CVE-2024-26600: Linux vulnerability

CVE-2024-26600: phy: ti: phy-omap-usb2: Fix NULL pointer dereference for SRP

In the Linux kernel, the following vulnerability has been resolved: phy: ti: phy-omap-usb2: Fix NULL pointer dereference for SRP If the external phy working together with phy-omap-usb2 does not implement send_srp(), we may still attempt to call it. This can happen on an idle Ethernet gadget triggering a wakeup for example: configfs-gadget.g1 gadget.0: ECM Suspend configfs-gadget.g1 gadget.0: Port suspended. Triggering wakeup ... Unable to handle kernel NULL pointer dereference at virtual address 00000000 when execute ... PC is at 0x0 LR is at musb_gadget_wakeup+0x1d4/0x254 [musb_hdrc] ... musb_gadget_wakeup [musb_hdrc] from usb_gadget_wakeup+0x1c/0x3c [udc_core] usb_gadget_wakeup [udc_core] from eth_start_xmit+0x3b0/0x3d4 [u_ether] eth_start_xmit [u_ether] from dev_hard_start_xmit+0x94/0x24c dev_hard_start_xmit from sch_direct_xmit+0x104/0x2e4 sch_direct_xmit from __dev_queue_xmit+0x334/0xd88 __dev_queue_xmit from arp_solicit+0xf0/0x268 arp_solicit from neigh_probe+0x54/0x7c neigh_probe from __neigh_event_send+0x22c/0x47c __neigh_event_send from neigh_resolve_output+0x14c/0x1c0 neigh_resolve_output from ip_finish_output2+0x1c8/0x628 ip_finish_output2 from ip_send_skb+0x40/0xd8 ip_send_skb from udp_send_skb+0x124/0x340 udp_send_skb from udp_sendmsg+0x780/0x984 udp_sendmsg from __sys_sendto+0xd8/0x158 __sys_sendto from ret_fast_syscall+0x0/0x58 Let's fix the issue by checking for send_srp() and set_vbus() before calling them. For USB peripheral only cases these both could be NULL.

UnknownCVSS not scoredNot KEV-listedUpdatedMay 11, 2026, 20:00 UTC (UTC+00:00)

Security readout for executives and security teams

Plain-English summary

This is a Linux kernel crash bug in TI OMAP USB2 PHY handling. On systems using this USB gadget/PHY path, a wakeup request can call a missing hardware callback and dereference NULL, potentially causing a kernel panic or device denial of service. The sources do not show active exploitation or a remote, general-purpose attack path.

Executive priority

Treat as targeted operational stability risk for embedded Linux fleets. Patch during the next maintenance window for affected hardware; escalate sooner where USB gadget crashes could disrupt safety, service availability, or managed appliance uptime.

Technical view

CVE-2024-26600 fixes unchecked phy operations in phy-omap-usb2. If an external PHY lacks send_srp() or set_vbus(), the MUSB gadget wakeup path can call a NULL function pointer during USB peripheral or Ethernet gadget activity. Kernel stable commits add callback existence checks before invocation.

Likely exposure

Exposure appears limited to Linux systems using TI OMAP USB2 PHY/MUSB gadget configurations, especially embedded or appliance devices with USB peripheral or Ethernet gadget functions. General Linux servers without this hardware and driver path are unlikely to be exposed.

Exploitation context

The source describes a crash during an idle Ethernet gadget wakeup path. KEV is false, and the provided sources do not report active exploitation. Evidence supports denial-of-service risk on specific local hardware/software configurations, not broad remote compromise.

Researcher notes

The record lacks CVSS, CWE, and detailed downstream version ranges. The bug is an unchecked callback in a hardware-specific kernel path. Avoid assuming exploitability beyond kernel crash unless additional vendor analysis demonstrates privilege or remote impact.

Mitigation direction

Update to a kernel containing the referenced stable fixes for CVE-2024-26600.
Check vendor or distribution advisories for fixed kernel packages for embedded devices.
Prioritize affected TI OMAP USB gadget deployments over generic Linux hosts.
If updates are delayed, review whether the vulnerable USB gadget function is required.
Track Debian LTS advisories if using Debian-derived kernels.

Validation and detection

Inventory devices using TI OMAP USB2 PHY, MUSB, or USB gadget Ethernet configurations.
Compare running kernel versions against vendor fixed packages and referenced stable commits.
Review kernel logs for NULL pointer dereference crashes in musb_gadget_wakeup or usb_gadget_wakeup.
Confirm distro advisories mark CVE-2024-26600 fixed for deployed kernel packages.
Validate remediation with regression testing of USB peripheral wakeup behavior.

Prepared: Jun 1, 2026, 16:26 UTC (UTC+00:00)
Confidence: medium
Sources: 12

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Feb 24, 2024, 14:56 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

3Timeline events

2ADP providers

11Source links

SSVC decision data

Timestamp: Jun 28, 2024, 17:03 UTC (UTC+00:00)
Version: 2.0.3

Exploitation: noneAutomatable: noTechnical Impact: partial

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
Feb 19, 2024, 14:20 UTC (UTC+00:00)
CVE publishedCVE Program
The CVE record was published.
Feb 24, 2024, 14:56 UTC (UTC+00:00)
CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
May 11, 2026, 20:00 UTC (UTC+00:00)

ADP provider summaries

other:ssvc

Source materials

CVE List V5 sourceCVE List V5
https://git.kernel.org/stable/c/486218c11e8d1c8f515a3bdd70d62203609d4b6bCVE reference, Linux
https://git.kernel.org/stable/c/8398d8d735ee93a04fb9e9f490e8cacd737e3bf5CVE reference, Linux
https://git.kernel.org/stable/c/be3b82e4871ba00e9b5d0ede92d396d579d7b3b3CVE reference, Linux
https://git.kernel.org/stable/c/8cc889b9dea0579726be9520fcc766077890b462CVE reference, Linux
https://git.kernel.org/stable/c/0430bfcd46657d9116a26cd377f112cbc40826a4CVE reference, Linux
https://git.kernel.org/stable/c/14ef61594a5a286ae0d493b8acbf9eac46fd04c4CVE reference, Linux
https://git.kernel.org/stable/c/396e17af6761b3cc9e6e4ca94b4de7f642bfece1CVE reference, Linux
https://git.kernel.org/stable/c/7104ba0f1958adb250319e68a15eff89ec4fd36dCVE reference, Linux
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlCVE reference, CVE · x_transferred
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlCVE reference, CVE · x_transferred

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

LinuxLinux657b306a7bdfca4ae1514b533a0e7c3c6d26dbc6, 657b306a7bdfca4ae1514b533a0e7c3c6d26dbc6, 657b306a7bdfca4ae1514b533a0e7c3c6d26dbc6, 657b306a7bdfca4ae1514b533a0e7c3c6d26dbc6, 657b306a7bdfca4ae1514b533a0e7c3c6d26dbc6, 657b306a7bdfca4ae1514b533a0e7c3c6d26dbc6, 657b306a7bdfca4ae1514b533a0e7c3c6d26dbc6, 657b306a7bdfca4ae1514b533a0e7c3c6d26dbc6unaffected

LinuxLinux3.7, 0, 4.19.307, 5.4.269, 5.10.210, 5.15.149, 6.1.78, 6.6.17, 6.7.5, 6.8affected

Weakness

CWE details

No CWE listed

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