Linux Kernel up to 6.1.124/6.6.71/6.12.9/6.13-rc6 u_serial null pointer dereference

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.1.124/6.6.71/6.12.9/6.13-rc6. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the component u_serial. The manipulation results in null pointer dereference. This vulnerability was named CVE-2024-57915. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.1.124/6.6.71/6.12.9/6.13-rc6. It has been classified as problematic. Affected is some unknown processing of the component u_serial. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: u_serial: Disable ep before setting port to null to fix the crash caused by port being null Considering that in some extreme cases, when performing the unbinding operation, gserial_disconnect has cleared gser->ioport, which triggers gadget reconfiguration, and then calls gs_read_complete, resulting in access to a null pointer. Therefore, ep is disabled before gserial_disconnect sets port to null to prevent this from happening. Call trace: gs_read_complete+0x58/0x240 usb_gadget_giveback_request+0x40/0x160 dwc3_remove_requests+0x170/0x484 dwc3_ep0_out_start+0xb0/0x1d4 __dwc3_gadget_start+0x25c/0x720 kretprobe_trampoline.cfi_jt+0x0/0x8 kretprobe_trampoline.cfi_jt+0x0/0x8 udc_bind_to_driver+0x1d8/0x300 usb_gadget_probe_driver+0xa8/0x1dc gadget_dev_desc_UDC_store+0x13c/0x188 configfs_write_iter+0x160/0x1f4 vfs_write+0x2d0/0x40c ksys_write+0x7c/0xf0 __arm64_sys_write+0x20/0x30 invoke_syscall+0x60/0x150 el0_svc_common+0x8c/0xf8 do_el0_svc+0x28/0xa0 el0_svc+0x24/0x84

The advisory is available at git.kernel.org. This vulnerability is traded as CVE-2024-57915 since 01/19/2025. The exploitability is told to be difficult. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 215144 (Debian dsa-5860 : affs-modules-6.1.0-21-4kc-malta-di - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.1.125, 6.6.72, 6.12.10 or 6.13-rc7 eliminates this vulnerability. Applying the patch 3d730e8758c75b68a0152ee1ac48a270ea6725b4/0c50f00cc29948184af05bda31392fff5821f4f3/8e122d780a0f19aefd700dbd0b0e3ed3af0ae97f/13014969cbf07f18d62ceea40bd8ca8ec9d36cec is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (215144) and CERT Bund (WID-SEC-2025-0119). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

• Debian Linux
• Amazon Linux 2
• Red Hat Enterprise Linux
• Ubuntu Linux
• SUSE Linux
• Oracle Linux
• RESF Rocky Linux
• Dell NetWorker
• Dell Avamar
• Dell PowerProtect Data Domain
• Open Source Linux Kernel
• Dell Secure Connect Gateway

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 6.1.124
• 6.6.0
• 6.6.1
• 6.6.2
• 6.6.3
• 6.6.4
• 6.6.5
• 6.6.6
• 6.6.7
• 6.6.8
• 6.6.9
• 6.6.10
• 6.6.11
• 6.6.12
• 6.6.13
• 6.6.14
• 6.6.15
• 6.6.16
• 6.6.17
• 6.6.18
• 6.6.19
• 6.6.20
• 6.6.21
• 6.6.22
• 6.6.23
• 6.6.24
• 6.6.25
• 6.6.26
• 6.6.27
• 6.6.28
• 6.6.29
• 6.6.30
• 6.6.31
• 6.6.32
• 6.6.33
• 6.6.34
• 6.6.35
• 6.6.36
• 6.6.37
• 6.6.38
• 6.6.39
• 6.6.40
• 6.6.41
• 6.6.42
• 6.6.43
• 6.6.44
• 6.6.45
• 6.6.46
• 6.6.47
• 6.6.48
• 6.6.49
• 6.6.50
• 6.6.51
• 6.6.52
• 6.6.53
• 6.6.54
• 6.6.55
• 6.6.56
• 6.6.57
• 6.6.58
• 6.6.59
• 6.6.60
• 6.6.61
• 6.6.62
• 6.6.63
• 6.6.64
• 6.6.65
• 6.6.66
• 6.6.67
• 6.6.68
• 6.6.69
• 6.6.70
• 6.6.71
• 6.12.0
• 6.12.1
• 6.12.2
• 6.12.3
• 6.12.4
• 6.12.5
• 6.12.6
• 6.12.7
• 6.12.8
• 6.12.9
• 6.13-rc1
• 6.13-rc2
• 6.13-rc3
• 6.13-rc4
• 6.13-rc5
• 6.13-rc6

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion