drm/amd/display: Fix a NULL pointer dereference in amdgpu_dm_connector_add_common_modes() (Linux Linux)

CVE-2022-49232
MEDIUM 5.5

At a glance

Source
NVD
EPSS
EPSS 0.27 % · percentile 19 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix a NULL pointer dereference in amdgpu_dm_connector_add_common_modes() In amdgpu_dm_connector_add_common_modes(), amdgpu_dm_create_common_mode() is assigned to mode and is passed to drm_mode_probed_add() directly after that. drm_mode_probed_add() passes &mode->head to list_add_tail(), and there is a dereference of it in list_add_tail() without recoveries, which could lead to NULL pointer dereference on failure of amdgpu_dm_create_common_mode(). Fix this by adding a NULL check of mode. This bug was found by a static analyzer. Builds with 'make allyesconfig' show no new warnings, and our static analyzer no longer warns about this code.

Weaknesses (CWE)

  • CWE-476 — NULL Pointer Dereference

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HCISA-ADP
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected e7b07ceef2a650e5ed8ca37997689e086c680daf < 2c729dec8c1e3e2892fde5ce8181553860914e74 ; affected e7b07ceef2a650e5ed8ca37997689e086c680daf < 57f4ad5e286fe4599c8fc63cf89f85f9eec7f9c9 ; affected e7b07ceef2a650e5ed8ca37997689e086c680daf < 19a7eba284790cfbba2945deb2363cf03ce41648 ; affected e7b07ceef2a650e5ed8ca37997689e086c680daf < bdc7429708a0772d90c208975694f7c2133b1202 ; affected e7b07ceef2a650e5ed8ca37997689e086c680daf < f4eaa999fec78dec2a9c2d797438e05cbffb125b ; affected e7b07ceef2a650e5ed8ca37997689e086c680daf < 639b3b9def0a6a3f316a195d705d14113236e89c
Linux · Linuxaffected 4.15 ; unaffected 0 < 4.15 ; unaffected 4.19.238 ≤ 4.19.* ; unaffected 5.4.189 ≤ 5.4.* ; unaffected 5.10.110 ≤ 5.10.* ; unaffected 5.15.33 ≤ 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