SB2025091101 - Red Hat Enterprise Linux 8 update for kernel

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Main Vulnerability Database SB2025091101

SB2025091101 - Red Hat Enterprise Linux 8 update for kernel

Published: September 11, 2025 Updated: February 6, 2026

Security Bulletin ID SB2025091101
Severity
High
Patch available
YES
Number of vulnerabilities 7
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

High 14% Low 86%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 7 secuirty vulnerabilities.


1) Use-after-free (CVE-ID: CVE-2023-2513)

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

The vulnerability exists due to a use-after-free error within the ext4 filesystem in the way it handled the extra inode size for extended attributes. A local user can trigger a use-after-free error and escalate privileges on the system.



2) Use-after-free (CVE-ID: CVE-2025-21759)

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

The vulnerability exists due to a use-after-free error within the mld_send_cr() and igmp6_send() functions in net/ipv6/mcast.c. A local user can escalate privileges on the system.


3) Use-after-free (CVE-ID: CVE-2022-50000)

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

The vulnerability exists due to a use-after-free error within the nf_flow_offload_stats() function in net/netfilter/nf_flow_table_offload.c, within the nf_flow_table_free() function in net/netfilter/nf_flow_table_core.c. A local user can escalate privileges on the system.


4) Buffer overflow (CVE-ID: CVE-2025-38085)

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

The vulnerability exists due to memory corruption within the huge_pmd_unshare() function in mm/hugetlb.c. A local user can perform a denial of service (DoS) attack.


5) Out-of-bounds read (CVE-ID: CVE-2025-38159)

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 rtw_coex_tdma_timer_base() function in drivers/net/wireless/realtek/rtw88/coex.c. A local user can perform a denial of service (DoS) attack.


6) Race condition (CVE-ID: CVE-2025-38352)

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

The vulnerability exists due to a race condition within the run_posix_cpu_timers() function in kernel/time/posix-cpu-timers.c. A local user can escalate privileges on the system.

Note, the vulnerability is being actively exploited in the wild against Android devices.


7) Use-after-free (CVE-ID: CVE-2025-38464)

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

The vulnerability exists due to a use-after-free error within the tipc_topsrv_stop() function in net/tipc/topsrv.c. A local user can escalate privileges on the system.


Remediation

Install update from vendor's website.

References