 from ExclusiveArch since recent RHEL lacks such kernel-devel
|
|
|
|
* Thu Sep 14 2023 Solar Designer <solar@openwall.com> 0.9.7-2
|
|
- Use kernel build directory corresponding to the kernel-devel package, not to
|
|
the currently running kernel
|
|
- "BuildRequires: kernel" for the /lib/modules/* directory
|
|
- "BuildRequires: elfutils-libelf-devel" to support CONFIG_UNWINDER_ORC=y
|
|
|
|
* Thu Sep 14 2023 Solar Designer <solar@openwall.com> 0.9.7-1
|
|
- Wrote this rough RPM spec file for Red Hat'ish distros, seems to work fine on
|
|
RHEL 7, 8, 9 rebuilds, but is only reliable when there's exactly one
|
|
kernel-devel package installed at build time and it exactly matches the target
|
|
kernel version.
|
|
```
|