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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2025-38513 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: zd1211rw: Fix potential NULL pointer dereference in zd_mac_tx_to_dev() There is a potential NULL pointer dereference in zd_mac_tx_to_dev(). For example, the following is possible: T0 T1 zd_mac_tx_to_dev() /* len == skb_queue_len(q) */ while (len > ZD_MAC_MAX_ACK_WAITERS) { filter_ack() spin_lock_irqsave(&q->lock, flags); /* position == skb_queue_len(q) */ for (i=1; i<position; i++) skb = __skb_dequeue(q) if (mac->type == NL80211_IFTYPE_AP) skb = __skb_dequeue(q); spin_unlock_irqrestore(&q->lock, flags); skb_dequeue() -> NULL Since there is a small gap between checking skb queue length and skb being unconditionally dequeued in zd_mac_tx_to_dev(), skb_dequeue() can return NULL. Then the pointer is passed to zd_mac_tx_status() where it is dereferenced. In order to avoid potential NULL pointer dereference due to situations like above, check if skb is not NULL before passing it to zd_mac_tx_status(). Found by Linux Verification Center (linuxtesting.org) with SVACE.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/014c34dc132015c4f918ada4982e952947ac1047 kernel.org Patch 
https://git.kernel.org/stable/c/5420de65efbeb6503bcf1d43451c9df67ad60298 kernel.org Patch 
https://git.kernel.org/stable/c/602b4eb2f25668de15de69860ec99caf65b3684d kernel.org Patch 
https://git.kernel.org/stable/c/74b1ec9f5d627d2bdd5e5b6f3f81c23317657023 kernel.org Patch 
https://git.kernel.org/stable/c/adf08c96b963c7cd7ec1ee1c0c556228d9bedaae kernel.org Patch 
https://git.kernel.org/stable/c/b24f65c184540dfb967479320ecf7e8c2e9220dc kernel.org Patch 
https://git.kernel.org/stable/c/c1958270de947604cc6de05fc96dbba256b49cf0 kernel.org Patch 
https://git.kernel.org/stable/c/fcd9c923b58e86501450b9b442ccc7ce4a8d0fda kernel.org Patch 
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html CVE Mailing List  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html CVE Mailing List  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-476 NULL Pointer Dereference cwe source acceptance level NIST  

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-38513
NVD Published Date:
08/16/2025
NVD Last Modified:
01/07/2026
Source:
kernel.org