Static Code Injection Affecting kernel-rt-debug-kvm package, versions <0:4.18.0-553.22.1.rt7.363.el8_10
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Test your applications- Snyk ID SNYK-CENTOS8-KERNELRTDEBUGKVM-7602357
- published 5 Aug 2024
- disclosed 29 Jul 2024
Introduced: 29 Jul 2024
CVE-2024-42084 Open this link in a new tabHow to fix?
Upgrade Centos:8 kernel-rt-debug-kvm to version 0:4.18.0-553.22.1.rt7.363.el8_10 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug-kvm package and not the kernel-rt-debug-kvm package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
ftruncate: pass a signed offset
The old ftruncate() syscall, using the 32-bit off_t misses a sign extension when called in compat mode on 64-bit architectures. As a result, passing a negative length accidentally succeeds in truncating to file size between 2GiB and 4GiB.
Changing the type of the compat syscall to the signed compat_off_t changes the behavior so it instead returns -EINVAL.
The native entry point, the truncate() syscall and the corresponding loff_t based variants are all correct already and do not suffer from this mistake.
References
- https://access.redhat.com/security/cve/CVE-2024-42084
- https://git.kernel.org/stable/c/4b8e88e563b5f666446d002ad0dc1e6e8e7102b0
- https://git.kernel.org/stable/c/5ae6af68410bdad6181ec82104bb9985a7a6a0fa
- https://git.kernel.org/stable/c/836359247b0403e0634bfbc83e5bb8063fad287a
- https://git.kernel.org/stable/c/84bf6b64a1a0dfc6de7e1b1c776d58d608e7865a
- https://git.kernel.org/stable/c/930a4c369f74da26816eaaa71b5888d29b759c27
- https://git.kernel.org/stable/c/c329760749b5419769e57cb2be80955d2805f9c9
- https://git.kernel.org/stable/c/dbb226d81cd02cee140139c2369791e6f61f2007
- https://git.kernel.org/stable/c/f531d4bc6c5588d713359e42ed65e46816d841d8