#VU95052 Improper neutralization of directives in statically saved code (\'static code injection\') in Linux kernel - CVE-2024-42084
Vulnerability identifier: #VU95052
Vulnerability risk: Low
CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID:
CWE-ID:
CWE-96
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
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.
Mitigation
Install update from vendor's repository.
Vulnerable software versions
Linux kernel: All versions
External links
https://git.kernel.org/stable/c/c329760749b5419769e57cb2be80955d2805f9c9
https://git.kernel.org/stable/c/f531d4bc6c5588d713359e42ed65e46816d841d8
https://git.kernel.org/stable/c/84bf6b64a1a0dfc6de7e1b1c776d58d608e7865a
https://git.kernel.org/stable/c/dbb226d81cd02cee140139c2369791e6f61f2007
https://git.kernel.org/stable/c/5ae6af68410bdad6181ec82104bb9985a7a6a0fa
https://git.kernel.org/stable/c/836359247b0403e0634bfbc83e5bb8063fad287a
https://git.kernel.org/stable/c/930a4c369f74da26816eaaa71b5888d29b759c27
https://git.kernel.org/stable/c/4b8e88e563b5f666446d002ad0dc1e6e8e7102b0
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
