CVE-2024-26749

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

HIGH

7.8

CVSS Score

Published: April 3, 2024 at 05:00 PM UTC

Updated: June 17, 2026 at 07:18 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

HIGH7.8

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

5.11 ≤ v < 5.15.1505.16 ≤ v < 6.1.805.4 ≤ v < 5.10.2115.4 ≤ v < 5.15.1505.4 ≤ v < 5.4.2705.4 ≤ v < 6.1.805.4 ≤ v < 6.6.195.4 ≤ v < 6.7.75.4 ≤ v < 6.85.5 ≤ v < 5.10.2116.2 ≤ v < 6.6.196.7 ≤ v < 6.7.76.8 rc1 6.8 rc2 6.8 rc3 6.8 rc4 6.8 rc57733f6c32e36ff9d7adadf40001039bf219b1cbe

Vendor states this is fixed in 2134e9906e17b1e5284300fab547869ebacfd7d9 (fixed)

Vendor states this is fixed in 29e42e1578a10c611b3f1a38f3229b2d664b5d16 (fixed)

Vendor states this is fixed in 4e5c73b15d95452c1ba9c771dd013a3fbe052ff3 (fixed)

Vendor states this is fixed in 9a07244f614bc417de527b799da779dcae780b5d (fixed)

Vendor states this is fixed in b40328eea93c75a5645891408010141a0159f643 (fixed)

Vendor states this is fixed in cd45f99034b0c8c9cb346dd0d6407a95ca3d36f6 (fixed)

Vendor states this is fixed in cfa9abb5570c489dabf6f7fb3a066cc576fc8824 (fixed)

Vendor states this is fixed in 5.10.211 (unaffected)

Vendor states this is fixed in 5.15.150 (unaffected)

Vendor states this is fixed in 5.4 (unaffected)

Vendor states this is fixed in 5.4.270 (unaffected)

Vendor states this is fixed in 6.1.80 (unaffected)