Skip to main content

Boteraser | Website and Server Security Solutions

🛡️ CVE-2024-50177 — kernel

🟡 CVSS 5.5 — Medium ✅ No Known Exploit NVD
5.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

drm/amd/display: fix a UBSAN warning in DML2.1

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

drm/amd/display: fix a UBSAN warning in DML2.1

When programming phantom pipe, since cursor_width is explicity set to 0,

this causes calculation logic to trigger overflow for an unsigned int

triggering the kernel's UBSAN check as below:

[ 40.962845] UBSAN: shift-out-of-bounds in /tmp/amd.EfpumTkO/amd/amdgpu/../display/dc/dml2/dml21/src/dml2_core/dml2_core_dcn4_calcs.c:3312:34

[ 40.962849] shift exponent 4294967170 is too large for 32-bit type 'unsigned int'

[ 40.962852] CPU: 1 PID: 1670 Comm: gnome-shell Tainted: G W OE 6.5.0-41-generic #41~22.04.2-Ubuntu

[ 40.962854] Hardware name: Gigabyte Technology Co., Ltd. X670E AORUS PRO X/X670E AORUS PRO X, BIOS F21 01/10/2024

[ 40.962856] Call Trace:

[ 40.962857] <TASK>

[ 40.962860] dump_stack_lvl+0x48/0x70

[ 40.962870] dump_stack+0x10/0x20

[ 40.962872] __ubsan_handle_shift_out_of_bounds+0x1ac/0x360

[ 40.962878] calculate_cursor_req_attributes.cold+0x1b/0x28 [amdgpu]

[ 40.963099] dml_core_mode_support+0x6b91/0x16bc0 [amdgpu]

[ 40.963327] ? srso_alias_return_thunk+0x5/0x7f

[ 40.963331] ? CalculateWatermarksMALLUseAndDRAMSpeedChangeSupport+0x18b8/0x2790 [amdgpu]

[ 40.963534] ? srso_alias_return_thunk+0x5/0x7f

[ 40.963536] ? dml_core_mode_support+0xb3db/0x16bc0 [amdgpu]

[ 40.963730] dml2_core_calcs_mode_support_ex+0x2c/0x90 [amdgpu]

[ 40.963906] ? srso_alias_return_thunk+0x5/0x7f

[ 40.963909] ? dml2_core_calcs_mode_support_ex+0x2c/0x90 [amdgpu]

[ 40.964078] core_dcn4_mode_support+0x72/0xbf0 [amdgpu]

[ 40.964247] dml2_top_optimization_perform_optimization_phase+0x1d3/0x2a0 [amdgpu]

[ 40.964420] dml2_build_mode_programming+0x23d/0x750 [amdgpu]

[ 40.964587] dml21_validate+0x274/0x770 [amdgpu]

[ 40.964761] ? srso_alias_return_thunk+0x5/0x7f

[ 40.964763] ? resource_append_dpp_pipes_for_plane_composition+0x27c/0x3b0 [amdgpu]

[ 40.964942] dml2_validate+0x504/0x750 [amdgpu]

[ 40.965117] ? dml21_copy+0x95/0xb0 [amdgpu]

[ 40.965291] ? srso_alias_return_thunk+0x5/0x7f

[ 40.965295] dcn401_validate_bandwidth+0x4e/0x70 [amdgpu]

[ 40.965491] update_planes_and_stream_state+0x38d/0x5c0 [amdgpu]

[ 40.965672] update_planes_and_stream_v3+0x52/0x1e0 [amdgpu]

[ 40.965845] ? srso_alias_return_thunk+0x5/0x7f

[ 40.965849] dc_update_planes_and_stream+0x71/0xb0 [amdgpu]

Fix this by adding a guard for checking cursor width before triggering

the size calculation.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

  • Attack vector: Local — a local account, shell or session on the host is needed.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: Low — an ordinary user account is enough.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: None.
  • Integrity impact: None.
  • Availability impact: High — total loss, or loss the attacker controls.

Affected software

CVE-2024-50177 is recorded against 2 packages.

  • kernel (from 6.11.0 up to 6.11.3)
  • linux-kernel (fixed in 6.11.3)

Timeline and source

Published on 8 November 2024 and last revised on 12 August 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

Other advisories for this package

kernel has other advisories on record. If you are patching this one, these are worth checking on the same host:

CVE-2024-50177 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Medium
CVSS Score 5.5
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2024-11-08
Updated 2026-08-20
Modified 2026-08-12

Affected Packages

Software From version Fixed in
kernel 6.11.0 6.11.3
linux-kernel — 6.11.3

Similar Threats

Vulnerability Monitoring

Track new vulnerabilities in kernel

CVE-2024-50177 is rated CVSS 5.5 Medium. BotEraser monitors your WordPress installation and notifies you when software you use appears in our vulnerability database.

Set Up Free Alerts →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

Browse related advisories

All advisoriesCVECVE 2024
✓