drm/panfrost: Fix GEM handle creation ref-counting (Linux Linux)

CVE-2022-50417
HIGH 7.8

At a glance

Source
NVD
EPSS
EPSS 0.16 % · percentile 5 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: drm/panfrost: Fix GEM handle creation ref-counting panfrost_gem_create_with_handle() previously returned a BO but with the only reference being from the handle, which user space could in theory guess and release, causing a use-after-free. Additionally if the call to panfrost_gem_mapping_get() in panfrost_ioctl_create_bo() failed then a(nother) reference on the BO was dropped. The _create_with_handle() is a problematic pattern, so ditch it and instead create the handle in panfrost_ioctl_create_bo(). If the call to panfrost_gem_mapping_get() fails then this means that user space has indeed gone behind our back and freed the handle. In which case just return an error code.

Weaknesses (CWE)

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCISA-ADP
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · nvd@nist.gov (Primary)
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected f3ba91228e8e917e5bd6c4b72bfe846933d17370 < 0b70f6ea4d4f2b4d4b291d86ab76b4d07394932c ; affected f3ba91228e8e917e5bd6c4b72bfe846933d17370 < 4f1105ee72d8c7c35d90e3491b31b2d9d6b7e33a ; affected f3ba91228e8e917e5bd6c4b72bfe846933d17370 < 3f9feffa8a5ab08b4e298a27b1aa7204a7d42ca2 ; affected f3ba91228e8e917e5bd6c4b72bfe846933d17370 < ba3d2c2380e7129b525a787489c0b7e819a3b898 ; affected f3ba91228e8e917e5bd6c4b72bfe846933d17370 < 4217c6ac817451d5116687f3cc6286220dc43d49
Linux · Linuxaffected 5.2 ; unaffected 0 < 5.2 ; unaffected 5.10.163 ≤ 5.10.* ; unaffected 5.15.87 ≤ 5.15.* ; unaffected 6.0.19 ≤ 6.0.* ; unaffected 6.1.5 ≤ 6.1.*

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