CVE-2024-36896

USB: core: Fix access violation during port device removal

CRITICAL 9.1

At a glance

Source
NVD
EPSS
EPSS 0.92 % · percentile 60 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Analyzed

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.

Weaknesses (CWE)

  • CWE-476 — NULL Pointer Dereference

References

Scores

VersionScoreVectorScored by
CVSS 3.1CRITICAL 9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:HCISA-ADP
CVSS 3.1CRITICAL 9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:HNVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected f061f43d7418cb62b8d073e221ec75d3f5b89e17 < 5f1d68ef5ddac27c6b997adccd1c339cef1e6848 ; affected f061f43d7418cb62b8d073e221ec75d3f5b89e17 < 63533549ff53d24daf47c443dbd43c308afc3434 ; affected f061f43d7418cb62b8d073e221ec75d3f5b89e17 < 6119ef6517ce501fc548154691abdaf1f954a277 ; affected f061f43d7418cb62b8d073e221ec75d3f5b89e17 < a4b46d450c49f32e9d4247b421e58083fde304ce
Linux · Linuxaffected 6.0 ; unaffected 0 < 6.0 ; unaffected 6.1.91 ≤ 6.1.* ; unaffected 6.6.31 ≤ 6.6.* ; unaffected 6.8.10 ≤ 6.8.* ; unaffected 6.9 ≤ *

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD