CVE-2025-38348 Affecting kernel-source-coco package, versions <6.4.0-15061.28.coco15sp6.1
Threat Intelligence
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Test your applications- Snyk IDSNYK-SLES156-KERNELSOURCECOCO-12099637
- published21 Aug 2025
- disclosed20 Aug 2025
Introduced: 20 Aug 2025
CVE-2025-38348 (opens in a new tab)How to fix?
Upgrade SLES:15.6 kernel-source-coco to version 6.4.0-15061.28.coco15sp6.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-source-coco package and not the kernel-source-coco package as distributed by SLES.
See How to fix? for SLES:15.6 relevant fixed versions and status.
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
- https://www.suse.com/security/cve/CVE-2025-38348.html
- https://bugzilla.suse.com/1246262
- https://git.kernel.org/stable/c/0e4dc150423b829c35cbcf399481ca11594fc036
- https://git.kernel.org/stable/c/12134f79e53eb56b0b0b7447fa0c512acf6a8422
- https://git.kernel.org/stable/c/1f7f8168abe8cbe845ab8bb557228d44784a6b57
- https://git.kernel.org/stable/c/6d05390d20f110de37d051a3e063ef0a542d01fb
- https://git.kernel.org/stable/c/714afb4c38edd19a057d519c1f9c5d164b43de94
- https://git.kernel.org/stable/c/9701f842031b825e2fd5f22d064166f8f13f6e4d
- https://git.kernel.org/stable/c/da1b9a55ff116cb040528ef664c70a4eec03ae99
- https://git.kernel.org/stable/c/f39b2f8c1549a539846e083790fad396ef6cd802