CVE-2025-38646 Vulnerability Analysis & Exploit Details

CVE-2025-38646
Vulnerability Scoring

Analysis In Progress
Analysis In Progress

Attack Complexity Details

  • Attack Complexity:
    Attack Complexity Analysis In Progress
  • Attack Vector:
    Attack Vector Under Analysis
  • Privileges Required: None
    No authentication is required for exploitation.
  • Scope:
    Impact is confined to the initially vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2025-38646 Details

Status: Awaiting Analysis

Published on: 22 Aug 2025, 16:15 UTC

CVSS Release:

CVE-2025-38646 Vulnerability Summary

CVE-2025-38646: In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: avoid NULL dereference when RX problematic packet on unsupported 6 GHz band With a quite rare chance, RX report might be problematic to make SW think a packet is received on 6 GHz band even if the chip does not support 6 GHz band actually. Since SW won't initialize stuffs for unsupported bands, NULL dereference will happen then in the sequence, rtw89_vif_rx_stats_iter() -> rtw89_core_cancel_6ghz_probe_tx(). So, add a check to avoid it. The following is a crash log for this case. BUG: kernel NULL pointer dereference, address: 0000000000000032 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 1 PID: 1907 Comm: irq/131-rtw89_p Tainted: G U 6.6.56-05896-g89f5fb0eb30b #1 (HASH:1400 4) Hardware name: Google Telith/Telith, BIOS Google_Telith.15217.747.0 11/12/2024 RIP: 0010:rtw89_vif_rx_stats_iter+0xd2/0x310 [rtw89_core] Code: 4c 89 7d c8 48 89 55 c0 49 8d 44 24 02 48 89 45 b8 45 31 ff eb 11 41 c6 45 3a 01 41 b7 01 4d 8b 6d 00 4d 39 f5 74 42 8b 43 10 <41> 33 45 32 0f b7 4b 14 66 41 33 4d 36 0f b7 c9 09 c1 74 d8 4d 85 RSP: 0018:ffff9f3080138ca0 EFLAGS: 00010246 RAX: 00000000b8bf5770 RBX: ffff91b5e8c639c0 RCX: 0000000000000011 RDX: ffff91b582de1be8 RSI: 0000000000000000 RDI: ffff91b5e8c639e6 RBP: ffff9f3080138d00 R08: 0000000000000000 R09: 0000000000000000 R10: ffff91b59de70000 R11: ffffffffc069be50 R12: ffff91b5e8c639e4 R13: 0000000000000000 R14: ffff91b5828020b8 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff91b8efa40000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000032 CR3: 00000002bf838000 CR4: 0000000000750ee0 PKRU: 55555554 Call Trace: <IRQ> ? __die_body+0x68/0xb0 ? page_fault_oops+0x379/0x3e0 ? exc_page_fault+0x4f/0xa0 ? asm_exc_page_fault+0x22/0x30 ? __pfx_rtw89_vif_rx_stats_iter+0x10/0x10 [rtw89_core (HASH:1400 5)] ? rtw89_vif_rx_stats_iter+0xd2/0x310 [rtw89_core (HASH:1400 5)] __iterate_interfaces+0x59/0x110 [mac80211 (HASH:1400 6)] ? __pfx_rtw89_vif_rx_stats_iter+0x10/0x10 [rtw89_core (HASH:1400 5)] ? __pfx_rtw89_vif_rx_stats_iter+0x10/0x10 [rtw89_core (HASH:1400 5)] ieee80211_iterate_active_interfaces_atomic+0x36/0x50 [mac80211 (HASH:1400 6)] rtw89_core_rx_to_mac80211+0xfd/0x1b0 [rtw89_core (HASH:1400 5)] rtw89_core_rx+0x43a/0x980 [rtw89_core (HASH:1400 5)]

Assessing the Risk of CVE-2025-38646

Access Complexity Graph

The exploitability of CVE-2025-38646 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2025-38646

No exploitability data is available for CVE-2025-38646.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2025-38646, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2025-38646, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: None
    CVE-2025-38646 does not compromise confidentiality.
  • Integrity: None
    CVE-2025-38646 does not impact data integrity.
  • Availability: None
    CVE-2025-38646 does not affect system availability.

CVE-2025-38646 References

External References

CWE Common Weakness Enumeration

Unknown

Protect Your Infrastructure against CVE-2025-38646: Combat Critical CVE Threats

Stay updated with real-time CVE vulnerabilities and take action to secure your systems. Enhance your cybersecurity posture with the latest threat intelligence and mitigation techniques. Develop the skills necessary to defend against CVEs and secure critical infrastructures. Join the top cybersecurity professionals safeguarding today's infrastructures.

Other 5 Recently Published CVEs Vulnerabilities

  • CVE-2025-48042 – Incorrect Authorization vulnerability in ash-project ash allows Exploiting Incorrectly Configured Access Control Security Levels. This vulnerabilit...
  • CVE-2025-39734 – In the Linux kernel, the following vulnerability has been resolved: Revert "fs/ntfs3: Replace inode_trylock with inode_lock" This reverts commit ...
  • CVE-2025-39733 – In the Linux kernel, the following vulnerability has been resolved: team: replace team lock with rtnl lock syszbot reports various ordering issue...
  • CVE-2025-39732 – In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix sleeping-in-atomic in ath11k_mac_op_set_bitrate_mask() ath1...
  • CVE-2025-39731 – In the Linux kernel, the following vulnerability has been resolved: f2fs: vm_unmap_ram() may be called from an invalid context When testing F2FS ...