SB2025071023 - Ubuntu update for linux-kvm
Published: July 10, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 10 secuirty vulnerabilities.
1) Use-after-free (CVE-ID: CVE-2022-3640)
The vulnerability allows an attacker to compromise the affected system.
The vulnerability exists due to a use-after-free error in the 2cap_conn_del() function in net/bluetooth/l2cap_core.c in Linux kernel. An attacker with physical proximity to device can trigger a use-after-free error and execute arbitrary code on the system.
2) 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.
3) 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.
4) Out-of-bounds write (CVE-ID: CVE-2024-53197)
The vulnerability allows a local user to compromise the affected system.
The vulnerability exists due to an out-of-bounds write error within the snd_usb_create_quirk(), snd_usb_extigy_boot_quirk(), mbox2_setup_48_24_magic() and snd_usb_mbox2_boot_quirk() functions in sound/usb/quirks.c. A local user can trigger an out-of-bounds write and execute arbitrary code on the system.
Note, the vulnerability is being actively exploited against Android devices.
5) Improper error handling (CVE-ID: CVE-2024-50116)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper error handling within the nilfs_forget_buffer() and nilfs_clear_dirty_page() functions in fs/nilfs2/page.c. A local user can perform a denial of service (DoS) attack.
6) Input validation error (CVE-ID: CVE-2024-49958)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the ocfs2_reflink_xattr_inline() function in fs/ocfs2/xattr.c, within the __ocfs2_reflink() function in fs/ocfs2/refcounttree.c. A local user can perform a denial of service (DoS) attack.
7) 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.
8) Use-after-free (CVE-ID: CVE-2022-49909)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the l2cap_data_channel() function in net/bluetooth/l2cap_core.c. A local user can escalate privileges on the system.
9) Use-after-free (CVE-ID: CVE-2021-47576)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the resp_mode_select() function in drivers/scsi/scsi_debug.c. A local user can escalate privileges on the system.
10) NULL pointer dereference (CVE-ID: CVE-2021-47260)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the nfs_get_client() function in fs/nfs/client.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.