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CVE-2024-57913

usb: gadget: f_fs: Remove WARN_ON in functionfs_bind

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.4.290, 5.10.234, 5.15.177, 6.1.125, 6.6.72, and 1 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_fs: Remove WARN_ON in functionfs_bind This commit addresses an issue related to below kernel panic where panic_on_warn is enabled. It is caused by the unnecessary use of WARN_ON in functionsfs_bind, which easily leads to the following scenarios. 1.adb_write in adbd 2. UDC write via configfs ================= ===================== ->usb_ffs_open_thread() ->UDC write ->open_functionfs() ->configfs_write_iter() ->adb_open() ->gadget_dev_desc_UDC_store() ->adb_write() ->usb_gadget_register_driver_owner ->driver_register() ->StartMonitor() ->bus_add_driver() ->adb_read() ->gadget_bind_driver() <times-out without BIND event> ->configfs_composite_bind() ->usb_add_function() ->open_functionfs() ->ffs_func_bind() ->adb_open() ->functionfs_bind() <ffs->state !=FFS_ACTIVE> The adb_open, adb_read, and adb_write operations are invoked from the daemon, but trying to bind the function is a process that is invoked by UDC write through configfs, which opens up the possibility of a race condition between the two paths. In this race scenario, the kernel panic occurs due to the WARN_ON from functionfs_bind when panic_on_warn is enabled. This commit fixes the kernel panic by removing the unnecessary WARN_ON. Kernel panic - not syncing: kernel: panic_on_warn set ... [ 14.542395] Call trace: [ 14.542464] ffs_func_bind+0x1c8/0x14a8 [ 14.542468] usb_add_function+0xcc/0x1f0 [ 14.542473] configfs_composite_bind+0x468/0x588 [ 14.542478] gadget_bind_driver+0x108/0x27c [ 14.542483] really_probe+0x190/0x374 [ 14.542488] __driver_probe_device+0xa0/0x12c [ 14.542492] driver_probe_device+0x3c/0x220 [ 14.542498] __driver_attach+0x11c/0x1fc [ 14.542502] bus_for_each_dev+0x104/0x160 [ 14.542506] driver_attach+0x24/0x34 [ 14.542510] bus_add_driver+0x154/0x270 [ 14.542514] driver_register+0x68/0x104 [ 14.542518] usb_gadget_register_driver_owner+0x48/0xf4 [ 14.542523] gadget_dev_desc_UDC_store+0xf8/0x144 [ 14.542526] configfs_write_iter+0xf0/0x138

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • Linux Linux

    From ddf8abd2599491cbad959c700b90ba72a5dce8d0 · fixed in bfe60030fcd976e3546e1f73d6d0eb3fea26442e; From ddf8abd2599491cbad959c700b90ba72a5dce8d0 · fixed in 3e4d32cc145955d5c56c5498a3ff057e4aafa9d1; From ddf8abd2599491cbad959c700b90ba72a5dce8d0 · fixed in 19fc1c83454ca9d5699e39633ec79ce26355251c; From ddf8abd2599491cbad959c700b90ba72a5dce8d0 · fixed in 82f60f3600aecd9ffcd0fbc4e193694511c85b47; From ddf8abd2599491cbad959c700b90ba72a5dce8d0 · fixed in ea6a1498742430eb2effce0d1439ff29ef37dd7d; From ddf8abd2599491cbad959c700b90ba72a5dce8d0 · fixed in a8b6a18b9b66cc4c016d63132b59ce5383f7cdd2; From ddf8abd2599491cbad959c700b90ba72a5dce8d0 · fixed in dfc51e48bca475bbee984e90f33fdc537ce09699

  • Linux Linux

    2.6.35

  • KernelLinux

    From 2.6.35 · fixed in 5.4.290; From 5.5.0 · fixed in 5.10.234; From 5.11.0 · fixed in 5.15.177; From 5.16.0 · fixed in 6.1.125; From 6.2.0 · fixed in 6.6.72; From 6.7.0 · fixed in 6.12.10

References 7

git.kernel.org