NULL Pointer Dereference Affecting kernel-macros package, versions <5.14.21-150400.24.158.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.05% (19th percentile)

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  • Snyk IDSNYK-SLES154-KERNELMACROS-9530028
  • published27 Mar 2025
  • disclosed26 Mar 2025

Introduced: 26 Mar 2025

NewCVE-2022-49221  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade SLES:15.4 kernel-macros to version 5.14.21-150400.24.158.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-macros package and not the kernel-macros package as distributed by SLES. See How to fix? for SLES:15.4 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

drm/msm/dp: populate connector of struct dp_panel

DP CTS test case 4.2.2.6 has valid edid with bad checksum on purpose and expect DP source return correct checksum. During drm edid read, correct edid checksum is calculated and stored at connector::real_edid_checksum.

The problem is struct dp_panel::connector never be assigned, instead the connector is stored in struct msm_dp::connector. When we run compliance testing test case 4.2.2.6 dp_panel_handle_sink_request() won't have a valid edid set in struct dp_panel::edid so we'll try to use the connectors real_edid_checksum and hit a NULL pointer dereference error because the connector pointer is never assigned.

Changes in V2: -- populate panel connector at msm_dp_modeset_init() instead of at dp_panel_read_sink_caps()

Changes in V3: -- remove unhelpful kernel crash trace commit text -- remove renaming dp_display parameter to dp

Changes in V4: -- add more details to commit text

Changes in v10: -- group into one series

Changes in v11: -- drop drm/msm/dp: dp_link_parse_sink_count() return immediately if aux read

Signee-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>

CVSS Base Scores

version 3.1