xhci: Fix null pointer dereference when host dies (Linux Linux)

CVE-2023-52898
MEDIUM 4.7

At a glance

Source
NVD
EPSS
EPSS 0.24 % · percentile 15 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: xhci: Fix null pointer dereference when host dies Make sure xhci_free_dev() and xhci_kill_endpoint_urbs() do not race and cause null pointer dereference when host suddenly dies. Usb core may call xhci_free_dev() which frees the xhci->devs[slot_id] virt device at the same time that xhci_kill_endpoint_urbs() tries to loop through all the device's endpoints, checking if there are any cancelled urbs left to give back. hold the xhci spinlock while freeing the virt device

Weaknesses (CWE)

  • CWE-476 — NULL Pointer Dereference

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 11ec7588a10d4bc2e1e385ac565d2166d375fba1 < 6fac4b5cecb3928a0a81069aaa815a2edc8dd5a1 ; affected 11ec7588a10d4bc2e1e385ac565d2166d375fba1 < 133b902378e4acbd824c29dd0d48570ad596e368 ; affected 11ec7588a10d4bc2e1e385ac565d2166d375fba1 < 081105213ff6f661c114781d469233c7d0e09c2e ; affected 11ec7588a10d4bc2e1e385ac565d2166d375fba1 < c462ac871f49753eca86bb960f573b993976a5ea ; affected 11ec7588a10d4bc2e1e385ac565d2166d375fba1 < ea2ee5e9991caf74e0604f994c1831a5867055b2 ; affected 11ec7588a10d4bc2e1e385ac565d2166d375fba1 < a2bc47c43e70cf904b1af49f76d572326c08bca7
Linux · Linuxaffected 4.15 ; unaffected 0 < 4.15 ; unaffected 4.19.271 ≤ 4.19.* ; unaffected 5.4.230 ≤ 5.4.* ; unaffected 5.10.165 ≤ 5.10.* ; unaffected 5.15.90 ≤ 5.15.*

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