SB2025072834 - Ubuntu update for linux
Published: July 28, 2025 Updated: August 29, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 11 secuirty vulnerabilities.
1) Input validation error (CVE-ID: CVE-2025-38177)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the eltree_insert() and hfsc_qlen_notify() functions in net/sched/sch_hfsc.c. A local user can perform a denial of service (DoS) attack.
2) Use-after-free (CVE-ID: CVE-2025-38001)
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.
3) Use-after-free (CVE-ID: CVE-2025-38000)
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.
4) Improper locking (CVE-ID: CVE-2025-37997)
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.
5) Resource management error (CVE-ID: CVE-2025-37932)
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.
6) Use-after-free (CVE-ID: CVE-2025-37890)
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.
7) Input validation error (CVE-ID: CVE-2025-37798)
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.
8) Out-of-bounds read (CVE-ID: CVE-2024-56662)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to an out-of-bounds read error within the acpi_nfit_ctl() function in drivers/acpi/nfit/core.c. A local user can perform a denial of service (DoS) attack.
9) NULL pointer dereference (CVE-ID: CVE-2024-53051)
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.
10) Improper locking (CVE-ID: CVE-2024-50047)
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.
11) Improper locking (CVE-ID: CVE-2024-46787)
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.
Remediation
Install update from vendor's website.