CVE-2023-54131
In the Linux kernel, the following vulnerability has been resolved: wifi: rt2x00: Fix memory leak when handling surveys When removing a rt2x00 device, its associated channel surveys are not freed, causing a memory leak observable with kmemleak: unreferenced object 0xffff9620f0881a00 (size 512): comm "systemd-udevd", pid 2290, jiffies 4294906974 (age 33.768s) hex dump (first 32 bytes): 70 44 12 00 00 00 00 00 92 8a 00 00 00 00 00 00 pD.............. 00 00 00 00 00 00 00 00 ab 87 01 00 00 00 00 00 ................ backtrace: [<ffffffffb0ed858b>] __kmalloc+0x4b/0x130 [<ffffffffc1b0f29b>] rt2800_probe_hw+0xc2b/0x1380 [rt2800lib] [<ffffffffc1a9496e>] rt2800usb_probe_hw+0xe/0x60 [rt2800usb] [<ffffffffc1ae491a>] rt2x00lib_probe_dev+0x21a/0x7d0 [rt2x00lib] [<ffffffffc1b3b83e>] rt2x00usb_probe+0x1be/0x980 [rt2x00usb] [<ffffffffc05981e2>] usb_probe_interface+0xe2/0x310 [usbcore] [<ffffffffb13be2d5>] really_probe+0x1a5/0x410 [<ffffffffb13be5c8>] __driver_probe_device+0x78/0x180 [<ffffffffb13be6fe>] driver_probe_device+0x1e/0x90 [<ffffffffb13be972>] __driver_attach+0xd2/0x1c0 [<ffffffffb13bbc57>] bus_for_each_dev+0x77/0xd0 [<ffffffffb13bd2a2>] bus_add_driver+0x112/0x210 [<ffffffffb13bfc6c>] driver_register+0x5c/0x120 [<ffffffffc0596ae8>] usb_register_driver+0x88/0x150 [usbcore] [<ffffffffb0c011c4>] do_one_initcall+0x44/0x220 [<ffffffffb0d6134c>] do_init_module+0x4c/0x220 Fix this by freeing the channel surveys on device removal. Tested with a RT3070 based USB wireless adapter.
Affected versions
Linux kernel versions
5.11
and later are affected. Fixed in
5.15.111,
6.1.28,
6.2.15,
6.3.2,
6.4
and their respective stable series.
References
The following references provide additional information about CVE-2023-54131 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/0354bce76ed1d775904acdb4cc0bf88c5b9b5b9f
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PatchKernel patch commithttps://git.kernel.org/stable/c/494064ffd60d044c097d514917c40913d1affbca
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PatchKernel patch commithttps://git.kernel.org/stable/c/bea3f8aa999318bdffa2d17753e492f76904f0ce
Frequently asked questions
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What is CVE-2023-54131?
CVE-2023-54131 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.11 onward and has been patched in 5.15.111, 6.1.28, 6.2.15 and others. CVE-2023-54131 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2023-54131?
Yes — CVE-2023-54131 has been patched. Fixed versions include 5.15.111, 6.1.28, 6.2.15 and others. If you are running Linux kernel 5.11 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2023-54131 actively exploited?
No — CVE-2023-54131 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.