Debian update for linux

Published: 2023-07-06 | Updated: 2024-03-22

Risk	High
Patch available	YES
Number of vulnerabilities	12
CVE-ID	CVE-2023-2124 CVE-2023-2156 CVE-2023-2269 CVE-2023-3090 CVE-2023-31084 CVE-2023-3212 CVE-2023-32250 CVE-2023-32254 CVE-2023-3268 CVE-2023-3269 CVE-2023-3390 CVE-2023-35788
CWE-ID	CWE-125 CWE-617 CWE-667 CWE-787 CWE-833 CWE-476 CWE-362 CWE-416
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #10 is available.
Vulnerable software Subscribe	Debian Linux Operating systems & Components / Operating system linux (Debian package) Operating systems & Components / Operating system package or component
Vendor	Debian

Security Bulletin

This security bulletin contains information about 12 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU75323

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-2023-2124

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

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition within the XFS subsystem in Linux kernel. A local user can trigger an out-of-bounds read error and crash the kernel.

Mitigation

Update linux package to version 6.1.37-1.

Vulnerable software versions

Debian Linux: All versions

linux (Debian package): before 6.1.37-1

External links

http://www.debian.org/security/2023/dsa-5448

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) Reachable Assertion

EUVDB-ID: #VU76392

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-2156

CWE-ID: CWE-617 - Reachable Assertion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a reachable assertion when handling IPv6 RPL protocol. A remote attacker can send specially crafted packets to the system and perform a denial of service (DoS) attack.

Mitigation

Update linux package to version 6.1.37-1.

Vulnerable software versions

Debian Linux: All versions

linux (Debian package): before 6.1.37-1

External links

http://www.debian.org/security/2023/dsa-5448

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

3) Improper locking

EUVDB-ID: #VU77243

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-2023-2269

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

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

The vulnerability exists due to double-locking error in table_clear in drivers/md/dm-ioctl.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Update linux package to version 6.1.37-1.

Vulnerable software versions

Debian Linux: All versions

linux (Debian package): before 6.1.37-1

External links

http://www.debian.org/security/2023/dsa-5448

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) Out-of-bounds write

EUVDB-ID: #VU78010

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-2023-3090

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

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within the ipvlan network driver in Linux kernel. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

Mitigation

Update linux package to version 6.1.37-1.

Vulnerable software versions

Debian Linux: All versions

linux (Debian package): before 6.1.37-1

External links

http://www.debian.org/security/2023/dsa-5448

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) Deadlock

EUVDB-ID: #VU77246

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-2023-31084

CWE-ID: CWE-833 - Deadlock

Exploit availability: No

Description

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

The vulnerability exists due to a deadlock in drivers/media/dvb-core/dvb_frontend.c when a task is in !TASK_RUNNING. A local user can trigger a deadlock and crash the kernel.

Mitigation

Update linux package to version 6.1.37-1.

Vulnerable software versions

Debian Linux: All versions

linux (Debian package): before 6.1.37-1

External links

http://www.debian.org/security/2023/dsa-5448

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) NULL pointer dereference

EUVDB-ID: #VU78009

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-2023-3212

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 gfs2 file system in the Linux kernel. A local user can perform a denial of service (DoS) attack.

Mitigation

Update linux package to version 6.1.37-1.

Vulnerable software versions

Debian Linux: All versions

linux (Debian package): before 6.1.37-1

External links

http://www.debian.org/security/2023/dsa-5448

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) Race condition

EUVDB-ID: #VU77497

Risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-32250

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to a race condition within the fs/ksmbd/connection.c in ksmbd in Linux kernel when processing SMB2_SESSION_SETUP commands. A remote attacker can exploit the race by sending concurrent session setup and logoff request and execute arbitrary code on the system.

Mitigation

Update linux package to version 6.1.37-1.

Vulnerable software versions

Debian Linux: All versions

linux (Debian package): before 6.1.37-1

External links

http://www.debian.org/security/2023/dsa-5448

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

8) Race condition

EUVDB-ID: #VU77498

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-32254

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the system.

The vulnerability exists due to a race condition within fs/ksmbd/mgmt/tree_connect.c in ksmbd in Linux kernel when processing SMB2_TREE_DISCONNECT commands. A remote attacker can trigger a use-after-free error using concurrent smb2 tree disconnect requests and execute arbitrary code on the system.

Mitigation

Update linux package to version 6.1.37-1.

Vulnerable software versions

Debian Linux: All versions

linux (Debian package): before 6.1.37-1

External links

http://www.debian.org/security/2023/dsa-5448

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

9) Out-of-bounds read

EUVDB-ID: #VU78008

Risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-3268

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

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the relay_file_read_start_pos() function in kernel/relay.c in the relayfs. A local user can trigger an out-of-bounds read error and read contents of memory on the system or crash the kernel.

Mitigation

Update linux package to version 6.1.37-1.

Vulnerable software versions

Debian Linux: All versions

linux (Debian package): before 6.1.37-1

External links

http://www.debian.org/security/2023/dsa-5448

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: #VU78002

Risk: Low

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

CVE-ID: CVE-2023-3269

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 error in the handling of stack expansion within the memory management subsystem in the Linux kernel. A local user can trigger a use-after-free error and execute arbitrary code on the system with elevated privileges.

Mitigation

Update linux package to version 6.1.37-1.

Vulnerable software versions

Debian Linux: All versions

linux (Debian package): before 6.1.37-1

External links

http://www.debian.org/security/2023/dsa-5448

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.

11) Use-after-free

EUVDB-ID: #VU78007

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-2023-3390

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 net/netfilter/nf_tables_api.c in the Linux kernel netfilter subsystem. A local user can trigger a use-after-fee error and escalate privileges on the system.

Mitigation

Update linux package to version 6.1.37-1.

Vulnerable software versions

Debian Linux: All versions

linux (Debian package): before 6.1.37-1

External links

http://www.debian.org/security/2023/dsa-5448

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.

12) Out-of-bounds write

EUVDB-ID: #VU77502

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-2023-35788

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

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within the fl_set_geneve_opt() function in net/sched/cls_flower.c in Linux kernel. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

Mitigation

Update linux package to version 6.1.37-1.

Vulnerable software versions

Debian Linux: All versions

linux (Debian package): before 6.1.37-1

External links

http://www.debian.org/security/2023/dsa-5448

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.