CVE - CVE-2025-38348

CVE-ID
CVE-2025-38348	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: p54: prevent buffer-overflow in p54_rx_eeprom_readback() Robert Morris reported: \|If a malicious USB device pretends to be an Intersil p54 wifi \|interface and generates an eeprom_readback message with a large \|eeprom->v1.len, p54_rx_eeprom_readback() will copy data from the \|message beyond the end of priv->eeprom. \| \|static void p54_rx_eeprom_readback(struct p54_common priv, \| struct sk_buff skb) \|{ \| struct p54_hdr hdr = (struct p54_hdr ) skb->data; \| struct p54_eeprom_lm86 eeprom = (struct p54_eeprom_lm86 ) hdr->data; \| \| if (priv->fw_var >= 0x509) { \| memcpy(priv->eeprom, eeprom->v2.data, \| le16_to_cpu(eeprom->v2.len)); \| } else { \| memcpy(priv->eeprom, eeprom->v1.data, \| le16_to_cpu(eeprom->v1.len)); \| } \| [...] The eeprom->v{1,2}.len is set by the driver in p54_download_eeprom(). The device is supposed to provide the same length back to the driver. But yes, it's possible (like shown in the report) to alter the value to something that causes a crash/panic due to overrun. This patch addresses the issue by adding the size to the common device context, so p54_rx_eeprom_readback no longer relies on possibly tampered values... That said, it also checks if the "firmware" altered the value and no longer copies them. The one, small saving grace is: Before the driver tries to read the eeprom, it needs to upload >a< firmware. the vendor firmware has a proprietary license and as a reason, it is not present on most distributions by default.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/0e4dc150423b829c35cbcf399481ca11594fc036 URL:https://git.kernel.org/stable/c/0e4dc150423b829c35cbcf399481ca11594fc036 MISC:https://git.kernel.org/stable/c/12134f79e53eb56b0b0b7447fa0c512acf6a8422 URL:https://git.kernel.org/stable/c/12134f79e53eb56b0b0b7447fa0c512acf6a8422 MISC:https://git.kernel.org/stable/c/1f7f8168abe8cbe845ab8bb557228d44784a6b57 URL:https://git.kernel.org/stable/c/1f7f8168abe8cbe845ab8bb557228d44784a6b57 MISC:https://git.kernel.org/stable/c/6d05390d20f110de37d051a3e063ef0a542d01fb URL:https://git.kernel.org/stable/c/6d05390d20f110de37d051a3e063ef0a542d01fb MISC:https://git.kernel.org/stable/c/714afb4c38edd19a057d519c1f9c5d164b43de94 URL:https://git.kernel.org/stable/c/714afb4c38edd19a057d519c1f9c5d164b43de94 MISC:https://git.kernel.org/stable/c/9701f842031b825e2fd5f22d064166f8f13f6e4d URL:https://git.kernel.org/stable/c/9701f842031b825e2fd5f22d064166f8f13f6e4d MISC:https://git.kernel.org/stable/c/da1b9a55ff116cb040528ef664c70a4eec03ae99 URL:https://git.kernel.org/stable/c/da1b9a55ff116cb040528ef664c70a4eec03ae99 MISC:https://git.kernel.org/stable/c/f39b2f8c1549a539846e083790fad396ef6cd802 URL:https://git.kernel.org/stable/c/f39b2f8c1549a539846e083790fad396ef6cd802
Assigning CNA
kernel.org
Date Record Created
20250416	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250416)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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