Ubuntu update for linux-ibm-5.15



Risk Low
Patch available YES
Number of vulnerabilities 9
CVE-ID CVE-2025-38001
CVE-2025-38000
CVE-2025-37997
CVE-2025-37932
CVE-2025-37890
CVE-2025-37798
CVE-2024-53051
CVE-2024-50047
CVE-2024-46787
CWE-ID CWE-416
CWE-667
CWE-399
CWE-20
CWE-476
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Ubuntu
Operating systems & Components / Operating system

linux-ibm-5.15 (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 9 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU110681

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-2025-38001

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 cl_in_el_or_vttree(), hfsc_change_class() and hfsc_enqueue() functions in net/sched/sch_hfsc.c. A local user can escalate privileges on the system.

Mitigation

Update the affected package linux-ibm-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-ibm-5.15 (Ubuntu package): before 5.15.0-1029.29

CPE2.3 External links

https://ubuntu.com/security/notices/USN-7608-5


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) Use-after-free

EUVDB-ID: #VU110683

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-2025-38000

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 hfsc_enqueue() function in net/sched/sch_hfsc.c. A local user can escalate privileges on the system.

Mitigation

Update the affected package linux-ibm-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-ibm-5.15 (Ubuntu package): before 5.15.0-1029.29

CPE2.3 External links

https://ubuntu.com/security/notices/USN-7608-5


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) Improper locking

EUVDB-ID: #VU109954

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-37997

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

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

The vulnerability exists due to improper locking within the net/netfilter/ipset/ip_set_hash_gen.h. A local user can perform a denial of service (DoS) attack.

Mitigation

Update the affected package linux-ibm-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-ibm-5.15 (Ubuntu package): before 5.15.0-1029.29

CPE2.3 External links

https://ubuntu.com/security/notices/USN-7608-5


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) Resource management error

EUVDB-ID: #VU109572

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-37932

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

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

The vulnerability exists due to resource management error within the htb_qlen_notify() function in net/sched/sch_htb.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Update the affected package linux-ibm-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-ibm-5.15 (Ubuntu package): before 5.15.0-1029.29

CPE2.3 External links

https://ubuntu.com/security/notices/USN-7608-5


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: #VU109282

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-2025-37890

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 hfsc_enqueue() function in net/sched/sch_hfsc.c. A local user can escalate privileges on the system.

Mitigation

Update the affected package linux-ibm-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-ibm-5.15 (Ubuntu package): before 5.15.0-1029.29

CPE2.3 External links

https://ubuntu.com/security/notices/USN-7608-5


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) Input validation error

EUVDB-ID: #VU108390

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-37798

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to improper input validation within the qdisc_bstats_update() function in net/sched/sch_fq_codel.c, within the codel_qdisc_dequeue() function in net/sched/sch_codel.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Update the affected package linux-ibm-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-ibm-5.15 (Ubuntu package): before 5.15.0-1029.29

CPE2.3 External links

https://ubuntu.com/security/notices/USN-7608-5


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) NULL pointer dereference

EUVDB-ID: #VU100710

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-53051

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 NULL pointer dereference within the intel_hdcp_read_valid_bksv() function in drivers/gpu/drm/i915/display/intel_hdcp.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Update the affected package linux-ibm-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-ibm-5.15 (Ubuntu package): before 5.15.0-1029.29

CPE2.3 External links

https://ubuntu.com/security/notices/USN-7608-5


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.

8) Improper locking

EUVDB-ID: #VU98995

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-50047

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

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

The vulnerability exists due to improper locking within the SMB2_negotiate() function in fs/smb/client/smb2pdu.c, within the smb2_get_enc_key(), crypt_message(), smb3_init_transform_rq() and decrypt_raw_data() functions in fs/smb/client/smb2ops.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Update the affected package linux-ibm-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-ibm-5.15 (Ubuntu package): before 5.15.0-1029.29

CPE2.3 External links

https://ubuntu.com/security/notices/USN-7608-5


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.

9) Improper locking

EUVDB-ID: #VU97536

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-46787

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

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

The vulnerability exists due to improper locking within the pmdp_get_lockless() function in mm/userfaultfd.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Update the affected package linux-ibm-5.15 to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-ibm-5.15 (Ubuntu package): before 5.15.0-1029.29

CPE2.3 External links

https://ubuntu.com/security/notices/USN-7608-5


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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