Arch Linux update for Linux



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-18445
CWE-ID CWE-119
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Arch Linux
Operating systems & Components / Operating system

Vendor Arch Linux

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Memory corruption

EUVDB-ID: #VU15433

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-18445

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local attacker to gain elevated privileges on the target system.

The vulnerability exists in the adjust_scalar_min_max_vals function, as defined in the kernel/bpf/verifier.c source code file due to boundary error in the BPF verifier. A local attacker can trigger the BPF verifier to mishandle 32-bit right shifts and cause an out-of-bounds memory access condition to access sensitive information, escalate privileges, or cause a DoS condition on the targeted system.

Mitigation

Update the affected package Linux to version 4.18.13.arch1-1.

Vulnerable software versions

Arch Linux: All versions

CPE2.3 External links

https://security.archlinux.org/advisory/ASA-201811-1


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.



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