5.5

CVE-2023-53529

wifi: rtw88: Fix memory leak in rtw88_usb

In the Linux kernel, the following vulnerability has been resolved:

wifi: rtw88: Fix memory leak in rtw88_usb

Kmemleak shows the following leak arising from routine in the usb
probe routine:

unreferenced object 0xffff895cb29bba00 (size 512):
  comm "(udev-worker)", pid 534, jiffies 4294903932 (age 102751.088s)
  hex dump (first 32 bytes):
    77 30 30 30 00 00 00 00 02 2f 2d 2b 30 00 00 00  w000...../-+0...
    02 00 2a 28 00 00 00 00 ff 55 ff ff ff 00 00 00  ..*(.....U......
  backtrace:
    [<ffffffff9265fa36>] kmalloc_trace+0x26/0x90
    [<ffffffffc17eec41>] rtw_usb_probe+0x2f1/0x680 [rtw_usb]
    [<ffffffffc03e19fd>] usb_probe_interface+0xdd/0x2e0 [usbcore]
    [<ffffffff92b4f2fe>] really_probe+0x18e/0x3d0
    [<ffffffff92b4f5b8>] __driver_probe_device+0x78/0x160
    [<ffffffff92b4f6bf>] driver_probe_device+0x1f/0x90
    [<ffffffff92b4f8df>] __driver_attach+0xbf/0x1b0
    [<ffffffff92b4d350>] bus_for_each_dev+0x70/0xc0
    [<ffffffff92b4e51e>] bus_add_driver+0x10e/0x210
    [<ffffffff92b50935>] driver_register+0x55/0xf0
    [<ffffffffc03e0708>] usb_register_driver+0x88/0x140 [usbcore]
    [<ffffffff92401153>] do_one_initcall+0x43/0x210
    [<ffffffff9254f42a>] do_init_module+0x4a/0x200
    [<ffffffff92551d1c>] __do_sys_finit_module+0xac/0x120
    [<ffffffff92ee6626>] do_syscall_64+0x56/0x80
    [<ffffffff9300006a>] entry_SYSCALL_64_after_hwframe+0x46/0xb0

The leak was verified to be real by unloading the driver, which resulted
in a dangling pointer to the allocation.

The allocated memory is freed in rtw_usb_intf_deinit().
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.2 < 6.3.4
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.12% 0.021
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-401 Missing Release of Memory after Effective Lifetime

The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

https://git.kernel.org/stable/c/59a3a312009723e3e5082899655fdcc420e2b47a
Patch
https://git.kernel.org/stable/c/5bba1ad561a8b5bb14704d8f511cf10466336e3d
Patch