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CVE-2024-56670— usb: gadget: u_serial: Fix the issue that gs_start_io crashed due to accessing null pointer

EPSS 0.01% · P3

Affected Version Matrix 16

VendorProductVersion RangeStatus
LinuxLinuxc1dca562be8ada614ef193aa246c6f8705bcd6b9< 4efdfdc32d8d6307f968cd99f1db64468471bab1affected
c1dca562be8ada614ef193aa246c6f8705bcd6b9< 28b3c03a6790de1f6f2683919ad657840f0f0f58affected
c1dca562be8ada614ef193aa246c6f8705bcd6b9< 1247e1df086aa6c17ab53cd1bedce70dd7132765affected
c1dca562be8ada614ef193aa246c6f8705bcd6b9< c83213b6649d22656b3a4e92544ceeea8a2c6c07affected
c1dca562be8ada614ef193aa246c6f8705bcd6b9< 8ca07a3d18f39b1669927ef536e485787e856df6affected
c1dca562be8ada614ef193aa246c6f8705bcd6b9< dd6b0ca6025f64ccb465a6a3460c5b0307ed9c44affected
c1dca562be8ada614ef193aa246c6f8705bcd6b9< 4cfbca86f6a8b801f3254e0e3c8f2b1d2d64be2baffected
2.6.27affected
… +8 more rows
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I. Basic Information for CVE-2024-56670

Vulnerability Information
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Vulnerability Title
usb: gadget: u_serial: Fix the issue that gs_start_io crashed due to accessing null pointer
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: u_serial: Fix the issue that gs_start_io crashed due to accessing null pointer Considering that in some extreme cases, when u_serial driver is accessed by multiple threads, Thread A is executing the open operation and calling the gs_open, Thread B is executing the disconnect operation and calling the gserial_disconnect function,The port->port_usb pointer will be set to NULL. E.g. Thread A Thread B gs_open() gadget_unbind_driver() gs_start_io() composite_disconnect() gs_start_rx() gserial_disconnect() ... ... spin_unlock(&port->port_lock) status = usb_ep_queue() spin_lock(&port->port_lock) spin_lock(&port->port_lock) port->port_usb = NULL gs_free_requests(port->port_usb->in) spin_unlock(&port->port_lock) Crash This causes thread A to access a null pointer (port->port_usb is null) when calling the gs_free_requests function, causing a crash. If port_usb is NULL, the release request will be skipped as it will be done by gserial_disconnect. So add a null pointer check to gs_start_io before attempting to access the value of the pointer port->port_usb. Call trace: gs_start_io+0x164/0x25c gs_open+0x108/0x13c tty_open+0x314/0x638 chrdev_open+0x1b8/0x258 do_dentry_open+0x2c4/0x700 vfs_open+0x2c/0x3c path_openat+0xa64/0xc60 do_filp_open+0xb8/0x164 do_sys_openat2+0x84/0xf0 __arm64_sys_openat+0x70/0x9c invoke_syscall+0x58/0x114 el0_svc_common+0x80/0xe0 do_el0_svc+0x1c/0x28 el0_svc+0x38/0x68
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于usb:gadget:u_serial模块中gs_start_io崩溃由于空指针访问。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux c1dca562be8ada614ef193aa246c6f8705bcd6b9 ~ 4efdfdc32d8d6307f968cd99f1db64468471bab1 -
LinuxLinux 2.6.27 -

II. Public POCs for CVE-2024-56670

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III. Intelligence Information for CVE-2024-56670

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Patches & Fixes for CVE-2024-56670 (7)

Same Patch Batch · Linux · 2024-12-27 · 221 CVEs total

CVE-2024-56606af_packet: avoid erroring out after sock_init_data() in packet_create()
CVE-2024-56592bpf: Call free_htab_elem() after htab_unlock_bucket()
CVE-2024-56594drm/amdgpu: set the right AMDGPU sg segment limitation
CVE-2024-56595jfs: add a check to prevent array-index-out-of-bounds in dbAdjTree
CVE-2024-56596jfs: fix array-index-out-of-bounds in jfs_readdir
CVE-2024-56597jfs: fix shift-out-of-bounds in dbSplit
CVE-2024-56598jfs: array-index-out-of-bounds fix in dtReadFirst
CVE-2024-56599wifi: ath10k: avoid NULL pointer error during sdio remove
CVE-2024-56601net: inet: do not leave a dangling sk pointer in inet_create()
CVE-2024-56600net: inet6: do not leave a dangling sk pointer in inet6_create()
CVE-2024-56602net: ieee802154: do not leave a dangling sk pointer in ieee802154_create()
CVE-2024-56603net: af_can: do not leave a dangling sk pointer in can_create()
CVE-2024-56604Bluetooth: RFCOMM: avoid leaving dangling sk pointer in rfcomm_sock_alloc()
CVE-2024-56605Bluetooth: L2CAP: do not leave dangling sk pointer on error in l2cap_sock_create()
CVE-2024-56617cacheinfo: Allocate memory during CPU hotplug if not done from the primary CPU
CVE-2024-56614xsk: fix OOB map writes when deleting elements
CVE-2024-56615bpf: fix OOB devmap writes when deleting elements
CVE-2024-56616drm/dp_mst: Fix MST sideband message body length check
CVE-2024-56613sched/numa: fix memory leak due to the overwritten vma->numab_state
CVE-2024-56618pmdomain: imx: gpcv2: Adjust delay after power up handshake

Showing top 20 of 221 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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