1) Memory leak

EUVDB-ID: #VU64079

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2022-1012

CWE-ID: CWE-401 - Improper Release of Memory Before Removing Last Reference ('Memory Leak')

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to insufficient randomization in the net/ipv4/tcp.c when calculating port offsets in Linux kernel cause by small table perturb size. A remote attacker can cause memory leak and gain access to sensitive information.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

kernel (Red Hat package): 4.18.0-372.16.1.el8_6

Red Hat Enterprise Linux Server - TUS: 8.6

Red Hat Virtualization Host: 4

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CPE2.3

• cpe:2.3:o:red_hat:kernel:4.18.0-372.16.1.el8_6:*:*:*:*:red_hat_enterprise_linux:*:*

External links

http://access.redhat.com/errata/RHSA-2022:5819

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

2) Use-after-free

EUVDB-ID: #VU64668

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2022-32250

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free incorrect NFT_STATEFUL_EXPR in net/netfilter/nf_tables_api.c in Linux kernel. A local user with ability to create user/net namespaces can execute arbitrary code with root privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

kernel (Red Hat package): 4.18.0-372.16.1.el8_6

Red Hat Enterprise Linux Server - TUS: 8.6

Red Hat Virtualization Host: 4

---

CPE2.3

• cpe:2.3:o:red_hat:kernel:4.18.0-372.16.1.el8_6:*:*:*:*:red_hat_enterprise_linux:*:*

External links

http://access.redhat.com/errata/RHSA-2022:5819

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?