CVE-2022-49299
"Samsung Exynos USB DWC2 Gadget Bus Null Pointer Dereference"
Description
In the Linux kernel, the following vulnerability has been resolved: usb: dwc2: gadget: don't reset gadget's driver->bus UDC driver should not touch gadget's driver internals, especially it should not reset driver->bus. This wasn't harmful so far, but since commit fc274c1e9973 ("USB: gadget: Add a new bus for gadgets") gadget subsystem got it's own bus and messing with ->bus triggers the following NULL pointer dereference: dwc2 12480000.hsotg: bound driver g_ether 8<--- cut here --- Unable to handle kernel NULL pointer dereference at virtual address 00000000 [00000000] *pgd=00000000 Internal error: Oops: 5 [#1] SMP ARM Modules linked in: ... CPU: 0 PID: 620 Comm: modprobe Not tainted 5.18.0-rc5-next-20220504 #11862 Hardware name: Samsung Exynos (Flattened Device Tree) PC is at module_add_driver+0x44/0xe8 LR is at sysfs_do_create_link_sd+0x84/0xe0 ... Process modprobe (pid: 620, stack limit = 0x(ptrval)) ... module_add_driver from bus_add_driver+0xf4/0x1e4 bus_add_driver from driver_register+0x78/0x10c driver_register from usb_gadget_register_driver_owner+0x40/0xb4 usb_gadget_register_driver_owner from do_one_initcall+0x44/0x1e0 do_one_initcall from do_init_module+0x44/0x1c8 do_init_module from load_module+0x19b8/0x1b9c load_module from sys_finit_module+0xdc/0xfc sys_finit_module from ret_fast_syscall+0x0/0x54 Exception stack(0xf1771fa8 to 0xf1771ff0) ... dwc2 12480000.hsotg: new device is high-speed ---[ end trace 0000000000000000 ]--- Fix this by removing driver->bus entry reset.
INFO
Published Date :
Feb. 26, 2025, 7:01 a.m.
Last Modified :
April 14, 2025, 7:49 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-49299.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-49299 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-49299 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Apr. 14, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-476 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.198 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.10 up to (excluding) 4.14.283 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.247 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.18 up to (excluding) 5.18.4 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 5.17.15 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.47 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 4.9.318 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.122 Added Reference Type kernel.org: https://git.kernel.org/stable/c/172cfc167c8ee6238f24f9c16efd598602af643c Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/3120aac6d0ecd9accf56894aeac0e265f74d3d5a Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/5127c0f365265bb69cd776ad6e4b872c309f3fa8 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/547ebdc200b862dff761ff4890f66d8217c33316 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/5b0c0298f7c3b57417f1729ec4071f76864b72dd Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/bee8f9808a7e82addfc73a0973b16a8bb684205b Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d2159feb9d28ce496d77df98313ab454646372ac Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d232ca0bbc7d03144bad0ffd1792c3352bfd03fa Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/efb15ff4a77fe053c941281775fefa91c87770e0 Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 26, 2025
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: usb: dwc2: gadget: don't reset gadget's driver->bus UDC driver should not touch gadget's driver internals, especially it should not reset driver->bus. This wasn't harmful so far, but since commit fc274c1e9973 ("USB: gadget: Add a new bus for gadgets") gadget subsystem got it's own bus and messing with ->bus triggers the following NULL pointer dereference: dwc2 12480000.hsotg: bound driver g_ether 8<--- cut here --- Unable to handle kernel NULL pointer dereference at virtual address 00000000 [00000000] *pgd=00000000 Internal error: Oops: 5 [#1] SMP ARM Modules linked in: ... CPU: 0 PID: 620 Comm: modprobe Not tainted 5.18.0-rc5-next-20220504 #11862 Hardware name: Samsung Exynos (Flattened Device Tree) PC is at module_add_driver+0x44/0xe8 LR is at sysfs_do_create_link_sd+0x84/0xe0 ... Process modprobe (pid: 620, stack limit = 0x(ptrval)) ... module_add_driver from bus_add_driver+0xf4/0x1e4 bus_add_driver from driver_register+0x78/0x10c driver_register from usb_gadget_register_driver_owner+0x40/0xb4 usb_gadget_register_driver_owner from do_one_initcall+0x44/0x1e0 do_one_initcall from do_init_module+0x44/0x1c8 do_init_module from load_module+0x19b8/0x1b9c load_module from sys_finit_module+0xdc/0xfc sys_finit_module from ret_fast_syscall+0x0/0x54 Exception stack(0xf1771fa8 to 0xf1771ff0) ... dwc2 12480000.hsotg: new device is high-speed ---[ end trace 0000000000000000 ]--- Fix this by removing driver->bus entry reset. Added Reference https://git.kernel.org/stable/c/172cfc167c8ee6238f24f9c16efd598602af643c Added Reference https://git.kernel.org/stable/c/3120aac6d0ecd9accf56894aeac0e265f74d3d5a Added Reference https://git.kernel.org/stable/c/5127c0f365265bb69cd776ad6e4b872c309f3fa8 Added Reference https://git.kernel.org/stable/c/547ebdc200b862dff761ff4890f66d8217c33316 Added Reference https://git.kernel.org/stable/c/5b0c0298f7c3b57417f1729ec4071f76864b72dd Added Reference https://git.kernel.org/stable/c/bee8f9808a7e82addfc73a0973b16a8bb684205b Added Reference https://git.kernel.org/stable/c/d2159feb9d28ce496d77df98313ab454646372ac Added Reference https://git.kernel.org/stable/c/d232ca0bbc7d03144bad0ffd1792c3352bfd03fa Added Reference https://git.kernel.org/stable/c/efb15ff4a77fe053c941281775fefa91c87770e0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-49299 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-49299
weaknesses.