Memory leak in Linux kernel net
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-47426 |
| CWE-ID | CWE-401 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Linux kernel Operating systems & Components / Operating system |
| Vendor | Linux Foundation |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Memory leak
EUVDB-ID: #VU89972
Risk: Low
CVSSv3.1: 4.8 [AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-47426
CWE-ID:
CWE-401 - Missing release of memory after effective lifetime
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the bpf_int_jit_compile() function in arch/s390/net/bpf_jit_comp.c. A local user can perform a denial of service (DoS) attack.
MitigationInstall update from vendor's website.
Vulnerable software versionsLinux kernel: All versions
CPE2.3http://git.kernel.org/stable/c/a326f9c01cfbee4450ae49ce618ae6cbc0f76842
http://git.kernel.org/stable/c/29fdb11ca88d3c490a3d56f0dc77eb9444d086be
http://git.kernel.org/stable/c/d590a410e472417a22336c7c37685bfb38e801f2
http://git.kernel.org/stable/c/686cb8b9f6b46787f035afe8fbd132a74e6b1bdd
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.
