CVE-2024-36896

Description

In the Linux kernel, the following vulnerability has been resolved: USB: core: Fix access violation during port device removal Testing with KASAN and syzkaller revealed a bug in port.c:disable_store(): usb_hub_to_struct_hub() can return NULL if the hub that the port belongs to is concurrently removed, but the function does not check for this possibility before dereferencing the returned value. It turns out that the first dereference is unnecessary, since hub->intfdev is the parent of the port device, so it can be changed easily. Adding a check for hub == NULL prevents further problems. The same bug exists in the disable_show() routine, and it can be fixed the same way.

Reserved 2024-05-30 | Published 2024-05-30 | Updated 2025-05-04 | Assigner Linux

Product status

Default status
unaffected

f061f43d7418cb62b8d073e221ec75d3f5b89e17 before 5f1d68ef5ddac27c6b997adccd1c339cef1e6848
affected

f061f43d7418cb62b8d073e221ec75d3f5b89e17 before 63533549ff53d24daf47c443dbd43c308afc3434
affected

f061f43d7418cb62b8d073e221ec75d3f5b89e17 before 6119ef6517ce501fc548154691abdaf1f954a277
affected

f061f43d7418cb62b8d073e221ec75d3f5b89e17 before a4b46d450c49f32e9d4247b421e58083fde304ce
affected

Default status
affected

6.0
affected

Any version before 6.0
unaffected

6.1.91
unaffected

6.6.31
unaffected

6.8.10
unaffected

6.9
unaffected

References

git.kernel.org/...c/5f1d68ef5ddac27c6b997adccd1c339cef1e6848

git.kernel.org/...c/63533549ff53d24daf47c443dbd43c308afc3434

git.kernel.org/...c/6119ef6517ce501fc548154691abdaf1f954a277

git.kernel.org/...c/a4b46d450c49f32e9d4247b421e58083fde304ce

cve.org (CVE-2024-36896)

nvd.nist.gov (CVE-2024-36896)

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