Ubuntu update for linux-gcp

Published: 2023-12-06 | Updated: 2024-02-27

Risk	Medium
Patch available	YES
Number of vulnerabilities	11
CVE-ID	CVE-2023-31085 CVE-2023-39189 CVE-2023-4244 CVE-2023-42754 CVE-2023-45898 CVE-2023-5090 CVE-2023-5158 CVE-2023-5178 CVE-2023-5345 CVE-2023-5633 CVE-2023-5717
CWE-ID	CWE-369 CWE-125 CWE-416 CWE-476 CWE-755 CWE-20 CWE-787
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #8 is available.
Vulnerable software Subscribe	Ubuntu Operating systems & Components / Operating system linux-image-gcp (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-6.5.0-1010-gcp (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 11 vulnerabilities.

1) Division by zero

EUVDB-ID: #VU82660

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/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-2023-31085

CWE-ID: CWE-369 - Divide By Zero

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a divide by zero error within the drivers/mtd/ubi/cdev.c driver. A local user can perform a denial of service (DoS) attack.

Mitigation

Update the affected package linux-gcp to the latest version.

Vulnerable software versions

Ubuntu: 23.10

linux-image-gcp (Ubuntu package): before 6.5.0.1010.10

linux-image-6.5.0-1010-gcp (Ubuntu package): before 6.5.0-1010.10

External links

http://ubuntu.com/security/notices/USN-6537-1

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.

2) Out-of-bounds read

EUVDB-ID: #VU82659

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-39189

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition within the nfnl_osf_add_callback() function in Linux kernel Netfilter. A local user with CAP_NET_ADMIN capability can trigger an out-of-bounds read error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-gcp to the latest version.

Vulnerable software versions

Ubuntu: 23.10

linux-image-gcp (Ubuntu package): before 6.5.0.1010.10

linux-image-6.5.0-1010-gcp (Ubuntu package): before 6.5.0-1010.10

External links

http://ubuntu.com/security/notices/USN-6537-1

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.

3) Use-after-free

EUVDB-ID: #VU82306

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-4244

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error within the Linux kernel netfilter: nf_tables component. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-gcp to the latest version.

Vulnerable software versions

Ubuntu: 23.10

linux-image-gcp (Ubuntu package): before 6.5.0.1010.10

linux-image-6.5.0-1010-gcp (Ubuntu package): before 6.5.0-1010.10

External links

http://ubuntu.com/security/notices/USN-6537-1

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.

4) NULL pointer dereference

EUVDB-ID: #VU81452

Risk: Low

CVSSv3.1: 3.9 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-42754

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error within the ipv4_send_dest_unreach() function in net/ipv4/route.c. A local user with CAP_NET_ADMIN permissions can perform a denial of service (DoS) attack.

Mitigation

Update the affected package linux-gcp to the latest version.

Vulnerable software versions

Ubuntu: 23.10

linux-image-gcp (Ubuntu package): before 6.5.0.1010.10

linux-image-6.5.0-1010-gcp (Ubuntu package): before 6.5.0-1010.10

External links

http://ubuntu.com/security/notices/USN-6537-1

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.

5) Use-after-free

EUVDB-ID: #VU82689

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-45898

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error in fs/ext4/extents_status.c. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-gcp to the latest version.

Vulnerable software versions

Ubuntu: 23.10

linux-image-gcp (Ubuntu package): before 6.5.0.1010.10

linux-image-6.5.0-1010-gcp (Ubuntu package): before 6.5.0-1010.10

External links

http://ubuntu.com/security/notices/USN-6537-1

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.

6) Improper handling of exceptional conditions

EUVDB-ID: #VU83383

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/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-2023-5090

CWE-ID: CWE-755 - Improper Handling of Exceptional Conditions

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper handling of errors within the svm_set_x2apic_msr_interception() function in KVM. A local user can send specially crafted input and perform a denial of service (DoS) attack.

Mitigation

Update the affected package linux-gcp to the latest version.

Vulnerable software versions

Ubuntu: 23.10

linux-image-gcp (Ubuntu package): before 6.5.0.1010.10

linux-image-6.5.0-1010-gcp (Ubuntu package): before 6.5.0-1010.10

External links

http://ubuntu.com/security/notices/USN-6537-1

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.

7) Input validation error

EUVDB-ID: #VU83440

Risk: Medium

CVSSv3.1: 5.9 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-5158

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input within the vringh_kiov_advance() function in drivers/vhost/vringh.c in the host side of a virtio ring. A malicious guest can crash the host OS via zero length descriptor.

Mitigation

Update the affected package linux-gcp to the latest version.

Vulnerable software versions

Ubuntu: 23.10

linux-image-gcp (Ubuntu package): before 6.5.0.1010.10

linux-image-6.5.0-1010-gcp (Ubuntu package): before 6.5.0-1010.10

External links

http://ubuntu.com/security/notices/USN-6537-1

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

8) Use-after-free

EUVDB-ID: #VU82658

Risk: Low

CVSSv3.1: 7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2023-5178

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes

Description

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

The vulnerability exists due to a use-after-free error within the drivers/nvme/target/tcp.c in nvmet_tcp_free_crypto due to a logical bug in the NVMe-oF/TCP subsystem in the Linux kernel. A local authenticated user can trigger a use-after-free error and escalate privileges on the system.

Mitigation

Update the affected package linux-gcp to the latest version.

Vulnerable software versions

Ubuntu: 23.10

linux-image-gcp (Ubuntu package): before 6.5.0.1010.10

linux-image-6.5.0-1010-gcp (Ubuntu package): before 6.5.0-1010.10

External links

http://ubuntu.com/security/notices/USN-6537-1

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. However, proof of concept for this vulnerability is available.

9) Use-after-free

EUVDB-ID: #VU81691

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-5345

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error within the smb3_fs_context_parse_param() function in fs/smb/client component. A remote attacker can execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-gcp to the latest version.

Vulnerable software versions

Ubuntu: 23.10

linux-image-gcp (Ubuntu package): before 6.5.0.1010.10

linux-image-6.5.0-1010-gcp (Ubuntu package): before 6.5.0-1010.10

External links

http://ubuntu.com/security/notices/USN-6537-1

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.

10) Use-after-free

EUVDB-ID: #VU83384

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-5633

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error when running inside a VMware guest with 3D acceleration enabled. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-gcp to the latest version.

Vulnerable software versions

Ubuntu: 23.10

linux-image-gcp (Ubuntu package): before 6.5.0.1010.10

linux-image-6.5.0-1010-gcp (Ubuntu package): before 6.5.0-1010.10

External links

http://ubuntu.com/security/notices/USN-6537-1

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.

11) Out-of-bounds write

EUVDB-ID: #VU83311

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-5717

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability local user to escalate privileges on the system.

The vulnerability exists due to a boundary error in the Linux kernel's Linux Kernel Performance Events (perf) component. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-gcp to the latest version.

Vulnerable software versions

Ubuntu: 23.10

linux-image-gcp (Ubuntu package): before 6.5.0.1010.10

linux-image-6.5.0-1010-gcp (Ubuntu package): before 6.5.0-1010.10

External links

http://ubuntu.com/security/notices/USN-6537-1

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.