CVE-2024-26749

Summary

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

usb: cdns3: fixed memory use after free at cdns3_gadget_ep_disable()

… cdns3_gadget_ep_free_request(&priv_ep->endpoint, &priv_req->request); list_del_init(&priv_req->list); …

'priv_req' actually free at cdns3_gadget_ep_free_request(). But list_del_init() use priv_req->list after it.

[ 1542.642868][ T534] BUG: KFENCE: use-after-free read in __list_del_entry_valid+0x10/0xd4 [ 1542.642868][ T534] [ 1542.653162][ T534] Use-after-free read at 0x000000009ed0ba99 (in kfence-#3): [ 1542.660311][ T534] __list_del_entry_valid+0x10/0xd4 [ 1542.665375][ T534] cdns3_gadget_ep_disable+0x1f8/0x388 [cdns3] [ 1542.671571][ T534] usb_ep_disable+0x44/0xe4 [ 1542.675948][ T534] ffs_func_eps_disable+0x64/0xc8 [ 1542.680839][ T534] ffs_func_set_alt+0x74/0x368 [ 1542.685478][ T534] ffs_func_disable+0x18/0x28

Move list_del_init() before cdns3_gadget_ep_free_request() to resolve this problem.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux7733f6c32e36ff9d7adadf40001039bf219b1cbe < cfa9abb5570c489dabf6f7fb3a066cc576fc8824affected
LinuxLinux7733f6c32e36ff9d7adadf40001039bf219b1cbe < b40328eea93c75a5645891408010141a0159f643affected
LinuxLinux7733f6c32e36ff9d7adadf40001039bf219b1cbe < 4e5c73b15d95452c1ba9c771dd013a3fbe052ff3affected
LinuxLinux7733f6c32e36ff9d7adadf40001039bf219b1cbe < 2134e9906e17b1e5284300fab547869ebacfd7d9affected
LinuxLinux7733f6c32e36ff9d7adadf40001039bf219b1cbe < 29e42e1578a10c611b3f1a38f3229b2d664b5d16affected
LinuxLinux7733f6c32e36ff9d7adadf40001039bf219b1cbe < 9a07244f614bc417de527b799da779dcae780b5daffected
LinuxLinux7733f6c32e36ff9d7adadf40001039bf219b1cbe < cd45f99034b0c8c9cb346dd0d6407a95ca3d36f6affected
LinuxLinux5.4affected
LinuxLinux0 < 5.4unaffected
LinuxLinux5.4.270 <= 5.4.*unaffected
LinuxLinux5.10.211 <= 5.10.*unaffected
LinuxLinux5.15.150 <= 5.15.*unaffected
LinuxLinux6.1.80 <= 6.1.*unaffected
LinuxLinux6.6.19 <= 6.6.*unaffected
LinuxLinux6.7.7 <= 6.7.*unaffected
LinuxLinux6.8 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References