SB2025112588 - Ubuntu update for linux
Published: November 25, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Resource management error (CVE-ID: CVE-2025-38678)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to resource management error within the nf_tables_updchain() and nft_flowtable_update() functions in net/netfilter/nf_tables_api.c. A local user can perform a denial of service (DoS) attack.
2) Out-of-bounds read (CVE-ID: CVE-2025-38616)
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 tls_rx_rec_wait() function in net/tls/tls_sw.c, within the tls_strp_load_anchor_with_queue() and tls_strp_msg_load() functions in net/tls/tls_strp.c. A local user can perform a denial of service (DoS) attack.
3) Use-after-free (CVE-ID: CVE-2025-38227)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the vidtv_psi_sdt_table_destroy() function in drivers/media/test-drivers/vidtv/vidtv_channel.c. A local user can escalate privileges on the system.
4) Use-after-free (CVE-ID: CVE-2025-21729)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the rtw89_ops_cancel_hw_scan() function in drivers/net/wireless/realtek/rtw89/mac80211.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.